Common Work Results for Electrical
Remake batch 26: rewritten from scratch under the authoring cheatsheet with datasheet constraints; neighbors re-pointed to the new scope boundaries; the electrical code is now the adopted-electrical-code project fact
Showing changes from Rev 4
to Rev 5
in Common Work Results for Electrical.
---
title: Common Work Results for Electrical
category: Electrical
−toc_depth: 3
description: >
− When to use: The umbrella electrical section establishing project-wide basis-of-design intent and general execution standards inherited by every subsequent electrical section. Covers code basis (NEC/NFPA 70) declared once for the project; project-wide submittals and quality assurance; wire connections and splices at 600V and below; equipment nameplates and field labeling including arc-flash labels; NEMA/UL enclosure-type selection; sleeves and rated floor/wall penetrations with firestopping; equipment supports and seismic restraint thresholds; electrical coordination drawings; cutting and patching for rough-in; and field acceptance testing (insulation resistance, continuity).
− Not intended for: Conductor sizing, insulation types, and ampacity (see [[sync/conductors-and-cables]]); conduit types, fill, and routing detail (see [[sync/raceways-and-conduit]]); grounding electrode design and bonding jumper sizing (see [[sync/grounding-and-bonding]]); receptacles, switches, and wiring devices (see [[sync/wiring-devices]]); motor terminal wiring and individual motor protection (see [[sync/electric-motors]]); wireways, auxiliary gutters, and surface raceways (see [[sync/wireways-and-auxiliary-gutters]]); plug-in busway devices (see [[sync/feeder-busway-plug-in-units]]); medium-voltage (above 600V) distribution; fire alarm systems (see [[sync/fire-alarm-systems]]) and low-voltage signal or data cabling (see [[sync/structured-cabling]]); and detailed seismic restraint calculations, which require the structural Engineer of Record per ASCE 7.
+ When to use: The umbrella standard for the electrical discipline, read together with every electrical power, lighting, communications, and electronic safety and security standard on a project. Declares the governing electrical code once; states the submittal content, installer qualification, listing and labeling, construction electrical safety, enclosure-type-by-location, trade coordination, equipment access and working space, division of responsibility for serving equipment furnished under other disciplines, sleeve and penetration, support and seismic restraint threshold, existing-building outage and cutting and patching, protection and cleaning, demonstration and training, and warranty provisions that the electrical standards inherit rather than restate. Carries no product requirements of its own.
+ Not intended for: Building wire, its splices and its terminations (see [[sync/conductors-and-cables]]) and feeder and service conductors (see [[sync/distribution-feeder-cables]]); conduit, tubing, boxes, and surface raceways (see [[sync/raceways-and-conduit]]), wireways and auxiliary gutters (see [[sync/wireways-and-auxiliary-gutters]]), cable tray (see [[sync/cable-tray]]), and duct banks (see [[sync/underground-ductbank]]); grounding and bonding (see [[sync/grounding-and-bonding]]); conductor color coding, wire markers, and raceway marking (see [[sync/electrical-identification]]) and equipment nameplates, directories, warning signs, and arc-flash labels (see [[sync/equipment-labeling]]); the short-circuit, coordination, and arc-flash studies (see [[sync/short-circuit-study]], [[sync/protective-coordination-study]], and [[sync/arc-flash-study]]); field acceptance testing (see [[sync/electrical-acceptance-testing]]); firestop systems (see [[sync/firestopping]]); vibration isolation and seismic restraint design (see [[sync/vibration-isolation-and-seismic-restraint]]); electrical room design (see [[sync/electrical-rooms]]); hazardous (classified) locations (see [[sync/electrical-hazardous-locations]]); the service entrance (see [[sync/electrical-service-entrance]]); selective electrical demolition (see [[sync/electrical-demolition-and-relocation]]); temporary construction power (see [[sync/temporary-facilities-and-controls]]); the facility electrical safety program (see [[sync/electrical-safety-program]]); the submittal workflow, operation and maintenance data, closeout, and warranty administration (see [[sync/submittal-and-quality-procedures]], [[sync/operation-and-maintenance-data]], [[sync/closeout-procedures]], and [[sync/warranties-and-bonds]]); commissioning (see [[sync/commissioning]]); and the sibling umbrellas of the other disciplines (see [[sync/common-work-results-mechanical]], [[sync/common-work-results-plumbing]], and [[sync/common-work-results-process]]).
---
# Scope {toc}
−## This specification establishes the foundational, cross-cutting electrical requirements that apply uniformly to all electrical work on a project, serving as the umbrella electrical section under which every subsequent electrical section is written. {note}
+## This standard is the umbrella for the electrical discipline. It states once the code basis and the administrative and execution provisions that every electrical standard on the project inherits, so that the equipment, wiring, lighting, communications, and electronic safety and security standards can confine themselves to their own products and procedures. {note}
−## It declares the project-wide code basis, basis-of-design electrical characteristics, general installation workmanship, and field execution standards that are too general to belong to any single equipment section, so that they are stated once and inherited rather than restated and contradicted. {note}
+## The requirements of this standard apply to every item of electrical work on the project, including communications and electronic safety and security work and work on systems above 1000 V, whether or not the standard governing that work restates them.
−## The scope encompasses general code compliance, division-wide submittals and quality assurance, wire connections and splices rated 600V and below, equipment nameplates and field labeling, NEMA and UL enclosure-type selection, sleeves and rated penetrations with firestopping, equipment supports and seismic restraint thresholds, electrical coordination drawings, cutting and patching for rough-in, and field acceptance testing. {note}
+## Where a standard governing a particular item of electrical work states a requirement on a matter this standard also addresses, the more specific standard shall govern that item unless the Engineer of Record directs otherwise in writing.
−## The basis-of-design framing is central to this section: it records what the Engineer of Record has assumed about the facility voltage system, available fault current, and environmental classifications before any equipment is purchased, so the contractor and downstream specifiers can verify their selections against a single declared baseline. {note}
+## This standard carries no product requirements. The products and procedures below are governed by their own standards, and nothing here restates them. {note}
−## This standard is prescriptive but deliberately non-duplicative: it states each governing code article once and does not restate rules that belong to other sections. Scope boundaries include: (1) ampacity tables, conduit fill, and grounding electrode design belong to [[sync/conductors-and-cables]], [[sync/raceways-and-conduit]], and [[sync/grounding-and-bonding]] respectively; (2) general termination workmanship is governed here, but motor-specific terminations, disconnects, and overload protection are governed by [[sync/electric-motors]]; (3) this standard does not cover medium-voltage equipment and conductors rated above 600V, fire alarm systems, low-voltage signal or data cabling, or detailed seismic restraint design calculations, which are the responsibility of the structural Engineer of Record. {note}
+- Building wire and cable, splices, and terminations: [[sync/conductors-and-cables]]; feeder and service conductors: [[sync/distribution-feeder-cables]]; shielded cable above 1000 V: [[sync/medium-voltage-cables]]; control and instrumentation cable: [[sync/instrumentation-and-control-cable]]
+- Conduit, tubing, boxes, fittings, surface raceways, and their supports: [[sync/raceways-and-conduit]]; wireways and auxiliary gutters: [[sync/wireways-and-auxiliary-gutters]]; cable tray: [[sync/cable-tray]]; concrete-encased duct banks: [[sync/underground-ductbank]]; busway: [[sync/busway]]
+- The grounding electrode system, bonding, and equipment grounding conductors: [[sync/grounding-and-bonding]]
+- Conductor color coding, wire markers, cable tags, raceway markers, and box cover marking: [[sync/electrical-identification]]; equipment nameplates, circuit directories, warning signs, and the arc-flash label as a product: [[sync/equipment-labeling]]
+- The short-circuit study, the protective device coordination study, and the arc-flash study: [[sync/short-circuit-study]], [[sync/protective-coordination-study]], and [[sync/arc-flash-study]]
+- The field acceptance test program, its tester, its criteria, and its report: [[sync/electrical-acceptance-testing]]
+- Through-penetration firestop systems: [[sync/firestopping]]; wall and ceiling access doors: [[sync/access-doors-and-panels]]; housekeeping pads: [[sync/concrete-pads]]; post-installed anchors: [[sync/post-installed-anchors]]
+- Seismic restraint design, bracing, anchorage design, and special seismic certification: [[sync/vibration-isolation-and-seismic-restraint]]
+- Dedicated electrical rooms, their clearances, ventilation, and egress: [[sync/electrical-rooms]]
+- The installation inside a hazardous (classified) location: [[sync/electrical-hazardous-locations]]
+- The service from the utility point of delivery through the service disconnecting means: [[sync/electrical-service-entrance]]
+- Motors: [[sync/electric-motors]]; individually enclosed starters: [[sync/combination-motor-starters]]; motor control centers: [[sync/motor-control-centers]]; variable frequency drives: [[sync/low-voltage-variable-frequency-drives]] and [[sync/hvac-variable-frequency-drives]]; enclosed switches and disconnects: [[sync/enclosed-switches-and-disconnects]]; panelboards: [[sync/panelboards]]; industrial control panels: [[sync/industrial-control-panels]]
+- Removal, abandonment, and relocation of existing electrical systems: [[sync/electrical-demolition-and-relocation]]; temporary construction power and lighting: [[sync/temporary-facilities-and-controls]]
+- The facility's written electrical safety program, its energized work permits, and its lockout and tagout procedures: [[sync/electrical-safety-program]]
+- The submittal register and review workflow: [[sync/submittal-and-quality-procedures]]; operation and maintenance manual content and format: [[sync/operation-and-maintenance-data]]; substantial completion, punch list, and final completion: [[sync/closeout-procedures]]; warranty and bond administration: [[sync/warranties-and-bonds]]; commissioning and functional performance testing: [[sync/commissioning]]
+- Mechanical, plumbing, and process common work: [[sync/common-work-results-mechanical]], [[sync/common-work-results-plumbing]], and [[sync/common-work-results-process]]
# Referenced Standards {toc}
−## Equipment, materials, and installation shall comply with the latest adopted edition of each of the following unless a specific edition is cited or the Authority Having Jurisdiction has adopted a different edition.
+## Equipment, materials, and installation shall comply with the latest adopted edition of each of the following unless a specific edition is cited.
−## Where the contract documents, the adopted building code, or a referenced standard conflict, the more stringent requirement shall govern unless the Engineer of Record directs otherwise in writing.
+## Where the Contract Documents, the adopted codes, and a referenced standard differ on the same matter, the most stringent requirement shall govern unless the Engineer of Record directs otherwise in writing.
| Standard | Title |
|----------|-------|
−| NFPA 70 (NEC) | National Electrical Code — Articles 110, 250, 300, 408 |
−| NEMA 250 | Enclosures for Electrical Equipment (1000 V Maximum) |
+| NFPA 70 | National Electrical Code (Articles 110, 300, 430, 500 through 516, and 695) |
+| NFPA 70E | Standard for Electrical Safety in the Workplace |
+| 29 CFR 1926 Subpart K | Safety and Health Regulations for Construction, Electrical |
+| NEMA 250 | Enclosures for Electrical Equipment (1000 Volts Maximum) |
| UL 50 | Enclosures for Electrical Equipment, Non-Environmental Considerations |
| UL 50E | Enclosures for Electrical Equipment, Environmental Considerations |
−| UL 508A | Industrial Control Panels |
−| NFPA 70E | Standard for Electrical Safety in the Workplace |
−| IEEE C2 (NESC) | National Electrical Safety Code |
−| IEEE 1584 | Guide for Performing Arc-Flash Hazard Calculations |
−| ASCE 7 | Minimum Design Loads and Associated Criteria for Buildings and Other Structures (Chapter 13) |
−| IBC | International Building Code (Chapter 27, Section 714) |
−| ASTM E814 | Test Method for Fire Tests of Penetration Firestop Systems |
−| ANSI/NETA ATS | Acceptance Testing Specifications for Electrical Power Equipment and Systems |
+| IBC | International Building Code (Section 714, Penetrations; Chapter 17, Special Inspections and Tests) |
+| ASCE/SEI 7 | Minimum Design Loads and Associated Criteria for Buildings and Other Structures (Chapter 13) |
−# Basis of Design {toc}
+# Governing Code and Authority {toc}
−## This section records the electrical characteristics the Engineer of Record has assumed for the facility. Every downstream electrical section, equipment submittal, and panel schedule depends on these values being declared once and held uniform; when they are omitted, each section silently assumes its own voltage and fault current and the conflicts surface only at submittal review or, worse, at energization. {note}
+## Electrical work shall comply with [[parameter: adopted-electrical-code]], including the amendments the Authority Having Jurisdiction has enacted to it.
−## Governing Code Edition {toc}
+## The fire-resistance, seismic, and structural provisions of [[parameter: adopted-building-code]] that bear on electrical penetrations, supports, and anchorage shall apply to the electrical work.
−### The electrical installation shall comply with the edition of NFPA 70 (National Electrical Code) adopted by the Authority Having Jurisdiction at the project location, together with all state and local amendments in force.
+## Where an electrical standard cites an article of NFPA 70, the citation refers to that article as it reads in the edition adopted under [[parameter: adopted-electrical-code]], and the number is given for the reader's convenience rather than as a pin to a particular edition. {note}
−```datasheet
−label: Governing NEC Edition
−type: radio
−options:
− - "NEC 2023 (NFPA 70-2023)"
− - "NEC 2020 (NFPA 70-2020)"
− - "NEC 2017 (NFPA 70-2017)"
− - "AHJ-adopted edition to be confirmed before rough-in"
−default: "NEC 2020 (NFPA 70-2020)"
−```
+## Before requesting the first rough-in inspection, the Contractor shall confirm the adopted electrical code edition and amendments with the Authority Having Jurisdiction.
−### The Contractor shall confirm the adopted NEC edition and applicable amendments with the Authority Having Jurisdiction before commencing rough-in, and shall notify the Engineer of Record in writing of any amendment that conflicts with the contract documents.
+## The Contractor shall notify the Engineer of Record in writing of any adopted amendment that conflicts with the Contract Documents within seven days of identifying it.
−### Many jurisdictions lag the published NEC by one or more cycles, so the edition assumed in design must be reconciled against the locally adopted edition rather than presumed to be the most recent publication. {note}
+## Work affected by a reported amendment conflict shall not proceed until the Engineer of Record has responded in writing.
−## Voltage System {toc}
+## Unless the Contract Documents assign the duty to another party, the Contractor shall obtain the electrical permits, pay the associated fees, and arrange every inspection the Authority Having Jurisdiction requires.
−### The basis-of-design utilization voltage system shall be declared here and shall govern all downstream sections including luminaires, motor feeders, and panel schedules.
+## The Contractor shall deliver the signed inspection records and the final electrical approval to the Owner with the closeout submittals.
−```datasheet
−label: Building Distribution Voltage System
−type: radio
−options:
− - "480Y/277V, 3Φ, 4-wire, 60 Hz"
− - "208Y/120V, 3Φ, 4-wire, 60 Hz"
− - "480V, 3Φ, 3-wire delta, 60 Hz"
− - "240/120V, 1Φ, 3-wire, 60 Hz"
−default: "480Y/277V, 3Φ, 4-wire, 60 Hz"
−```
+## Many jurisdictions adopt NFPA 70 one or two cycles behind the current publication, several enforce a state electrical code built on it, and nearly all enact amendments. The electrical code is a fact about the project, answered once, and every electrical standard reads the same answer; the design was prepared against that edition, and a newer edition is not a substitute for it. {note}
−### The default building distribution shall be 480Y/277V, 3Φ, 4-wire, 60 Hz, with 208Y/120V derived through transformers for receptacle and small-equipment loads, unless the drawings indicate otherwise.
+# Submittals {toc}
−### Declaring the voltage system once prevents the common coordination failure in which downstream sections each assume a different voltage and the discrepancy is not caught until equipment submittals arrive. {note}
+## Submittal Procedures {toc}
−## Available Fault Current {toc}
+### Each submittal made under an electrical standard shall identify the equipment tag or system it covers, the governing standard, and the datasheet values of that standard on which the selection depends.
−### The available short-circuit fault current at the service entrance shall be obtained from the serving utility in writing and recorded in the basis of design before any overcurrent device or listed assembly is procured.
+### Product data shall be marked to show the model, ratings, options, and accessories proposed, with inapplicable options struck through.
−### All overcurrent protective devices shall have an interrupting rating equal to or greater than the available fault current at their point of application per NEC 110.9.
+### Where a submittal proposes a departure from the Contract Documents, the departure shall be identified in the transmittal, and a submittal that is silent on a departure shall not be construed as having disclosed it.
−### Listed equipment and assemblies shall have a short-circuit current rating (SCCR) equal to or greater than the available fault current at the point of installation per NEC 110.10.
+### Delegated-design submittals shall bear the seal of a professional engineer licensed in the project jurisdiction.
−### The available fault current changes when the utility transformer or service conductors change; the value used in the arc-flash and equipment-rating basis shall be the utility-confirmed value, not an assumed maximum.
+### The submittal register, the review timeline, and the action classification of each submittal shall follow [[sync/submittal-and-quality-procedures]].
−```datasheet
−label: Available Fault Current at Service Entrance
−type: range
−unit: kA
−min: 10
−max: 100
−step: 0.1
−```
+## Action Submittals {toc}
−## Conductor Color Coding {toc}
+### The Contractor shall submit the following for review before the related work is fabricated or installed:
−### A single project-wide conductor color-coding convention shall be established here and applied uniformly across every electrical section.
+- Electrical coordination drawings for each area in which they are required under the Trade Coordination section of this standard
+- Sleeve and penetration layout drawings locating every sleeve, block-out, slab stub-up, and roof or exterior wall penetration for electrical work, with the sleeve size and the listed firestop system at each rated assembly
+- Access door location schedule identifying each concealed junction box, pull box, or device that requires service and the access provided to it
+- Delegated-design submittals, including seismic restraint and anchorage design, where the Contract Documents delegate design
+- Outage plan for work in an existing building, listing each planned outage, the systems and areas affected, and its proposed date and duration
```datasheet
−label: Phase Conductor Identification Method
−type: radio
+label: Required Action Submittals
+type: checkbox
options:
− - "Factory-colored insulation full length"
− - "Colored insulation or colored tape at terminations and accessible points (No. 4 AWG and larger)"
−default: "Colored insulation or colored tape at terminations and accessible points (No. 4 AWG and larger)"
+ - "Electrical coordination drawings"
+ - "Sleeve and penetration layout drawings"
+ - "Access door location schedule"
+ - "Delegated-design submittals"
+ - "Outage plan"
+default:
+ - "Electrical coordination drawings"
+ - "Sleeve and penetration layout drawings"
+ - "Access door location schedule"
+ - "Delegated-design submittals"
+constraint: all_of
```
−### Where 480V and 208V systems coexist in the same facility, the two systems shall use distinct phase color sets so that a 480V phase conductor can never be mistaken for a 208V phase conductor.
+## Informational Submittals {toc}
−```datasheet
−label: 208Y/120V System Phase Colors (A / B / C / Neutral)
−type: radio
−options:
− - "Black / Red / Blue / White"
− - "Brown / Orange / Yellow / Gray (where reserved for 208V)"
−default: "Black / Red / Blue / White"
−```
+### The Contractor shall submit the following for the record:
−```datasheet
−label: 480Y/277V System Phase Colors (A / B / C / Neutral)
−type: radio
−options:
− - "Brown / Orange / Yellow / Gray"
− - "Brown / Purple / Yellow / Gray"
−default: "Brown / Orange / Yellow / Gray"
−```
+- Written confirmation of the adopted electrical code edition and amendments obtained from the Authority Having Jurisdiction
+- Copies of electrical permits and signed inspection records as they are issued
+- Outage requests and the outage log where work is performed in an existing building
+- Installer qualification statement naming the licensed electrical contractor and the supervising electricians
−### When both systems use the same color on Phase A, field cross-connection errors become common and are difficult to detect after termination; locking in two distinct color sets at the basis-of-design level is the only reliable prevention. {note}
−
−## Environmental Classifications {toc}
−
−### The Contractor shall coordinate the enclosure environmental classification of each space with the mechanical Engineer's space classifications before procuring any enclosed equipment.
−
−### A space classified by the mechanical Engineer as a wet location shall not receive equipment in a Type 1 enclosure regardless of its interior location.
−
−### Specifying Type 1 enclosures in mechanical rooms that are classified as wet locations is a recurrent error; the electrical enclosure schedule must be reconciled against the mechanical space classifications rather than assumed dry by default.
−
−# Submittals {toc}
−
−## Action Submittals {toc}
−
−### The Contractor shall submit the following for review before procurement and installation, organized by system and clearly identifying the basis-of-design values from this section that each submittal relies upon:
−
−- Product data for each enclosure type, including NEMA Type rating, UL 50/50E listing, material, and gauge
−- Product data for wire connectors, splice kits, compression lugs, and set-screw connectors, including listing and conductor size range
−- Equipment nameplate and field-labeling schedule, including plate material, color scheme, letter height, and attachment method
−- Firestop system data for each rated penetration condition, identifying the UL or FM listed system number and hourly rating
−- Seismic restraint product data and, where required by the seismic design category, engineered anchorage and bracing details
−- Electrical coordination drawings showing conduit routing, equipment clearances, and resolved conflicts with other trades
−- Arc-flash labeling format and a statement assigning responsibility for the arc-flash incident-energy study
−
```datasheet
−label: Action Submittals Required
+label: Required Informational Submittals
type: checkbox
options:
− - "Enclosure product data with NEMA Type and UL 50/50E listing"
− - "Wire connector, splice, and lug product data"
− - "Nameplate and field-labeling schedule"
− - "Firestop system data with listed system numbers"
− - "Seismic restraint and engineered anchorage details"
− - "Electrical coordination drawings"
− - "Arc-flash labeling format and study responsibility statement"
−default: "Enclosure product data with NEMA Type and UL 50/50E listing"
+ - "Adopted electrical code and amendment confirmation"
+ - "Permits and inspection records"
+ - "Outage requests and log"
+ - "Installer qualification statement"
+default:
+ - "Adopted electrical code and amendment confirmation"
+ - "Permits and inspection records"
+ - "Installer qualification statement"
+constraint: all_of
```
## Closeout Submittals {toc}
−### At substantial completion and before final acceptance, the Contractor shall provide the following:
+### The Contractor shall submit the following before substantial completion:
−- Field acceptance test reports for insulation-resistance and continuity tests, signed by the responsible technician, with instrument identification, calibration date, test voltage, measured values, ambient temperature, acceptance criteria, and pass/fail determination
−- Torque-verification records for accessible terminations where required by NETA ATS
−- As-built electrical coordination drawings reflecting final installed routing and clearances
−- Completed equipment nameplate and arc-flash label schedule confirming installation
−- Warranty documentation for products carrying a manufacturer warranty
+- Record drawings showing the installed routing of feeders, underground and in-slab raceways, and cable tray, the installed location of every item of equipment, junction box, and pull box, the circuit numbers as installed, and every deviation from the Contract Drawings
+- Operation and maintenance manuals for each electrical system and each item of distribution equipment, prepared and delivered under [[sync/operation-and-maintenance-data]] and indexed by equipment tag
+- The compiled acceptance test report prepared under [[sync/electrical-acceptance-testing]]
+- Warranty documentation for each item of equipment, listing the warranty start date, the term, and the party responsible for warranty service
+- Spare parts and spare fuse receipt signed by the Owner's representative
+- Demonstration and training records naming the personnel trained, the dates, and the systems covered
```datasheet
label: Required Closeout Submittals
type: checkbox
options:
− - "Insulation-resistance and continuity test reports"
− - "Torque-verification records"
− - "As-built coordination drawings"
− - "Nameplate and arc-flash label schedule"
+ - "Record drawings"
+ - "Operation and maintenance manuals"
+ - "Compiled acceptance test report"
- "Warranty documentation"
−default: [Insulation-resistance and continuity test reports, As-built coordination drawings, Nameplate and arc-flash label schedule]
+ - "Spare parts receipt"
+ - "Demonstration and training records"
+default:
+ - "Record drawings"
+ - "Operation and maintenance manuals"
+ - "Compiled acceptance test report"
+ - "Warranty documentation"
+ - "Spare parts receipt"
+ - "Demonstration and training records"
+constraint: all_of
```
−## Informational Submittals {toc}
+### Record drawings shall be delivered in the format indicated in the datasheet.
−### The Contractor shall submit the following for the record:
−
−- Written confirmation of the AHJ-adopted NEC edition and applicable local amendments
−- Utility correspondence stating the available fault current at the service entrance
−- Qualification statements for the testing organization and seismic-restraint design professional where applicable
−
```datasheet
−label: Informational Submittals Required
−type: checkbox
+label: Record Drawing Format
+type: select
options:
− - "AHJ-adopted NEC edition confirmation"
− - "Utility available-fault-current correspondence"
− - "Testing organization and seismic designer qualifications"
−default: "AHJ-adopted NEC edition confirmation"
+ - "Marked-up prints of the Contract Drawings"
+ - "Revised CAD drawing files"
+ - "Revised building information model"
```
+### Marked-up prints cost the least to produce and record what the field crew actually saw, and they live on paper and resist searching. Revised CAD files put the record in the Owner's drafting standard at the price of a redrafting step in which field marks are reinterpreted. A revised model carries the most information and feeds facility management software directly, and it is realistic where the project was coordinated in a model to begin with. {note}
+
+### The Contractor shall keep a set of prints at the site marked up as the work is installed, and the record drawings shall be prepared from that set.
+
# Quality Assurance {toc}
## Installer Qualifications {toc}
−### All electrical work shall be performed by licensed electricians employed by a licensed electrical contractor with demonstrated experience on commercial, institutional, or industrial projects of comparable scope.
+### Electrical work shall be performed by a contractor licensed for electrical work in the project jurisdiction.
−### Personnel performing field acceptance testing shall be qualified in the use of insulation-resistance and continuity test instruments and shall follow the procedures of NETA ATS.
+### Each crew performing electrical work shall be supervised at the site by an electrician licensed in the project jurisdiction, and where the jurisdiction licenses individual electricians, each electrician shall hold the license the jurisdiction requires for the work performed.
+### The additional qualifications a particular system requires of its installers, such as the fire alarm, structured cabling, and medium-voltage cable splicing certifications, are stated by the standards governing those systems. {note}
+
## Listing and Labeling {toc}
−### All electrical equipment, enclosures, connectors, and devices shall be listed and labeled by a Nationally Recognized Testing Laboratory under the applicable UL standard.
+### Every product installed under an electrical standard shall be listed and labeled by a Nationally Recognized Testing Laboratory for the use and for the environment in which it is installed, under the product standard its governing standard names, and where that standard names none, under the UL standard applicable to the product.
−### Listed industrial control panels supplied under this division shall be marked with a short-circuit current rating per UL 508A and shall not be installed where the available fault current exceeds the marked SCCR.
+### Equipment for which no listing category exists, and equipment modified in the field in a way that affects its listing, shall be field-evaluated and labeled by a Nationally Recognized Testing Laboratory before it is energized.
−### Unlisted electrical equipment shall not be installed.
+### An equipment listing is what the inspector and the Engineer of Record rely on in place of evaluating each product's electrical and fire safety themselves, and NFPA 70 110.3(B) makes the listing instructions part of the installation requirements. A field modification that alters the wiring, the overcurrent devices, or the enclosure voids the listing, and the field evaluation label restores the basis the Authority Having Jurisdiction accepts. {note}
−## Electrical Safety {toc}
+## Electrical Safety During Construction {toc}
−### Field work, energization, and commissioning shall be performed in accordance with NFPA 70E, including establishment of an electrically safe work condition and use of personal protective equipment appropriate to the incident energy at the equipment.
+### Work on or near conductors or circuit parts that are or may become energized shall be performed by qualified persons in accordance with NFPA 70E and 29 CFR 1926 Subpart K.
−### Arc-flash warning labels shall be applied to equipment in accordance with NFPA 70E and the incident-energy results of the arc-flash study before the equipment is energized for normal operation.
+### New electrical work shall be installed, connected, and tested with the circuit de-energized and locked out, and energized work shall be performed only under a written energized electrical work permit issued under the Contractor's electrical safety program or, where the Owner's program under [[sync/electrical-safety-program]] governs the site, under that program.
−### The arc-flash labeling and personal protective equipment requirements flow from the basis-of-design assumptions about available fault current into field execution; if the study is not assigned an owner in this section, the labels are frequently missing at closeout and generate inspection failures. {note}
+### No item of electrical equipment shall be energized until the acceptance tests its governing standard requires have been completed under [[sync/electrical-acceptance-testing]], the Authority Having Jurisdiction has inspected the installation, and the Engineer of Record has released it for energization in writing.
−## Coordination {toc}
+### Construction power, lighting, and the protection of temporary circuits are governed by [[sync/temporary-facilities-and-controls]]. {note}
−### The Contractor shall coordinate electrical rough-in, equipment clearances, and penetration locations with the structural, mechanical, and plumbing trades before installation.
+# Enclosure Types by Location {toc}
−### Coordination drawings shall be prepared at a scale sufficient to resolve conduit routing conflicts, maintain NEC working clearances, and confirm sleeve and penetration locations against the structural drawings.
+## Every enclosure furnished under an electrical standard shall be rated under NEMA 250 and listed under UL 50 and UL 50E for the environment of its installed location, and the enclosure type for the normal location of each product shall be as selected under the standard governing that product.
−# Wire Connections and Splices {toc}
+## An enclosure installed outdoors shall be Type 3R or higher.
−## This section governs the general workmanship of connections and splices for conductors rated 600V and below. Conductor materials, sizing, and insulation types are governed by [[sync/conductors-and-cables]]; motor terminal connections are governed by [[sync/electric-motors]]. {note}
+## An enclosure installed where it is exposed to hose-directed water, wash-down, or dripping or splashing liquid shall be Type 4 or Type 4X.
−## Connector Selection {toc}
+## An enclosure installed where it is exposed to salt air, chlorine, chemical vapor, or another corrosive agent, indoors or outdoors, shall be Type 4X.
−### Splices and taps on conductors No. 8 AWG and larger shall be made with listed compression-type connectors or listed mechanical set-screw connectors rated for the conductor material and size.
+## An enclosure installed where the atmosphere carries non-hazardous dust, lint, fibers, or oil mist shall be Type 12, Type 4, or Type 4X.
−### Splices on conductors No. 10 AWG and smaller may be made with listed twist-on connectors or listed insulation-displacement connectors.
+## An enclosure installed within a location classified under NFPA 70 Articles 500 through 516 shall be Type 7 in a Class I location and Type 9 in a Class II location, unless the equipment inside it is protected by another technique that the installation under [[sync/electrical-hazardous-locations]] permits for that equipment.
−### The No. 8 AWG threshold reflects the point at which compression and bolted connections become more reliable than twist-on connectors under the thermal cycling and mechanical stress of larger conductors. {note}
+## A location the Contract Documents or [[parameter: adopted-electrical-code]] designate as damp, wet, corrosive, or classified shall receive enclosures for that location whether or not the standard governing the equipment restates it.
−### Connectors shall be listed and marked for the conductor material.
+## Where the location of an item of equipment demands a higher enclosure type than the datasheet of its governing standard selects, the higher type shall be furnished at that location.
−### Connectors used on aluminum conductors shall be marked AL or AL/CU, and anti-oxidant compound shall be applied where required by the connector listing.
+## Type 1 keeps fingers off live parts in a dry, conditioned interior and does nothing else. Type 12 is gasketed against dust and dripping oil and does not resist a hose. Type 3R sheds rain and sleet outdoors and admits a hose stream, condensation, and wind-driven dust. Type 4 resists the hose, and Type 4X resists the hose and the atmosphere, in stainless steel where it will be struck and in a non-metallic material where chlorides would pit the steel. Type 7 contains an internal explosion of a Class I gas, and Type 9 excludes a Class II dust and limits its own surface temperature; the device inside either has to be listed for the location along with the box. Each product standard asks the enclosure question once for the location its product normally occupies, and these clauses raise the answer wherever the location is worse. {note}
−### Conductor terminations shall be torqued to the manufacturer's published values, and the torque shall be verified during field acceptance testing where required by NETA ATS.
+# Trade Coordination {toc}
−```datasheet
−label: Splice Connector Type — No. 8 AWG and Larger
−type: radio
−options:
− - "Compression (crimp) connectors, listed for material and size"
− - "Mechanical set-screw connectors, listed for material and size"
− - "Split-bolt connectors (tap connections only)"
−default: "Compression (crimp) connectors, listed for material and size"
−```
+## Coordination Drawings {toc}
+### Where composite coordination drawings are prepared under [[sync/common-work-results-mechanical]], the electrical trade shall add its work to them in every area they cover, within the response period that standard sets, and shall not prepare separate drawings for those areas.
+
+### Where no composite coordination drawings are prepared, the Contractor shall prepare electrical coordination drawings for each electrical room, each shaft, each ceiling plenum and corridor in which feeders, busway, or cable tray are routed, and each other area in which electrical equipment or raceway shares space with structure, ductwork, piping, or ceiling systems, before any work in that area is fabricated or installed.
+
+### Electrical coordination drawings shall show, at true size, the electrical equipment with the working space and dedicated space NFPA 70 110.26 requires for it, conduit of 2 in. trade size and larger, cable tray, busway, wireways, luminaires, and the work of the other trades indicated in the datasheet.
+
```datasheet
−label: Splice Connector Type — No. 10 AWG and Smaller
−type: radio
+label: Work of Other Trades Shown on Electrical Coordination Drawings
+type: checkbox
options:
− - "Twist-on (wire-nut) connectors, listed"
− - "Insulation-displacement connectors, listed"
−default: "Twist-on (wire-nut) connectors, listed"
+ - "Structure, including beams, joists, and slab depressions"
+ - "Ductwork and its insulation"
+ - "Mechanical piping and its insulation"
+ - "Plumbing piping"
+ - "Fire sprinkler piping"
+ - "Ceiling systems and ceiling-mounted devices"
+ - "Telecommunications pathways and cable tray"
+ - "Process equipment and process piping"
+default:
+ - "Structure, including beams, joists, and slab depressions"
+ - "Ductwork and its insulation"
+ - "Mechanical piping and its insulation"
+ - "Plumbing piping"
+ - "Fire sprinkler piping"
+ - "Ceiling systems and ceiling-mounted devices"
+ - "Telecommunications pathways and cable tray"
+constraint: all_of
```
−## Splice Insulation and Location {toc}
+### Conflicts the trades cannot resolve among themselves shall be referred to the Engineer of Record in writing, with the proposed resolutions, before work in the affected area proceeds.
−### Splices and joints shall be insulated to a level equivalent to the conductor insulation using listed materials.
+### Work installed in an area before the coordination drawings for that area are accepted shall be relocated at the Contractor's cost where it conflicts with the accepted drawings.
−### Splices shall be made only in accessible enclosures, boxes, or wireways; splices shall not be made within raceways.
+### Conduit is the most flexible element in a ceiling and is routed last under the space priority rule the mechanical umbrella sets, which is why a separate electrical coordination process is wasted effort where a composite one exists. The elements the electrical trade cannot move are the equipment and its working space, the busway, and the cable tray, and those are what the coordination drawing exists to protect. {note}
−### Splices in wet or damp locations shall be made with connectors and insulation listed for wet-location use or shall be encapsulated in a listed resin splice kit.
+## Information to Other Trades {toc}
−# Enclosures {toc}
+### The Contractor shall furnish to the concrete and masonry trades the locations and sizes of every sleeve, block-out, slab stub-up, and housekeeping pad for electrical work before the formwork is closed or the masonry is laid.
−## NEMA enclosure type selection drives whether equipment survives its environment. The brief governs selection by space classification; the type chosen for each space must match the conditions the equipment will actually see, not the most convenient stock item. This section sets the project-wide default mapping and the manufacturers' published NEMA types govern the procured product. {note}
+### The Contractor shall furnish to the structural trade the operating weights and the support and anchorage reactions of electrical equipment hung from or set on the structure before that structure is fabricated or placed.
−## Enclosure Type Selection {toc}
+### The Contractor shall furnish to the mechanical trade the heat rejection of the electrical equipment in each electrical room and closet before the ventilation or cooling for that room is fabricated.
−### Enclosures shall be selected and provided to the NEMA 250 type appropriate to the environmental conditions of each installation location, confirmed against the mechanical space classifications.
+### Where the approved equipment differs from the scheduled basis in any dimension, weight, heat rejection, or connection another trade relies on, the Contractor shall issue the change to that trade in writing within five working days of the approval.
−### Dry interior spaces shall receive Type 1 general-purpose enclosures unless a more severe classification applies.
+# Equipment Access and Working Space {toc}
−### Outdoor above-grade locations shall receive Type 3R rainproof enclosures at minimum.
+## Every item of electrical equipment likely to require examination, adjustment, servicing, or maintenance while energized shall be installed with the working space, the headroom, and the entrance to that space that NFPA 70 110.26 requires for its voltage and condition, wherever it is installed.
−### Wet, corrosive, washdown, and process locations shall receive Type 4X enclosures of 316 stainless steel or fiberglass.
+## The dedicated equipment space NFPA 70 110.26(E) requires above and below switchboards, switchgear, panelboards, and motor control centers shall be kept clear of ductwork, piping, and other foreign systems, and the Contractor shall report to the Engineer of Record in writing any foreign system shown or installed in that space before installing the equipment.
−### Industrial dust and dripping-liquid environments shall receive Type 12 enclosures.
+## Junction boxes, pull boxes, splices, and devices that require access shall be installed so they can be reached without removing other work or ceiling construction other than a lay-in ceiling panel or an access door furnished under [[sync/access-doors-and-panels]].
−### Enclosures installed in classified hazardous locations shall be Type 7 or Type 9 as appropriate to the area classification.
+## Equipment that cannot be installed with the required working space at the location shown shall be reported to the Engineer of Record in writing before it is installed.
−### Selecting a less severe enclosure type than the location demands is a code deficiency and a premature-failure risk; the enclosure schedule must therefore be reconciled against the space classifications before procurement.
+## Equipment installed without the working space NFPA 70 110.26 requires shall not be energized until the space is provided or the Engineer of Record has accepted the condition in writing.
−```datasheet
−label: Default Enclosure Type — Dry Interior
−type: radio
−options:
− - "NEMA Type 1 (general purpose, indoor)"
− - "NEMA Type 12 (dust-tight industrial)"
−default: "NEMA Type 1 (general purpose, indoor)"
−```
+## The design of dedicated electrical rooms, including their clearances, headroom, ventilation, and egress, is governed by [[sync/electrical-rooms]]; this section applies to electrical equipment wherever else it is installed, including mechanical rooms, corridors, ceiling spaces, and the outdoors. {note}
−```datasheet
−label: Default Enclosure Type — Outdoor
−type: radio
−options:
− - "NEMA Type 3R (rainproof)"
− - "NEMA Type 4 (watertight)"
− - "NEMA Type 4X (watertight, corrosion-resistant)"
−default: "NEMA Type 3R (rainproof)"
−```
+# Serving Equipment Furnished Under Other Standards {toc}
−```datasheet
−label: Default Enclosure Type — Wet or Corrosive Process Space
−type: radio
−options:
− - "NEMA Type 4X, 316 stainless steel"
− - "NEMA Type 4X, fiberglass (non-metallic)"
−default: "NEMA Type 4X, 316 stainless steel"
−```
+## Each item of utilization equipment furnished under a mechanical, plumbing, fire suppression, process, cathodic protection, or other non-electrical standard shall be served by the electrical trade with the branch circuit or feeder, the disconnecting means, and the branch-circuit overcurrent protection that NFPA 70 and the equipment schedule require for it, as shown on [[drawing: the electrical one-line diagram and the equipment and motor schedules]].
−## Enclosure Construction {toc}
+## The components of that service shall be furnished under the standards that govern them:
−### Steel enclosures shall be finished with a corrosion-resistant coating; outdoor and damp-location steel enclosures shall be hot-dip galvanized or finished with an equivalent corrosion-resistant system.
+- The conductors, under [[sync/conductors-and-cables]] or, for feeders, [[sync/distribution-feeder-cables]]
+- The raceway, boxes, and rough-in, under [[sync/raceways-and-conduit]]
+- The overcurrent device, under [[sync/panelboards]], [[sync/low-voltage-switchboards]], [[sync/low-voltage-switchgear]], or [[sync/motor-control-centers]], whichever assembly holds it
+- The disconnecting means, under [[sync/enclosed-switches-and-disconnects]] or, where a starter is the disconnect, [[sync/combination-motor-starters]]
+- The equipment grounding and bonding, under [[sync/grounding-and-bonding]]
−### Enclosure doors and covers shall be gasketed where the NEMA type requires a sealed environment, and gaskets shall be continuous and undamaged.
+## A disconnecting means within sight of each motor, electric actuator, rectifier, or other item of utilization equipment shall be furnished where NFPA 70 Article 430 or the article governing that equipment requires one, unless the equipment is furnished with a factory-mounted disconnect that its listing and NFPA 70 accept as the disconnecting means.
−# Working Clearances {toc}
+## Overcurrent protection on the supply to a fire pump controller shall comply with NFPA 70 Article 695 in addition to the standard governing the device.
−## Maintaining NEC 110.26 working clearance is frequently verified only at design and then compromised in the field as equipment is added to tight mechanical and electrical rooms. Because energization cannot proceed without compliant clearances, the contractor must confirm them as-built rather than relying on the design drawings. {note}
+## Before ordering the overcurrent device, the disconnecting means, and the conductors serving an item of equipment furnished under another standard, the electrical trade shall take that equipment's voltage, phase, full-load current, minimum circuit ampacity, and maximum overcurrent protection from the reviewed submittal for the equipment rather than from the schedule.
−## Clearance Requirements {toc}
+## Where a value taken from the reviewed submittal differs from the value shown on the schedules, the electrical trade shall report the difference to the Engineer of Record in writing before ordering, and the circuit shall not be installed until the Engineer of Record has responded.
−### Working clearances about electrical equipment shall be maintained in accordance with NEC 110.26 for the system voltage and condition present.
+## Control and network wiring to such equipment shall be installed by the party the umbrella standard of the equipment's discipline or the Contract Documents assign, using the wiring methods of NFPA 70, with the cable under [[sync/instrumentation-and-control-cable]] and the control system under [[sync/control-systems-integration]] or [[sync/building-automation-system]] as the equipment's discipline requires.
−### The minimum clear depth in front of equipment operating at 0 to 150V to ground shall be 36 in. (914 mm).
+## Equipment is bought from a schedule and circuits are sized from the same schedule, and the two diverge the moment a substitute unit arrives with a larger motor or a different control transformer. The mechanical and process umbrellas require the equipment trade to reconcile the approved unit against the circuit shown; this clause puts the same check on the electrical side, so that a breaker is corrected while it is still a line item instead of a change order. {note}
−### The minimum clear depth in front of equipment operating at 151 to 600V to ground under the most common installation condition shall be 42 in. (1067 mm).
+# Sleeves, Penetrations, and Firestopping {toc}
−### The minimum clear width of the working space shall be 30 in. (762 mm) or the width of the equipment, whichever is greater.
+## A sleeve shall be provided at every point a conduit, cable, or busway passes through a concrete or masonry wall, floor, roof, or foundation, set before the concrete is placed or the masonry is laid wherever the construction sequence allows.
−### The Contractor shall field-verify that NEC 110.26 working clearances are maintained as-built before any equipment is energized, and shall report any non-compliant condition to the Engineer of Record before energization.
+## Sleeves through foundation walls, below-grade walls, and floors subject to wetting shall be galvanized steel pipe.
−```datasheet
−label: Working Clearance Condition (NEC 110.26)
−type: radio
−options:
− - "Condition 1 (exposed live parts on one side, no live or grounded parts on the other)"
− - "Condition 2 (exposed live parts on one side, grounded parts on the other)"
− - "Condition 3 (exposed live parts on both sides of the working space)"
−default: "Condition 2 (exposed live parts on one side, grounded parts on the other)"
−```
+## Sleeves elsewhere shall be galvanized steel pipe, galvanized sheet steel, or a cast-in sleeve device, and at a rated assembly the sleeve shall be one the listed firestop system includes.
−# Equipment Identification and Labeling {toc}
+## Sleeves through floors in electrical rooms, mechanical rooms, and other locations subject to standing water or wash-down shall project not less than 2 in. above the finished floor.
−## Labeling is routinely the last item completed before final inspection, and vague or absent labeling requirements are a significant source of change-order and re-inspection risk. Setting the material, size, format, and attachment method explicitly here removes that ambiguity from every downstream section. {note}
+## The annular space at a penetration through a foundation wall, a below-grade wall, or a slab on grade shall be sealed watertight with a modular mechanical sleeve seal or a cast-in sleeve with a waterstop collar, rated for not less than the hydrostatic head at the penetration.
−## Nameplates {toc}
+## The annular space at a non-rated penetration in a dry location shall be packed and sealed with sealant at each face.
−### Each panelboard, switchboard, disconnect, motor controller, transfer switch, and major piece of distribution equipment shall be identified with an engraved laminated phenolic nameplate.
+## Penetrations of fire-resistance-rated and smoke-resistant assemblies by electrical work shall be firestopped under [[sync/firestopping]] with a system listed for the assembly, the penetrant, the sleeve, and the annular dimension at that condition.
−### Nameplates shall identify the equipment designation, the voltage and phase, and the source feeding the equipment.
+## Sleeve size and annular dimension at each rated penetration shall be set to match a listed firestop system before the sleeve is installed.
−### Equipment-identification nameplate lettering shall be a minimum of 1/4 in. (6 mm) high; circuit-identification and device-tag lettering shall be a minimum of 1/8 in. (3 mm) high.
+## Penetrations of the roof and of exterior walls by electrical work shall be flashed and sealed under the standards governing those assemblies, and the electrical trade shall furnish the sleeve, pipe portal, or flashing sleeve the flashing detail requires.
−### Phenolic nameplates shall be a minimum of 1/16 in. (1.6 mm) thick with engraved lettering exposing a contrasting core color.
+## A firestop system is listed for a specific annulus around a specific penetrant, and a sleeve cut to fit the conduit bundle with no room for the fill is the most common reason an electrical penetration fails inspection. Setting the sleeve to a listing before it is cast is what makes the firestop installable later. {note}
−### Nameplates shall be attached with stainless steel screws or rivets; adhesive-only attachment shall not be used on equipment subject to vibration or washdown.
+# Supports and Seismic Restraint {toc}
−```datasheet
−label: Nameplate Color Scheme
−type: radio
−options:
− - "Black letters on white core (normal power)"
− - "White letters on black core"
− - "White letters on red core (emergency/life-safety systems)"
−default: "Black letters on white core (normal power)"
−```
+## Electrical equipment, raceways, cable tray, and busway shall be supported from the building structure under the standard governing each, and shall not be supported from ductwork, piping, ceiling suspension systems, or other trades' work.
−```datasheet
−label: Nameplate Attachment Method
−type: radio
−options:
− - "Stainless steel screws"
− - "Stainless steel rivets"
− - "Adhesive backing (dry interior, non-vibrating equipment only)"
−default: "Stainless steel screws"
−```
+## Floor-mounted electrical equipment shall be set on concrete housekeeping pads furnished under [[sync/concrete-pads]] where its governing standard or the Contract Documents require a pad, and shall be anchored to the pad or the structure with the anchors its governing standard or the seismic restraint design requires.
−## Field Labeling {toc}
+## Seismic restraint of electrical equipment, raceways, cable tray, and busway shall be provided under [[sync/vibration-isolation-and-seismic-restraint]] wherever ASCE/SEI 7 Chapter 13 requires it for [[parameter: seismic-design-category]].
−### Conductors and cables shall be identified at each termination and at each accessible point with circuit identification consistent with the panel schedules.
+## This standard sets no restraint detail of its own. It names the threshold once so that no electrical standard can be read as exempt from it, and it leaves the exemptions, the design responsibility, the bracing, and the certification to the restraint standard, which carries them in full. {note}
−### Raceways carrying systems other than normal 60 Hz power shall be identified with color bands or markers at each penetration and at intervals not exceeding 50 ft (15 m) in accessible spaces.
+# Electrical Work in Existing Buildings {toc}
−### Junction and pull boxes shall be marked to identify the system and voltage of the conductors they contain.
+## Maintaining Service and Outages {toc}
−## Arc-Flash Labeling {toc}
+### Electrical service to the occupied areas of an existing building, and to the systems the Owner keeps in operation during construction, shall be maintained throughout the work except during outages scheduled under this article.
−### Equipment likely to require examination, adjustment, servicing, or maintenance while energized shall bear an arc-flash warning label in accordance with NFPA 70E.
+### Each planned outage shall be requested in writing, stating the systems and areas affected, the proposed start time, and the duration, not less than the number of days indicated in the datasheet before the outage.
−### Arc-flash label content shall reflect the actual results of the project arc-flash incident-energy study performed in accordance with IEEE 1584, including the incident energy in cal/cm², the working distance, and the arc-flash boundary.
−
−### Responsibility for performing the arc-flash study shall be assigned in the contract documents; the study shall not be left unassigned, as an unassigned study is the most common source of missing labels at closeout.
−
```datasheet
−label: Arc-Flash Label Basis
−type: radio
+label: Advance Notice of Planned Outages
+type: range
+unit: days
options:
− - "Incident energy analysis per IEEE 1584 (cal/cm²)"
− - "PPE category method per NFPA 70E Table 130.5(G)"
−default: "Incident energy analysis per IEEE 1584 (cal/cm²)"
+ min: 1
+ max: 14
+ setpoints: [1, 2, 3, 5, 7, 10, 14]
+constraint: min
```
−```datasheet
−label: Arc-Flash Study Responsibility
−type: radio
−options:
− - "Engineer of Record"
− - "Owner (separate study contract)"
− - "Contractor (delegated design)"
−default: "Engineer of Record"
−```
+### Planned outages shall be scheduled on the basis indicated in the datasheet.
−# Sleeves and Penetrations {toc}
−
−## Penetrations of rated assemblies are a life-safety interface, and the firestop system is only as good as the listed assembly it matches. Leaving the system to the contractor's discretion routinely produces incompatible product combinations; the spec must either name a listed system or require the selected listed system to be submitted for review. {note}
−
−## Sleeves {toc}
−
−### Conduit and cable penetrations through floors and walls shall be made through sleeves sized to accommodate the conduit group plus the annular clearance required by the firestop system.
−
−### A minimum annular clearance of 1/4 in. (6 mm) shall be maintained around the penetrating item for installation of the firestop material unless the listed system specifies otherwise.
−
−### Sleeve diameters shown on the structural and electrical drawings shall be reconciled during coordination; undersized sleeves that cannot accommodate the conduit group plus firestop clearance shall be flagged as a conflict before installation.
−
```datasheet
−label: Floor Sleeve Material
+label: Planned Outage Timing
type: radio
options:
− - "Galvanized steel pipe sleeve"
− - "Schedule 40 PVC sleeve (dry locations)"
− - "Cast-in-place firestop sleeve device"
−default: "Galvanized steel pipe sleeve"
+ - "During normal working hours, with notice"
+ - "Outside normal working hours only"
+ - "At the time the Owner approves for each outage, with no standing rule"
```
−## Firestopping {toc}
+### A short notice period and daytime outages suit a building that is unoccupied or whose occupants can tolerate an interruption, and they keep the work on straight time. Outages outside working hours protect an occupied office, school, or clinic and are paid for in overtime and in a crew that works at night; a hospital, a data center, or a plant on continuous process tolerates neither rule and reviews each outage on its own, which is the position with no standing rule. Two weeks of notice gives an Owner time to warn tenants and reschedule operations, and one or two days is enough where the Owner's own staff are the only people affected. {note}
−### Penetrations through fire-rated walls, floors, and assemblies shall be sealed with a firestop system tested in accordance with ASTM E814 and listed by UL or FM for the specific penetration condition.
+### An outage shall not begin until the Owner has approved the request in writing.
−### The hourly fire-resistance rating of the firestop system shall equal or exceed the rating of the assembly being penetrated per IBC Section 714.
+### Where an outage cannot be completed within the approved duration, the Contractor shall restore service at the end of that duration and reschedule the remaining work, unless the Owner extends the approval at the time.
−### The Contractor shall submit the listed UL or FM firestop system number for each penetration condition before installation.
+### An outage of a fire alarm, emergency, or standby system shall be reported in advance to the Authority Having Jurisdiction and to the Owner's insurer where either requires notice, and the interim measures they require shall be in place before the outage begins.
−```datasheet
−label: Penetration Firestop Assembly Rating
−type: radio
−options:
− - "1-hour rated assembly"
− - "2-hour rated assembly"
− - "3-hour rated assembly"
−default: "2-hour rated assembly"
−```
+### The Contractor shall keep a log of each outage stating the systems affected, the start and end times, and the work performed, and shall submit it with the informational submittals.
−# Equipment Supports and Seismic Restraint {toc}
+### Existing circuits, equipment, and raceways to be removed, abandoned, or relocated shall be handled under [[sync/electrical-demolition-and-relocation]].
−## Seismic restraint is a code requirement above a defined seismic design category, yet many electrical specifications still ship without seismic articles. Omitting bracing where ASCE 7 Chapter 13 requires it is a code deficiency, so this section sets the threshold and assigns responsibility for the engineered details. {note}
+## Cutting and Patching {toc}
−## Supports {toc}
+### Cutting, coring, and drilling for electrical work shall be performed so as not to impair the strength, weather resistance, or fire resistance of the construction cut.
−### Electrical equipment, raceways, and enclosures shall be supported independently of other trades' systems by supports adequate for the static and dynamic loads imposed.
+### Before coring or drilling an existing concrete slab or wall, the Contractor shall locate the embedded reinforcement, conduit, and post-tensioning tendons with a scanning instrument and shall mark the core location clear of them.
−### Equipment supports and anchorage shall not be attached to mechanical piping, ductwork, or ceiling suspension systems.
+### A post-tensioning tendon shall not be cut, nicked, or drilled under any circumstances.
−## Seismic Restraint {toc}
+### Structural members shall not be cut, notched, or cored except where shown on the structural drawings or approved in writing by the structural Engineer of Record.
−### The seismic design category for the project shall be declared, and seismic restraint of electrical equipment and raceways shall be provided where required by ASCE 7 Chapter 13 (Seismic Design Categories C, D, E, and F).
+### Openings cut through rated assemblies shall be firestopped as required under the Sleeves, Penetrations, and Firestopping section of this standard.
−### Lateral bracing of braced conduit runs shall be provided at intervals not exceeding 12 ft (3.6 m), and longitudinal bracing at intervals not exceeding 24 ft (7.3 m), unless the engineered restraint design indicates otherwise.
+### Surfaces disturbed by electrical work shall be patched to match the adjacent undisturbed construction in material, thickness, texture, and finish.
−### Electrical equipment exceeding 400 lb (182 kg), and equipment on flexible or vibration-isolated connections in Seismic Design Category D and above, shall be anchored in accordance with engineered details prepared by or under the direction of the structural Engineer of Record.
+### Where the parties disagree whether a patch matches the adjacent construction, the Architect shall make the determination.
−### Responsibility for seismic anchorage and bracing calculations shall be assigned in the contract documents as either Engineer-of-Record-designed or contractor-delegated-design, and pre-engineered ICC-ES listed bracing assemblies may be used where their listings cover the imposed loads.
+# Protection and Cleaning {toc}
−```datasheet
−label: Seismic Design Category (ASCE 7)
−type: radio
−options:
− - "SDC A or B (seismic restraint not required)"
− - "SDC C"
− - "SDC D"
− - "SDC E or F"
−default: "SDC A or B (seismic restraint not required)"
−```
+## Electrical equipment and materials shall be stored off the ground, under cover, in a dry space protected from condensation, construction traffic, and physical damage.
−```datasheet
−label: Seismic Anchorage Design Responsibility
−type: radio
−options:
− - "Engineer of Record"
− - "Contractor delegated design (PE-stamped)"
− - "Pre-engineered ICC-ES listed assemblies"
−default: "Engineer of Record"
−```
+## Switchgear, switchboards, motor control centers, transformers, and drives stored or installed in a space that is not yet conditioned shall have their space heaters energized from a temporary circuit, or shall be kept dry by a desiccant or a temporary heat source where no heaters are furnished.
−# Cutting and Patching {toc}
+## Equipment installed before the building is weather-tight shall be protected from moisture, dust, paint overspray, and physical damage until the space it occupies is enclosed and conditioned.
−## Cutting and Patching for Rough-In {toc}
+## Open ends of raceways, and the openings of enclosures whose covers are off, shall be capped or covered whenever work on them is not in progress.
−### Cutting and patching of construction to accommodate electrical rough-in shall be coordinated with the affected trade and shall restore the cut surface to its original rating and finish.
+## Before energization, the interior of each enclosure shall be cleaned of construction debris, dust, and moisture by vacuum, and shipping braces, blocks, and packing shall be removed.
−### Structural members shall not be cut, notched, or bored except where shown on the structural drawings or approved in writing by the structural Engineer of Record.
+## Compressed air shall not be used to clean the interior of an enclosure containing bus, insulators, or electronic devices.
−### Penetrations of fire-rated or smoke-rated assemblies created during cutting shall be firestopped in accordance with the firestopping requirements of this standard.
+## Factory finishes damaged during construction shall be touched up with the manufacturer's finish before substantial completion.
−# Field Acceptance Testing {toc}
+## Where the Engineer of Record determines that touch-up does not restore a damaged factory finish, the component shall be refinished or replaced at the Contractor's cost.
−## Without clear pass/fail criteria and a submittal requirement for the test records, insulation-resistance and continuity testing become a source of dispute at substantial completion. This section states the test voltages, acceptance values, and record requirements so that commissioning has an objective basis. {note}
+## Blowing an enclosure out with compressed air drives conductive dust into bus joints, relays, and trip units and leaves it there, which is why vacuum cleaning is required. Gear stored in a damp building without its heaters energized condenses moisture on its insulators, and the first evidence of it is an insulation resistance reading that fails acceptance. {note}
−## Insulation-Resistance Testing {toc}
+# Demonstration and Training {toc}
−### Feeders and branch-circuit conductors shall be tested for insulation resistance after installation and before energization, conductor-to-conductor and conductor-to-ground, with all equipment disconnected.
+## Before substantial completion, the Contractor shall demonstrate the operation of each electrical distribution system, each emergency and standby system, and each lighting, communications, and electronic safety and security system to the Owner's operating and maintenance personnel, and shall train those personnel in its normal operation, its maintenance, and its response to an alarm or a fault.
−### Insulation-resistance tests on systems rated 600V and below shall be performed at 500 VDC; motor feeders shall be tested at 1000 VDC.
+## The total duration of demonstration and training furnished under this section shall be not less than the number of hours indicated in the datasheet, in addition to any training a governing equipment or system standard requires for its own product.
−### The test shall be applied for a minimum duration of 1 minute, and the measured insulation resistance shall be not less than 1 MΩ as a hard minimum, with 20 MΩ recommended in accordance with IEEE 43 for new installations.
−
−### Conductors or circuits failing the minimum insulation-resistance criterion shall not be energized until the cause is identified and corrected.
−
```datasheet
−label: Insulation-Resistance Test Voltage — 600V and Below Systems
−type: radio
+label: Demonstration and Training Duration
+type: range
+unit: hours
options:
− - "500 VDC"
− - "1000 VDC (motor feeders)"
−default: "500 VDC"
+ min: 0
+ max: 40
+ setpoints: [0, 2, 4, 8, 16, 24, 40]
+constraint: min
```
−```datasheet
−label: Minimum Insulation-Resistance Acceptance
−type: range
−unit: MΩ
−min: 1
−max: 100
−step: 1
−```
+## Training shall be conducted after the operation and maintenance manuals have been delivered, using those manuals as the text, by persons who installed the system or by the manufacturer's representative for the equipment covered.
−## Continuity and Rotation {toc}
+## Each session shall be recorded on a training record stating the date, the system covered, the instructor, and the personnel trained, and the records shall be submitted with the closeout submittals.
−### All conductors shall be tested for end-to-end continuity after installation, and no conductor shall exhibit an open circuit.
+## A small building with a few panelboards and a lighting control system is covered in an hour or two, and a plant with switchgear, generators, transfer switches, and a power monitoring system can need days; the hours are set by what the Owner's staff will be expected to operate without calling the Contractor back. The hours stated here carry the systems whose standards state none, and a system standard that states its own hours adds to them. {note}
−### Phase rotation on all 3Φ feeders shall be verified with a phase-rotation meter before connection of rotation-sensitive equipment.
+# Warranty {toc}
−### Phase rotation shall be confirmed consistent across the distribution system before connection of rotation-sensitive equipment.
+## The Contractor shall warrant the electrical work against defects in materials and workmanship for the period indicated in the datasheet, measured from the date of substantial completion.
−### Confirming phase rotation before connecting motors and other rotation-sensitive equipment prevents reverse rotation that can damage driven equipment on first energization. {note}
+```datasheet
+label: Workmanship Warranty Period
+type: range
+unit: years
+options:
+ min: 1
+ max: 5
+ setpoints: [1, 2, 3, 5]
+default: 1
+constraint: min
+```
−## Torque Verification {toc}
+## During the warranty period the Contractor shall repair or replace defective work at no cost to the Owner.
−### Accessible bolted and set-screw terminations shall have their torque verified against the manufacturer's published values where required by NETA ATS.
+## The Contractor shall repair other work damaged by a warranted defect or by its correction at no cost to the Owner.
−### Torque-verification results shall be recorded and included in the field acceptance test reports.
+## Work repaired or replaced under warranty shall be warranted for a fresh full term from the date of the repair or for the remainder of the original term, whichever is longer.
−# Cleaning {toc}
+## Manufacturer warranties on equipment and components shall be assigned to the Owner and shall run from the date of substantial completion.
−## Cleaning and Protection {toc}
+## Where a manufacturer's warranty runs from startup or shipment rather than from substantial completion, the Contractor shall warrant the equipment on the manufacturer's terms for the interval between the two dates.
−### Electrical equipment and enclosures shall be cleaned of construction debris, dust, and moisture before energization, and interior bus and termination surfaces shall be free of foreign material.
+## The warranty term and coverage particular to a product are stated by the standard governing that product, and the notice, response, correction, and claim procedure for every warranty is administered under [[sync/warranties-and-bonds]]. {note}
−### Equipment installed before the building is weather-tight shall be protected from moisture, dust, and physical damage until the space is enclosed and conditioned.
−
−# Warranty {toc}
−
−## The Contractor shall warrant all electrical work against defects in materials and workmanship for a minimum period of one year from the date of substantial completion.
−
−## Manufacturer warranties on supplied equipment shall be transferred to the Owner and shall run from the date of substantial completion.
−
−```datasheet
−label: Workmanship Warranty Period
−type: radio
−options:
− - "1 year from substantial completion"
− - "2 years from substantial completion"
−default: "1 year from substantial completion"
−```
+## A one-year warranty from substantial completion is the term the industry's standard general conditions carry, and most projects adopt it without discussion. Longer terms are bought by institutional owners who keep their buildings for decades, at a premium that rises with the term, because the contractor is pricing equipment failures it does not control. {note}