Wiring Devices
Remake batch 25 and its neighbor re-points, batch 24 where missing, and the adopted-electrical-code parameter: brought in line with the authoring repository
Showing changes from Rev 8
to Rev 9
in Wiring Devices.
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title: Wiring Devices
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When to use: The receptacles, snap switches, wall-box dimmers, wall-box occupancy and vacancy sensors, and wall plates installed in outlet boxes on branch circuits rated 250 V and below and 60 A and below, in commercial, institutional, industrial, multifamily, and residential buildings. Covers device grade, the ampere rating and NEMA WD 6 configuration of receptacles, hospital-grade, isolated-ground, controlled, USB, surge-protective, locking, and special-purpose receptacles, the ground-fault and arc-fault devices installed at the outlet, tamper-resistant and weather-resistant devices and their covers, switch types and ratings, stand-alone dimmers and sensors with no connection to a control system, device color and plate material and finish, mounting height and orientation, terminations, device identification, field testing, warranty, and spares.
− Not intended for: The decision whether ground-fault or arc-fault protection is provided at the panelboard or at the outlet, and the breakers that provide it at the panelboard (see [[sync/panelboards]]); the branch-circuit conductors that supply the devices (see [[sync/conductors-and-cables]]); the outlet boxes, raceways, and surface raceways that house them (see [[sync/raceways-and-conduit]]); the equipment grounding conductor and the isolated grounding conductor each device terminates (see [[sync/grounding-and-bonding]]); floor boxes and poke-through devices and their covers (see [[sync/electrical-floor-boxes-and-poke-throughs]]); the electric vehicle supply equipment itself, whether cord-connected or hardwired (see [[sync/electric-vehicle-charging]]); rack power distribution units, busway plug-in units, and relocatable power taps (see [[sync/feeder-busway-plug-in-units]]); the stations, detectors, room controllers, and plug-load controllers of a lighting control system, and the means of operating controlled receptacles (see [[sync/lighting-controls]]); luminaires and their drivers (see [[sync/lighting-fixtures]]); permanently connected surge protective devices and point-of-use devices other than the receptacle form (see [[sync/surge-protective-devices]]); the branch arrangement and the receptacle count of a healthcare essential electrical system (see [[sync/healthcare-essential-electrical-systems]]); enclosed switches and motor disconnects (see [[sync/enclosed-switches-and-disconnects]]); temporary construction receptacles (see [[sync/temporary-facilities-and-controls]]); telecommunications outlets and jacks (see [[sync/structured-cabling]]); circuit directories and equipment nameplates (see [[sync/electrical-identification]]); pin-and-sleeve devices above 60 A; and devices in hazardous (classified) locations.
+ Not intended for: The decision whether ground-fault or arc-fault protection is provided at the panelboard or at the outlet, and the breakers that provide it at the panelboard (see [[sync/panelboards]]); the branch-circuit conductors that supply the devices (see [[sync/conductors-and-cables]]); the outlet boxes, raceways, and surface raceways that house them (see [[sync/raceways-and-conduit]]); the equipment grounding conductor and the isolated grounding conductor each device terminates (see [[sync/grounding-and-bonding]]); floor boxes and poke-through devices and their covers (see [[sync/electrical-floor-boxes-and-poke-throughs]]); the electric vehicle supply equipment itself, whether cord-connected or hardwired (see [[sync/electric-vehicle-charging]]); rack power distribution units, busway plug-in units, and relocatable power taps (see [[sync/feeder-busway-plug-in-units]]); the stations, detectors, room controllers, and plug-load controllers of a lighting control system, and the means of operating controlled receptacles (see [[sync/lighting-controls]]); luminaires and their drivers (see [[sync/lighting-fixtures]]); permanently connected surge protective devices and point-of-use devices other than the receptacle form (see [[sync/surge-protective-devices]]); the branch arrangement and the receptacle count of a healthcare essential electrical system (see [[sync/healthcare-essential-electrical-systems]]); enclosed switches and motor disconnects (see [[sync/enclosed-switches-and-disconnects]]); temporary construction receptacles (see [[sync/temporary-facilities-and-controls]]); telecommunications outlets and jacks (see [[sync/structured-cabling]]); circuit directories and equipment nameplates (see [[sync/equipment-labeling]]); pin-and-sleeve devices above 60 A; and devices in hazardous (classified) locations.
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- temporary construction receptacles and their ground-fault protection, under [[sync/temporary-facilities-and-controls]]
- telecommunications outlets, jacks, and faceplates, under [[sync/structured-cabling]]
−- panelboard directories, equipment nameplates, and system color coding, under [[sync/electrical-identification]]
+- panelboard directories and equipment nameplates, under [[sync/equipment-labeling]], and system color coding, under [[sync/electrical-identification]]
## Wiring devices shall comply with NFPA 70 Articles 404 and 406 and shall be listed and labeled by a Nationally Recognized Testing Laboratory for the use and the location in which they are installed.
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## A circuit number on the plate is what lets a technician find the breaker for a dead outlet without a tracer and what lets an occupant report the right circuit, and it costs a label per device; receptacle plates are marked on most projects that mark anything, switch plates less often because the switch is next to the load it controls, and a project that marks only the receptacles serving copiers, refrigerators, and other designated equipment marks the outlets that are reported most. An engraved plate is permanent and is ordered with the plate; a label on the face is applied in the field after the circuits are verified and is visible to the occupant; a label inside the plate is read by the technician who removes it and leaves the face unmarked for the architecture. {note}
−## The panelboard designation and circuit number marked on a plate shall match the panelboard directory under [[sync/electrical-identification]] and shall be applied after the circuit is verified at testing, not from the design drawings.
+## The panelboard designation and circuit number marked on a plate shall match the panelboard directory under [[sync/equipment-labeling]] and shall be applied after the circuit is verified at testing, not from the design drawings.
## A receptacle protected through the load terminals of an upstream ground-fault device, a controlled receptacle, and an isolated-ground receptacle shall carry the marking this standard and NFPA 70 406 require for it, in addition to any plate marking selected here.
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## Spare devices and plates shall be identical to the installed items in manufacturer, grade, configuration, color, and finish, shall be delivered in their original packaging, and shall be labeled with the device type and the area they serve.