+---
+title: Service and Feeder Conductors
+category: Electrical / Power Distribution Equipment
+toc_depth: 3
+description: >
+ When to use: Specifying service conductors (from the utility service point to the
+ service equipment) and feeder conductors (from service equipment or a subpanel to
+ branch-circuit overcurrent devices) on commercial, industrial, and institutional
+ projects, for low-voltage systems (600 V and below) in raceways or as listed cable
+ assemblies, including new and retrofit work. Covers material selection (copper vs.
+ aluminum), insulation type, ampacity sizing, temperature-rating coordination,
+ overcurrent coordination, parallel assemblies, splices and taps, connectors and
+ lugs, and acceptance testing.
+ Not intended for: Branch-circuit and specialty wiring (motor, control) — see
+ sync/conductors-and-cables; metering and overhead service drops — see
+ sync/electrical-service-entrance; raceways that house these conductors — see
+ sync/raceways-and-conduit; grounding electrode, equipment grounding, and bonding
+ conductors — see sync/grounding-and-bonding; panelboard bus sizing and breaker
+ coordination beyond the lugs — see sync/panelboards; medium-voltage (above 600 V)
+ feeders and telecommunications cabling — see sync/telecommunications-rooms-and-pathways.
+---
+
+# Scope {toc}
+
+## This standard governs the materials, sizing, terminations, and field testing of service and feeder conductors rated 600 V and below for commercial, industrial, and institutional construction. {note}
+
+## Service conductors are the conductors between the utility service point and the service equipment; feeder conductors are all conductors between the service equipment (or a subpanel) and the final branch-circuit overcurrent devices. {note}
+
+## The conductors covered here are installed in raceways or supplied as listed cable assemblies (for example metal-clad cable), in both new construction and in retrofit or expansion of existing service and feeder infrastructure. {note}
+
+## Conductors for branch circuits and specialty wiring, including motor and control circuits, are outside this standard and are governed by [[sync/conductors-and-cables]]. {note}
+
+## Metering, utility service equipment enclosures, and overhead service drops are governed by [[sync/electrical-service-entrance]]. {note}
+
+## Raceway and conduit systems that house these conductors are governed by [[sync/raceways-and-conduit]]; grounding electrode conductors, equipment grounding conductors, and bonding jumpers are governed by [[sync/grounding-and-bonding]]. {note}
+
+## Panelboard bus sizing, breaker coordination, and interior distribution beyond the panelboard lugs are governed by [[sync/panelboards]]. {note}
+
+## Medium-voltage feeders above 600 V and telecommunications or low-voltage signal cabling are outside this standard. {note}
+
+# Referenced Standards {toc}
+
+## Materials, conductors, connectors, and installation shall comply with the latest adopted edition of each of the following standards unless a specific edition is cited.
+
+## Where the National Electrical Code adopted by the authority having jurisdiction differs from the editions referenced below, the adopted edition shall govern.
+
+## Where referenced standards conflict, the more stringent requirement shall govern unless the Engineer of Record directs otherwise in writing.
+
+| Standard | Title |
+|----------|-------|
+| NFPA 70 (NEC), Article 215 | National Electrical Code — Feeders |
+| NFPA 70 (NEC), Article 230 | National Electrical Code — Services |
+| NFPA 70 (NEC), Article 310 | National Electrical Code — Conductors for General Wiring |
+| NFPA 70 (NEC), Section 110.14 | National Electrical Code — Electrical Connections and Termination Temperature Ratings |
+| NFPA 70 (NEC), Section 250.122 | National Electrical Code — Size of Equipment Grounding Conductors |
+| UL 486A-486B | Wire Connectors for Use with Aluminum and/or Copper Conductors |
+| UL 486C | Splicing Wire Connectors |
+| UL 83 | Thermoplastic-Insulated Wires and Cables |
+| UL 44 | Thermoset-Insulated Wires and Cables |
+| ASTM B8 | Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft |
+| ASTM B230 | Aluminum 1350-H19 Wire for Electrical Purposes |
+| ASTM B800 | 8000 Series Aluminum Alloy Wire for Electrical Purposes, Annealed and Intermediate Tempers |
+| NEMA WC 70 / ICEA S-95-658 | Power Cables Rated 2000 V or Less for the Distribution of Electrical Energy |
+
+# Submittals {toc}
+
+## Action Submittals {toc}
+
+### The Contractor shall submit the following action submittals for review before ordering conductors or connectors:
+
+- Product data for each conductor type, including manufacturer, insulation type, voltage rating, temperature rating, and applicable UL listing.
+- Product data for each connector, lug, and splice device, including UL 486A-486B or UL 486C listing, AL/CU or copper-only marking, conductor size range, and published torque values.
+- A feeder and service conductor schedule showing, for each run, the circuit designation, conductor material, size, insulation type, number of conductors per phase, raceway, and overcurrent device rating.
+- Ampacity calculations for each feeder and service conductor, showing the termination temperature column used, ambient and bundling correction factors applied, and the continuous-load multiplier.
+
+```datasheet
+label: Action Submittals
+type: checkbox
+options:
+ - Conductor product data (type, voltage, temperature rating, listing)
+ - Connector and lug product data (listing, AL/CU marking, torque values)
+ - Feeder and service conductor schedule
+ - Ampacity calculations with temperature column and correction factors
+default:
+ - Conductor product data (type, voltage, temperature rating, listing)
+ - Connector and lug product data (listing, AL/CU marking, torque values)
+ - Feeder and service conductor schedule
+ - Ampacity calculations with temperature column and correction factors
+```
+
+## Informational Submittals {toc}
+
+### The Contractor shall submit the following informational submittals:
+
+- Manufacturer installation instructions for compression connectors, including die index, crimp count, and tooling.
+- Torque-tool calibration records for the torque-indicating tools used on field terminations.
+- Cable pulling tension and sidewall pressure calculations for runs that approach the manufacturer's published limits.
+
+```datasheet
+label: Informational Submittals
+type: checkbox
+options:
+ - Compression connector installation instructions (die, crimp count, tooling)
+ - Torque-tool calibration records
+ - Pulling tension and sidewall pressure calculations
+default:
+ - Compression connector installation instructions (die, crimp count, tooling)
+ - Torque-tool calibration records
+```
+
+## Closeout Submittals {toc}
+
+### The Contractor shall submit the following closeout submittals before final acceptance:
+
+- Insulation resistance test reports for each service and feeder conductor, including test voltage, duration, and measured values.
+- Completed torque verification records for all service and feeder terminations.
+- Marked-up record documents showing as-installed conductor sizes, materials, and routing where these differ from the contract documents.
+
+```datasheet
+label: Closeout Submittals
+type: checkbox
+options:
+ - Insulation resistance test reports
+ - Torque verification records
+ - As-installed record documents
+default:
+ - Insulation resistance test reports
+ - Torque verification records
+ - As-installed record documents
+```
+
+# Quality Assurance {toc}
+
+## All service and feeder conductors shall be installed under the supervision of a qualified electrician licensed in the jurisdiction of the project.
+
+## Conductor terminations on service equipment, switchgear, and panelboards shall be made only by personnel trained in the use of torque-indicating tools and compression tooling for the connectors specified.
+
+## Each conductor type, connector, and splice device shall bear the listing mark of a Nationally Recognized Testing Laboratory for the application and conductor material in which it is used.
+
+## Substitution of conductor material, insulation type, or connector type from that shown in the approved submittals shall not be made without written approval of the Engineer of Record.
+
+## The single most common error in feeder design is sizing a conductor from the 90°C ampacity column and then terminating it in 75°C-rated equipment; this is a Code violation under NEC 110.14(C) and shall be guarded against in both design review and field installation. {note}
+
+# Conductor Material {toc}
+
+## Both copper and AA-8000 series aluminum are accepted feeder conductor materials; the choice is an engineering trade-off between first cost, weight, ampacity per unit size, and termination discipline. {note}
+
+## Copper offers higher ampacity per unit cross-section, more forgiving terminations, and is the default for smaller feeders and for tight raceway fill, at a substantially higher material cost. {note}
+
+## Aluminum is standard industry practice for large feeders and services; for sizes of 350 kcmil and above it delivers significant cost and weight savings with no performance penalty when AA-8000 alloy and listed AL/CU connectors are used and terminations are properly torqued. {note}
+
+## Specifying copper for large feeders without evaluating aluminum is a common and costly oversight; the design shall document the basis for a copper selection at 350 kcmil and above. {note}
+
+## Conductors shall be copper or AA-8000 series aluminum alloy as scheduled for each feeder and service run.
+
+## Aluminum building-wire conductors shall be AA-8000 series aluminum alloy conforming to ASTM B800.
+
+## Aluminum 1350 alloy conductors conforming to ASTM B230 shall not be used as building wire and are permitted only where supplied as part of a listed utility service-entrance assembly.
+
+## Copper conductors shall conform to ASTM B8, Class B concentric stranding, unless flexible stranding is specified for bending-radius control.
+
+## A reduced-cross-section neutral selected for an aluminum feeder shall use the same AA-8000 alloy and listed AL/CU terminations as the phase conductors.
+
+```datasheet
+label: Conductor material
+type: radio
+options:
+ - Copper (ASTM B8)
+ - Aluminum, AA-8000 series (ASTM B800)
+default: Copper (ASTM B8)
+```
+
+```datasheet
+label: Copper conductor stranding class
+type: radio
+options:
+ - Class B concentric (standard building wire)
+ - Class C concentric (improved flexibility)
+ - Flexible stranding (bending-radius control)
+default: Class B concentric (standard building wire)
+```
+
+# Insulation and Conductor Type {toc}
+
+## Insulation type is selected from the wet-versus-dry location, the temperature rating needed to apply correction factors, and the conductor type listed for the application. {note}
+
+## THHN/THWN-2 is the most commonly specified type for feeders in conduit; it is dual-rated 90°C in dry locations and 90°C wet as THWN-2, is economical, and has a small overall diameter that favors raceway fill. {note}
+
+## XHHW-2 is a thermoset insulation rated 90°C in both wet and dry locations; it is preferred for large aluminum feeders, for wet and underground runs, and where superior heat and moisture resistance is wanted, at a slightly larger diameter than THHN/THWN-2. {note}
+
+## USE-2 and RHW-2 are used for direct-buried and underground-in-conduit service feeders where a wet-rated, sunlight-resistant, or burial-rated conductor is required. {note}
+
+## The 90°C rating of any of these insulations is used only to obtain headroom for ambient and bundling correction; the final ampacity is still limited by the termination temperature under NEC 110.14(C). {note}
+
+## Feeder and service conductors in conduit shall be type THHN/THWN-2, XHHW-2, or USE-2/RHW-2 as scheduled for the location.
+
+## Conductors in wet locations, underground raceways, and direct-burial applications shall be rated for wet locations at 90°C.
+
+## Thermoplastic-insulated conductors shall be listed to UL 83; thermoset-insulated conductors shall be listed to UL 44.
+
+## Insulation types shall not be mixed within a single raceway unless the raceway fill and the temperature ratings of all conductors present have been verified compatible.
+
+## All conductors of a feeder, including the neutral and any parallel sets, shall use the same insulation type.
+
+```datasheet
+label: Conductor insulation type
+type: radio
+options:
+ - THHN/THWN-2 (90°C dry / 90°C wet, thermoplastic)
+ - XHHW-2 (90°C wet and dry, thermoset)
+ - USE-2/RHW-2 (underground / wet, burial-rated)
+default: THHN/THWN-2 (90°C dry / 90°C wet, thermoplastic)
+```
+
+```datasheet
+label: Conductor voltage rating
+type: radio
+options:
+ - 600 V
+ - 1000 V
+default: 600 V
+```
+
+# Ampacity Sizing {toc}
+
+## Conductor ampacity is established in two layers: a base table ampacity from NEC Table 310.16, then correction and adjustment factors for ambient temperature and bundling, all reconciled against the termination temperature limit. {note}
+
+## Service conductors are sized to NEC 230.42 and feeder conductors to NEC 215.2; both require the conductor ampacity to equal or exceed the noncontinuous load plus 125% of the continuous load. {note}
+
+## Conductors shall be sized so that the allowable ampacity equals or exceeds the noncontinuous load plus 1.25 times the continuous load.
+
+## Conductor ampacity shall be determined from NEC Table 310.16 for the conductor material, size, and applicable temperature column.
+
+## The base table ampacity shall be reduced by the ambient temperature correction factor of NEC Table 310.15(B)(1) wherever the ambient exceeds 30°C (86°F).
+
+## The base table ampacity shall be reduced by the adjustment factor of NEC Table 310.15(C)(1) wherever more than three current-carrying conductors share a raceway.
+
+## Where a calculated conductor ampacity does not correspond to a standard overcurrent device rating, the next-higher standard device rating may be used in accordance with NEC 240.4(B) for devices rated 800 A and below.
+
+## The 80%-case default for a 200 A service or feeder is 4/0 AWG copper THHN/THWN-2 (230 A at the 75°C column) or 350 kcmil aluminum XHHW-2 (260 A at the 75°C column). {note}
+
+```datasheet
+label: Feeder or service rating (overcurrent device)
+type: select
+options:
+ - 100 A
+ - 125 A
+ - 150 A
+ - 200 A
+ - 225 A
+ - 400 A
+ - 600 A
+ - 800 A
+ - 1200 A
+ - 1600 A
+ - 2000 A
+default: 200 A
+```
+
+```datasheet
+label: Continuous load fraction (for 125% sizing)
+type: range
+unit: "%"
+min: 0
+max: 100
+step: 5
+default: 100
+```
+
+# Termination Temperature Coordination {toc}
+
+## The temperature column used for ampacity is governed by the lowest-rated termination in the circuit, not by the conductor insulation; this is NEC 110.14(C) and is the most frequently misapplied rule in feeder design. {note}
+
+## Equipment rated 100 A and below, and conductors sized 14 AWG through 1 AWG, default to the 60°C column unless the equipment and conductors are listed for a higher temperature. {note}
+
+## Equipment rated above 100 A, and conductors larger than 1 AWG, default to the 75°C column unless the equipment is marked for terminations at a higher temperature. {note}
+
+## A 90°C conductor insulation may be used to apply ambient and bundling correction from the 90°C ampacity, but the corrected result shall not exceed the ampacity of the termination temperature column unless the equipment is listed for 90°C terminations. {note}
+
+## The temperature column used for conductor ampacity shall be the lowest temperature rating among the conductor, the connected equipment terminals, and the connectors in the circuit.
+
+## Feeder and service conductors terminating on equipment rated above 100 A shall be sized using the 75°C column of NEC Table 310.16 unless the equipment is listed and marked for terminations at 90°C.
+
+## Where correction or adjustment factors are applied from the 90°C ampacity, the resulting ampacity shall be limited to the value permitted by the applicable termination temperature column.
+
+## The temperature column selected for each feeder shall be recorded in the ampacity calculation submittal.
+
+```datasheet
+label: Termination temperature rating (lowest in circuit)
+type: radio
+options:
+ - 60°C
+ - 75°C
+ - 90°C
+default: 75°C
+```
+
+# Environmental and Service Conditions {toc}
+
+## Ambient temperature and conductor bundling are the two field conditions that most often force a conductor upsize, and both are routinely overlooked when feeders pass through hot or congested spaces. {note}
+
+## Mechanical rooms, attics, rooftop runs, and exterior exposed raceways frequently exceed the 30°C (86°F) table basis and require ambient correction; for example, at 40°C (104°F) a 90°C conductor is multiplied by 0.91, and at 50°C (122°F) by 0.82. {note}
+
+## Failing to apply ambient correction in a high-ambient space is a common design error that surfaces as a thermal failure or an inspection rejection rather than a design RFI. {note}
+
+## The design ambient temperature for each feeder run shall be established from the actual installed environment and shall not be assumed to be 30°C (86°F) without verification.
+
+## Ambient temperature correction shall be applied to every feeder routed through a space whose maximum ambient exceeds 30°C (86°F).
+
+## Underground and wet-location conductors shall be wet-rated for the installed condition, including the effect of duct-bank thermal resistivity where applicable.
+
+```datasheet
+label: Design ambient temperature
+type: range
+unit: "°C"
+min: 30
+max: 55
+step: 5
+default: 30
+```
+
+```datasheet
+label: Installed location condition
+type: radio
+options:
+ - Dry, indoor conditioned
+ - Dry, high-ambient (mechanical room, attic, rooftop)
+ - Wet or damp location
+ - Underground in raceway
+ - Direct burial
+default: Dry, indoor conditioned
+```
+
+# Overcurrent Coordination {toc}
+
+## Conductor ampacity and overcurrent device rating are coordinated so that the conductor is protected at its corrected ampacity, with the limited next-standard-size allowance recognized for devices 800 A and below. {note}
+
+## The corrected ampacity of the conductor shall equal or exceed the rating of the overcurrent device protecting it, except as permitted by the next-standard-size rule of NEC 240.4(B).
+
+## The next-standard-size rule shall not be applied to overcurrent devices rated above 800 A.
+
+## Tap conductors shall be sized and protected in accordance with the applicable feeder tap rules of NEC 240.21(B) and shall be no smaller than the tap rule permits.
+
+## Where a feeder supplies multiple subpanels, the overcurrent coordination for each downstream device shall be verified against the upstream device per the coordination study, if one is required for the project.
+
+# Neutral and Grounded Conductor {toc}
+
+## The grounded (neutral) feeder conductor is sized for the maximum unbalanced load, but never smaller than the minimum equipment-grounding-conductor size of NEC Table 250.122 for the overcurrent device rating. {note}
+
+## A reduced neutral is permissible for predominantly linear loads, but nonlinear loads such as variable-frequency drives and electronic equipment drive third-harmonic current that adds on the neutral and warrants a full-size or oversized neutral. {note}
+
+## Sizing a reduced neutral on a feeder that serves significant nonlinear load is a recurring error that produces neutral overheating; the harmonic content shall be evaluated before reducing the neutral. {note}
+
+## The grounded (neutral) conductor shall be sized for the maximum unbalanced load calculated under NEC 220.61.
+
+## The grounded (neutral) conductor shall not be smaller than the equipment grounding conductor size required by NEC Table 250.122 for the feeder overcurrent device.
+
+## A full-size or oversized neutral shall be provided where the feeder serves significant nonlinear load that produces third-harmonic neutral current.
+
+```datasheet
+label: Neutral conductor sizing
+type: radio
+options:
+ - Full-size neutral (equal to phase)
+ - Reduced neutral (per NEC 220.61, linear load)
+ - Oversized neutral (harmonic / nonlinear load)
+default: Full-size neutral (equal to phase)
+```
+
+# Parallel Conductor Assemblies {toc}
+
+## Paralleling distributes a single phase across two or more conductors per phase, and becomes the practical configuration for feeders of roughly 400 A and above where a single conductor would be unwieldy or unavailable. {note}
+
+## Parallel conductors are permitted only in sizes of 1/0 AWG and larger; conductors smaller than 1/0 AWG shall not be paralleled regardless of the load calculation. {note}
+
+## For the parallel set to share current equally, all conductors of a given phase must be identical, and the same is required of the neutral set; any difference in length, material, or termination forces an unequal current split and localized overheating. {note}
+
+## Specifying parallel conductors smaller than 1/0 AWG, or allowing unequal conductor lengths between parallel raceways, are recurring field problems that the specification shall foreclose explicitly. {note}
+
+## Conductors shall be paralleled only in sizes of 1/0 AWG and larger.
+
+## All conductors of each phase in a parallel set shall be the same length, the same conductor material, the same insulation type, the same cross-sectional area, and shall be terminated in the same manner.
+
+## The neutral conductors of a parallel feeder shall themselves be paralleled and shall meet the same equal-length, material, insulation, and termination requirements as the phase conductors.
+
+## Where parallel conductors are installed in separate raceways, each raceway shall contain one conductor of each phase and the associated neutral so that the magnetic fields balance.
+
+```datasheet
+label: Conductors per phase
+type: select
+options:
+ - 1 (single conductor per phase)
+ - 2 parallel
+ - 3 parallel
+ - 4 parallel
+default: 1 (single conductor per phase)
+```
+
+# Connectors, Lugs, and Splices {toc}
+
+## Connector selection follows the conductor material and the termination method; the two dominant families are mechanical set-screw connectors and compression (crimp) connectors, each listed for specific conductor materials and ranges. {note}
+
+## Mechanical set-screw connectors and connector blocks are field-adjustable and common for service-entrance taps; compression lugs give a permanent, low-resistance termination preferred for switchgear and panelboard bus connections. {note}
+
+## A direct aluminum-to-copper connection requires a connector listed and marked AL/CU; using a copper-only lug on an aluminum conductor causes a high-resistance joint that overheats and fails, and is a leading cause of service fires. {note}
+
+## Compression terminations must be made with the matching die and crimp count from the connector's listing; a connector crimped with the wrong die is not a listed termination. {note}
+
+## Connectors and lugs shall be listed to UL 486A-486B and shall be marked for the conductor material on which they are used.
+
+## Splicing connectors shall be listed to UL 486C for the splice or tap application in which they are used.
+
+## Connectors used on aluminum conductors, and connectors joining aluminum to copper, shall be marked AL/CU.
+
+## Copper-only connectors shall not be used on aluminum conductors.
+
+## Compression connectors shall be installed with the die, crimp count, and tooling specified in the connector manufacturer's listing.
+
+## The conductor size selected for each termination shall fall within the listed conductor range of the lug; where it does not, an oversized-lug kit shall be specified rather than forcing the conductor into an undersized lug. {note}
+
+```datasheet
+label: Termination connector type
+type: radio
+options:
+ - Compression (crimp) lug
+ - Mechanical (set-screw) connector
+default: Compression (crimp) lug
+```
+
+```datasheet
+label: Connector material rating
+type: radio
+options:
+ - AL/CU rated (aluminum or copper)
+ - Copper only
+default: AL/CU rated (aluminum or copper)
+```
+
+# Termination Torque {toc}
+
+## Every mechanical and compression-mechanical termination is tightened to the manufacturer's published torque using a torque-indicating tool; both under-torque and over-torque produce high-resistance, overheating joints and are a leading cause of service failures and fires. {note}
+
+## NEC 110.14(D) requires terminations to be torqued to the value indicated on the equipment or in the manufacturer's instructions, applied with a calibrated torque tool; typical values range from about 250 in-lb for 4/0 AWG copper to about 600 in-lb for 600 kcmil. {note}
+
+## Terminations shall be tightened to the torque value published by the connector or equipment manufacturer.
+
+## Torque shall be applied with a calibrated torque-indicating tool in accordance with NEC 110.14(D).
+
+## Torque-tool calibration shall be current at the time of termination and the calibration record shall be available for review.
+
+## Each service and feeder termination shall be torque-verified and the result recorded for the closeout submittal.
+
+```datasheet
+label: Torque verification method
+type: radio
+options:
+ - Torque-indicating wrench (calibrated)
+ - Torque screwdriver (calibrated)
+default: Torque-indicating wrench (calibrated)
+```
+
+# Routing and Bending Radius {toc}
+
+## Large conductors have a minimum bend radius that, if not respected, damages the insulation and the strand geometry; for non-shielded conductors this is typically eight times the overall conductor diameter. {note}
+
+## Conductor routing, raceway placement, and pull-box locations are shown on the drawings because they are spatial arrangements that can never be reduced to a datasheet field. {note}
+
+## Conductors shall not be bent to a radius smaller than the minimum bend radius published by the conductor manufacturer, and in no case smaller than eight times the overall conductor diameter for non-shielded conductors.
+
+## Conductor pulling tension and sidewall pressure shall not exceed the manufacturer's published limits; pulling lubricant listed for the conductor jacket shall be used on long or congested runs.
+
+## Service and feeder conductors shall be routed as shown on the drawings [[drawing: feeder routing plan]].
+
+## Pull boxes and junction boxes for service and feeder conductors shall be located as shown [[drawing: pull-box locations]].
+
+# Testing {toc}
+
+## Acceptance testing confirms conductor continuity and insulation integrity before energization; leaving these criteria out of the specification is a common omission that produces disputes at closeout. {note}
+
+## Insulation resistance is measured with a megohmmeter (megger) applied at a DC test voltage appropriate to the conductor rating; a 600 V conductor is typically tested at 500 V DC, with a minimum acceptable value of 1 MΩ per 1000 V of test voltage. {note}
+
+## Each service and feeder conductor shall be tested for continuity and correct phase identification before energization.
+
+## Each service and feeder conductor shall be tested for insulation resistance with a megohmmeter before energization.
+
+## The insulation resistance test voltage shall be appropriate to the conductor voltage rating, and the measured insulation resistance shall be not less than 1 MΩ per 1000 V of applied test voltage.
+
+## Conductors that fail to meet the minimum insulation resistance shall be investigated and repaired or replaced before energization.
+
+## Test results, including test voltage, duration, and measured values, shall be recorded and submitted as a closeout document.
+
+```datasheet
+label: Insulation resistance test voltage
+type: radio
+options:
+ - 500 V DC
+ - 1000 V DC
+default: 500 V DC
+```
+
+```datasheet
+label: Minimum acceptable insulation resistance
+type: range
+unit: "MΩ"
+min: 1
+max: 100
+step: 1
+default: 1
+```
+
+# Installation {toc}
+
+## Conductors shall not be installed in a raceway until the raceway is complete, secured, swabbed clean, and free of moisture and debris.
+
+## Conductors shall be installed with the pulling means and lubricant specified, and shall not be subjected to tension or sidewall pressure exceeding the manufacturer's limits.
+
+## Each conductor shall be identified at every termination, splice, and pull point by phase, feeder designation, and where required by color code consistent across the project.
+
+## Where ambient or bundling conditions at the actual installed location differ from those assumed in design, the Contractor shall notify the Engineer of Record before installation so the conductor size can be re-verified.
+
+## Splices and taps shall be made only in accessible enclosures using listed connectors, and shall not be made within conduit bodies that are not listed for splicing.
+
+# Delivery, Storage, and Handling {toc}
+
+## Conductors shall be delivered on reels or in cartons with the manufacturer's labeling intact, identifying type, size, voltage rating, and temperature rating.
+
+## Conductor reels shall be stored on a clean, dry surface, protected from physical damage, and protected from prolonged exposure to sunlight unless the insulation is sunlight-resistant.
+
+## Conductor ends shall be sealed against moisture entry during storage and during interruptions in pulling.
+
+# Warranty {toc}
+
+## The Contractor shall warrant the service and feeder conductor installation, including terminations, against defects in material and workmanship for a period of not less than one year from the date of Substantial Completion.
+
+## Termination failures attributable to incorrect torque, incorrect connector selection, or aluminum-to-copper connection without AL/CU-listed connectors shall be corrected at no cost to the Owner within the warranty period.
+
+```datasheet
+label: Warranty period
+type: range
+unit: "years"
+min: 1
+max: 5
+step: 1
+default: 1
+```
+
+# Spare Parts {toc}
+
+## The Contractor shall turn over to the Owner any unused full reels and the manufacturer's product data for the conductor types and connectors installed.
+
+## Where the project documents require attic stock, the Contractor shall provide spare connectors and lugs of each type and size used on service and feeder terminations.
+
+```datasheet
+label: Spare connector stock (each type/size)
+type: range
+unit: "%"
+min: 0
+max: 10
+step: 1
+default: 0
+```