SECTION 26 27 26

WIRING DEVICES

 
PART 1 - GENERAL

 

SCOPE

This section describes the products and execution requirements relating to furnishing and installing wiring devices and related systems for the project. Included are the following topics:

 

PART 1 - GENERAL

              Scope

              Related Work

              Submittals

              Operation and Maintenance Data

PART 2 - PRODUCTS

              Modularly Connected (Modular) Devices

              Wall Switches

              Receptacles

              Tamper-Resistant Receptacles

              Motion Sensors (Occupancy and Vacancy)

              Emergency Lighting Control Units (ELCUs)

             Device Plates and Box Covers

              Photocells

PART 3 - EXECUTION

              Installation

              Field Quality Control

              Motion Sensors

              ELCU Wiring

              Adjusting

 


SUBMITTALS

Provide product data showing model numbers, configurations, finishes, dimensions, and manufacturer's instructions.

 For motion sensor shop drawings, the manufacturer’s actual layout of motion sensors and the wiring diagrams shall be provided.

 
OPERATION AND MAINTENANCE DATA

All operations and maintenance data shall comply with the submission and content requirements specified under section GENERAL REQUIREMENTS.

 

PART 2 - PRODUCTS

 
MODULARLY CONNECTED (MODULAR) DEVICES:

Modularly connected devices are allowed, but not required.

 
Modular Pigtailed Connector:Polarized connector with minimum six-inch stranded copper wire leads, polycarbonate right-angle housing, UL498 listed, with finger-safe connector housing which provides insulation from conductive surfaces. Contacts shall be brass. Connector shall be manufactured so that it provides a secure connection such that it will maintain contact with the device until the device is removed for replacement. Modular connectors shall be provided with covers which protect the contacts from paint, drywall mud, and construction dust and debris. Connectors shall be Hubbell SNAPConnect, Leviton Lev-Lok, Pass & Seymour PlugTail, or approved equal.

 
WALL SWITCHES

General: Heavy duty use toggle switch, rated 20 amperes and 120/277 volts AC. Switches shall be UL20 Listed and meet Federal Specification WS-896. All switches shall be heavy duty Specification Grade.

Handle: [White] [_____] made of nylon or high impact resistant material.

All switches on emergency circuits shall have a red handle with matching red cover plate.

Wall Switches for Lighting Circuits and Motor Loads Under 1/2 HP: All switches shall be back- and side-wired, screw clamp type, suitable for solid or stranded wire up to #10 AWG, with separate green ground screw. Switches shall be as follows:

Hubbell 1221*,

Leviton 1221-S*,

Pass & Seymour CSB20AC1-*, or approved equal. (* indicates color selection).

Modular Wall Switches for Lighting Circuits and Motor Loads Under 1/2 HP: Switches shall be as follows:

Hubbell SNAP1221*NA,

Leviton M1221-*,

Pass & Seymour PT20AC1-*, or approved equal. (* indicates color selection).

 
RECEPTACLES

General Requirements: NEMA Type 5‑20R, [ivory] [_____] nylon or high impact resistant face. Receptacles shall be UL498 Listed and meet Federal Specification WC-596. All duplex receptacles shall be heavy duty Specification Grade, 20 amp rated.

 Generally, all receptacles shall be duplex convenience type unless otherwise noted.

 All receptacles on emergency circuits shall have a red face with matching red cover plate.

 All receptacles designated as isolated ground shall have an isolated ground triangle imprint on the face of the receptacle.

 All receptacles installed in bathrooms, kitchens, and within 6 feet of the outside edge of sinks shall be GFCI type.

 All receptacles installed in outdoor locations, garages, rooftops, and in other damp or wet locations shall be GFCI type with a weather-resistant (WR) rating.

Convenience and Straight‑blade Receptacles: All receptacles shall be back- and side-wired, screw clamp type, suitable for solid or stranded wire up to #10 AWG, with a separate green ground screw. Receptacles shall be as follows:

Hubbell ,

Leviton,

Pass & Seymour, or approved equal. (* indicates color selection).

GFCI Receptacles: Duplex convenience receptacle with integral ground fault current interrupter meeting the requirements of UL standard 943 Class A, including self-test functionality and reverse line-load misfire function repeatability. GFCI receptacles shall be as follows:

Hubbell,

Leviton

Pass & Seymour or approved equal. (* indicates color selection).

 

GFCI Receptacles with a weather-resistant (WR) rating: Weather-Resistant duplex convenience receptacle with integral ground fault current interrupter meeting the requirements of UL standard 943 Class-A, including self-test functionality and reverse line-load misfire function repeatability. WR GFCI receptacles shall be as follows:

Hubbell GFR5362SG*,

Leviton GFWR2-*,

Pass & Seymour 2097TRWR*,

or approved equal. (* indicates color selection).

 

USB Charger and Duplex Tamper-Resistant Receptacles: Do not use combination duplex receptacles with USB chargers. Use duplex receptacles as required for the application and as specified herein. Use separate 4-port USB charging devices.

 

USB Charging Devices: Single-gang 4-port USB charging station. USB ports shall meet UL94 for 5V flammability rating, and shall comply with battery charging specification USB BC1.2. USB ports shall be compatible with USB 1.1/2.0/3.0 devices, including Apple products. USB ports shall be rated 5VDC, 4.2A minimum. Devices shall be as follows:

Hubbel,

Leviton,

Pass & Seymour or approved equal. (* indicates color selection).

Locking‑Blade Receptacles: As indicated on drawings.

 
Specific‑use Receptacle Configuration: As indicated on drawings.

Modular Convenience and Straight‑blade Receptacles: Receptacles shall be as follows:

Hubbell SNAP 

Leviton,

Pass & Seymour,  or approved equal. (* indicates color selection).

Modular GFCI Receptacles: Duplex convenience receptacle with integral ground fault current interrupter meeting the requirements of UL standard 943 Class A, including self-test functionality and reverse line-load misfire function repeatability. GFCI receptacles shall be as follows:

Hubbell,

Leviton,

Pass & Seymour, or approved equal. (* indicates color selection).

Modular GFCI Receptacles with a weather-resistant (WR) rating: Use back- and side-wired devices in lieu of modular weather-resistant rated GFCI receptacles.

Generally, all receptacles shall be duplex convenience type unless otherwise noted.

All receptacles on emergency circuits shall have a red face with matching red cover plate.

All receptacles designated as isolated ground shall have an isolated ground triangle imprint on the face of the receptacle.

All receptacles installed in bathrooms, kitchens, and within 6 feet of the outside edge of sinks shall be GFCI type.

 

MOTION SENSORS (OCCUPANCY and VACANCY)

General Requirements:All motion sensors shall be hardwired type; battery type shall not be permitted.

Sensors shall use either passive infrared, or if dual technology, passive infrared and passive acoustic sensing or passive infrared and ultrasonic sensing for detecting room motion.

Sensitivity shall be user adjustable or self-adjusting type.

The delay timer shall be adjusted within a range of 6 to 30 minutes by the contractor in the field. The sensor shall have a test mode for performance testing.

The test LED shall indicate motion.

Line voltage sensors are acceptable, especially in exposed ceiling areas where all wiring shall be installed in conduit, including low voltage cabling if power packs are used. Provide power pack as required for low voltage sensors.

See drawings for actual types of sensors.

Vacancy sensors shall allow for manual-ON and automatic-ON operation.

Motion sensors and power packs shall have five-year warranties.

Wall Mounted (Wall Switch Type): The unit shall fit in/on a standard single gang switch box.

Rated capacity: 600 watts minimum at 120 volts, 60 Hz; 1000 watts minimum at 277 volts, 60 Hz.

The sensor shall have two switches where dual-level lighting is required. The switch shall have manual override for positive OFF and automatic ON.

The area of coverage shall be approximately 180 degrees by 35-40 feet.

Low voltage cabling shall be plenum rated or installed in conduit in plenum-rated areas.

Auxiliary Contacts for HVAC Interlock: Provide auxiliary dry contacts for HVAC BAS interlock when required. Refer to the “Occ Sensor Interlock” column in the Air Terminal Schedule(s) on the HVAC drawings. When required, provide auxiliary contacts regardless if the motion sensors are line- or low-voltage.

The motion sensors and auxiliary contacts shall be wired such that the sensor still detects motion and controls the auxiliary contacts regardless if the light switch(es) are in the OFF position (e.g., the occupant has turned the lights OFF because there is enough daylight, but the occupant is still occupying the space, and the motion sensor senses the occupant and closes the auxiliary contacts for BAS input).

The BAS wiring to the auxiliary contacts shall be by the Division 23 contractor.

 

EMERGENCY LIGHTING CONTROL UNITS (ELCUs)

General Requirements: Emergency Lighting Control Units (ELCUs) shall automatically illuminate connected emergency lighting upon utility power interruption, regardless of room switch position or motion sensor state.

ELCUs shall be UL 924 listed.

 
Warranty shall be 5-year replacement warranty.

 Local room switch or lighting control shall turn both normal and emergency luminaires ON at the same time (no dedicated emergency room switch required).

 The ELCU shall have a minimum load rating of 20 Amps at 120V or 277V, 1800W Tungsten at 120V,

 1500W Tungsten at 277V, 1 HP, or general use 20 Amp circuits.

 The ELCU shall accept 120V or 277V, 60Hz Input & Output (voltage tolerance +/- 15%).

 The ELCU shall include emergency power and normal power indicator LEDs, and a manual test switch.

 The ELCU shall accept separate phases on the constant hot and switched hot inputs.

 The ELCU shall include high voltage input surge protection up to 50,000V.

 Load contacts shall be able to withstand 10 direct shorts while connected to a 20 Amp breaker without permanent damage.

 The ELCU shall not generate any objectionable electrical or mechanical noise.

 The ELCU shall have UL 94-VO or UL 94-5VA flame rating and be approved for installation above the suspended ceiling.

 Dimming Applications: The ELCU shall automatically illuminate connected emergency lighting to full brightness upon utility power interruption, regardless of dimmer or switch position or motion sensor state.

The ELCU shall be compatible with 2-wire, 3-wire, 0-10V, and DALI dimming systems and ballasts.

The same local room switch, dimmer, or lighting control shall dim both normal and emergency luminaires at the same level during normal operation.

 
DEVICE PLATES AND BOX COVERS

Decorative Cover Plate: [[White] smooth thermoplastic nylon.] [302/304 lined stainless steel.]


Weatherproof Cover: All receptacles installed in wet locations shall have an enclosure that is weatherproof whether or not the attachment plug is inserted. Covers shall be gasketed metal with hinged “in-use” device covers, powder coat painted. Non-metallic covers are not allowed. Covers shall be latching type and shall be lockable. Covers shall be identified as “extra-duty” type per NEC 406.9(B)(1).


Damp Location Cover: All receptacles installed outdoors in a location protected from the weather or in other damp locations shall have an enclosure that is weatherproof when the receptacle is covered (attachment plug not inserted and receptacle covers closed). Covers shall be gasketed metal with hinged device covers, powder coat painted. Non-metallic covers are not allowed.
 

Surface Cover Plate: Raised galvanized steel.

 

 PART 3 - EXECUTION

INSTALLATION

See plans for device mounting heights.

 
Install wall switches with OFF position down.

Wall dimmers: de-rate ganged dimmers as instructed by manufacturer; do not use common neutral.

 Install convenience receptacles with grounding pole on bottom.

Install box for information outlet at the same height as adjacent convenience receptacles. Locate boxes for information outlet as close as practical to duplex power outlet, approximately 2-inches apart.

Install box for telephone jack for wall telephone at 46-inches to center above finished floor.

Install specific‑use receptacles at heights shown on Contract Drawings.

Install decorative plates on switch, receptacle, and blank outlets in finished areas.

 

Install galvanized steel plates on outlet boxes and junction boxes in unfinished areas, above accessible ceilings, and on surface‑mounted outlets.

 

Install devices and wall plates flush and level.

 

Receptacles shall have a bonding conductor from grounding terminal to the metal conduit system. Self-grounding receptacles using mounting screws as bonding means are not approved.

 

FIELD QUALITY CONTROL

Inspect each wiring device for defects.

 

Operate each wall switch and sensor with circuit energized, and verify proper operation.

 

Verify operation of each ELCU by turning off the normal power circuit breaker at the panelboard.

 

Verify that each receptacle device is energized.

 

Test each receptacle device for proper polarity.

 

Test each GFCI receptacle device for proper operation.

 

The user agency and DFD personnel reserve the right to be present at all tests.

 

MOTION SENSORS

Power packs used in return air plenum ceiling areas shall be installed in an approved enclosure or UL listed for return air plenum.

Provide a minimum of 4’ of coiled cable for ceiling-mounted sensors.

Motion sensors shall be installed at locations indicated on the manufacturer’s submittal layout drawings. Sensors shall be located to prevent false “ON” tripping of the lights.

Sensitivity Test: After the sensor has been energized for at least 15 minutes, walk to the middle of the room (if conference room), or sit at the normal desk position (if an office). Make no motion for 20 seconds. Move one arm up and down slowly. The test LED should blink.

Time Delay Test: Set the time delay for 10 minutes. Walk into the room to activate the sensor then leave room. Sensor must turn lights off at approximately 10 minutes. Walk into the room again to reactivate the lights. Lights should activate within 1 second.

 
ELCU WIRING

For lights on emergency power without an emergency lighting control unit (ELCU), use the emergency circuit to energize the motion sensor’s power pack or Digital Load Controller. Route the emergency circuit through the motion sensor’s power pack or Load Controller’s relay to the light fixtures. Route any non-emergency circuits controlled by the same motion sensor/Load Controller through separate auxiliary relays/Digital Auxiliary I/O Interface Modules.

For lights on emergency power with an ELCU, route the normal power through the switches and motion sensor or Load Controller relay to the ELCU, then to the normal power lighting fixtures. Connect the emergency circuit to the ELCU’s emergency power terminals, then to the emergency lighting fixtures. The ELCU will control the emergency lighting along with the normal lighting controls, but will turn the emergency lights ON in a power outage, regardless of the position of the switches or Load Controller relays (ON or OFF).

 
ADJUSTING

Adjust devices and wall plates to be flush and level.

Mark all conductors with the panel and circuit number serving the device with a machine generated label, at the device, and on the back of the device cover.

 

END OF SECTION