SECTION 16420 - ELECTRICAL EQUIPMENT PART 1 - GENERAL 1.01 RELATED DOCUMENTS The General Provisions of the Contract, including General, Supplementary and Special Conditions, apply to the work specified in this Section. PART 2 - MATERIALS AND METHODS 2.01 WIRING DEVICES A. GENERAL: All devices must be suitable for use intended, and have voltage and current ratings adequate for loads served. All devices shall have terminals designed for use with stranded wire. All receptacles shall have a grounded pole and green painted grounding screw. Grounded receptacles shall ground lug internally connected to mounting tabs. Wall outlets shall be installed with the ground pin down. Devices installed in or served through fire rated structures shall be fireproofed in a manner compatible with the U. L. fire rating. B. ACCEPTABLE MANUFACTURERS: Catalog numbers listed below are Hubbell, unless indicated otherwise. Equivalent items made by Arrow-Hart, Bryant and Leviton will be acceptable provided they meet specification requirements. C. CONVENIENCE OUTLET: (20 amp/125v/3 wire) HBL5362-Ivory D. GFI OUTLET: GFR5362IL. Ivory GFI outlets in the kitchen shall be P&S 2095-I only. E. SURGE SUPPRESSER OUTLET: IG5362ISA. F. ISOLATED GROUND (COMPUTER) OUTLET: IG5362- Orange G. TAMPER RESISTANT OUTLET: HBL8300SGIA H. SPECIAL DEVICES: Refer to Drawings, all specification grade. Provide matching cord and cap. I. PLATES: Provide Type 302/304 smooth stainless steel plates for all devices; provide combination and/or gangable plates where adjacently located multi-outlet assemblies are indicated on drawings which shall include multi-switch installations. Plates for surface mounted switch or outlet boxes shall be Sierra galvanized steel handy box plates (H series). Mounting screws shall be stainless steel. Jumbo plates are not acceptable. J. OUTDOOR COVERS: Electrical devices noted WP installed under canopies or other areas not subject to direct rainfall shall have aluminum self closing covers that are rated for wet location with cover closed. Devices subject to direct rainfall shall have Hubbell WP26M aluminum cover rated for wet location with cord connected to device. 16420 Electrical Equipment Page 1
K. FLOOR OUTLETS: For standard receptacles mounted in floors provide Wiremold 880 OMNI floor boxes. Provide cast iron, on-grade style for ground level floors, and fire rated steel type for above grade floors. Provide polished brass cover with hinged access openings. For furniture feed floor outlets provide Wiremold EFBFF-OG floor box with nickel colored aluminum cover assembly. Where power/av/data boxes are shown, provide Wiremold Evolution Series EFB6S, EFB8S or EFB10S as required. Box shall be OG for on grade locations or FC for above grade applications. Provide surface style cover with nickel colored aluminum assembly. Provide carpet insert style for carpeted areas. 2.02 LIGHTING PANELS A. GENERAL: Provide for panels 225 amps and smaller. Circuit breaker type; Square D Type NQOD for 120/208-240 Volts, NF for 277/480 Volts. Construction shall comply with NEMA and U. L. Standards. Panels and circuit breakers shall be listed for use with 75 C wiring. Mount panel with top of can at 72" above finished floor. All products shall be manufactured in the United States. B. CABINETS: Safety dead front type with front hinged trim to box with full length piano hinge and quarter turn fasteners; box made of code gauge galvanized steel; provide wire bending space per NEC Table 373-6; door with flush type combination lock and latch, all keyed alike. C. CIRCUIT BREAKERS: Plug in for 120/208-240 Volts, bolt in for 277/480 Volts; quick make, quick break, trip free, thermal magnetic trip; automatic tripping indicated by handle at midpoint position; multipole breakers to have common trip (handle ties are not acceptable). Minimum interrupting ratings shall be 14,000 Amps symmetrical at 277/480 Volts and 10,000 Amps symmetrical at 120/208-240 Volts. All main circuit breakers shall be rated 22,000 Amps minimum. Ratings as scheduled on drawings. Square D I-line construction with plug on breakers is acceptable for 277/480 Volts. Install circuit breakers in same order as shown on the drawings. Where spaces are noted, provide bus connectors and all other provisions necessary to add future breakers of any size and number of poles up to 100 amp and three poles. D. BUSSING: Tin plated copper sized in accordance with NEMA temperature rise standards and installed completely throughout panel for installation of future breakers where schedule shows space only. Lugs U. L. rated for Cu/Al terminations. Unless indicated otherwise on drawings, bus bracing shall be 22,000 Amps symmetrical. Panels with 24 or more circuits shall have a minimum of 225 Amp bussing. Provide a ground bar in the Service Entrance Equipment and in each electrical panel having a branch circuit ground wire. E. SURGE SUPPRESSION: Panels noted to have TVSS surge suppression shall include TVSS mounted inside panel. See Section 2.05 for specification. F. DIRECTORY: Complete at end of job, typewritten, stating equipment or rooms served by circuit. Type even circuits on right side of card, odd on left side. G. FINISH: Gray enamel over rust inhibiting treatment after fabrication and before assembly. After installation, and before acceptance by the Owner, assembly shall be painted with a rust inhibiting paint (color selected by Architect). Recessed cans may have galvanized finish. H. NAMEPLATES 1. Factory Nameplate: Provide information per industry standards but shall include voltage, phase, buss amperage and short circuit rating. 2. Field Nameplate: Provide lamacoid nameplate with 5/16" letters on front face showing panel name, amperage rating, voltage and upstream panel. Attach with mastic and two screws. Coordinate to give same name as shown on panelboard schedule. 16420 Electrical Equipment Page 2
Panel HA 225A MCB 277/480 Volts, 3 Phase, 4 Wire Fed from Panel DA 3. Identification of ungrounded conductors: Provide permanent label indicating the color coding of phase conductors based on voltage as noted below: 480/277 Volt Panel Phase A - Brown Phase B - Purple Phase C - Yellow 208Y/120 Volt Panel Phase B - Red 120/240 Volt Panel Phase B - Orange (high leg of delta) I. ACCEPTABLE MANUFACTURERS: General Electric, Siemens and Square D. 2.03 SWITCHGEAR TRANSIENT VOLTAGE SURGE SUPPRESSOR (TVSS) A. GENERAL: Provide TVSS equipment for electrical panels and equipment as noted on the Drawings. TVSS shall be installed inside the panel to be protected or in NEMA 1 housing and mounted adjacent to the equipment to be protected as indicated in the drawings. Connect TVSS to three pole circuit breaker in the panel with wiring as short and straight as possible. B. DISPLAY: Provide digital transient counter with battery backup. C. SUPPRESSION MODES: System shall provide suppression of L-L, L-N, L-G and N-G transients. D. RESPONSE TIME: 1 nanosecond or less. E. EMI/RFI ATTENUATION: 38 db or better. F. WARRANTY: 10 year, non-prorated replacement. G. TVSS RATING: 1. Panels 800 amps and smaller: 160 kamps per phase 2. Panels larger than 800 amps: 240 kamps per phase H. ACCEPTABLE MANUFACTURERS: General Electric, Siemens and Square D 2.04 SPECIAL EQUIPMENT TRANSIENT VOLTAGE SURGE SUPPRESSOR (TVSS) A. GENERAL: For certain 120 volt circuits provide TVSS protection at the protected device. 16420 Electrical Equipment Page 3
B. INSTALLATION: Install device in junction box surface mounted in mechanical rooms or above accessible ceiling if equipment is not in mechanical room. The branch circuit shall terminate on the TVSS then subfeed the equipment. The wire between the device and the equipment shall be three to five feet long. C. TVSS: Ditek Model DTK-120SR surge suppressor D. EQUIPMENT PROTECTED: Install for fire alarm panel, security panel and CCTV panel. 2.05 TELEPHONE LINE TRANSIENT VOLTAGE SURGE SUPPRESSOR (TVSS) A. GENERAL: Install for telephone connections to fire alarm and security alarm dialers. B. TVSS: Ditek Model DTK-MRJ31XSCP-WP 2.06 DISTRIBUTION PANELS A. GENERAL: Provide for panels 400 amps and larger. Construction in accordance with NEMA standards. Panels and circuit breakers shall be listed for use with 75 C wiring. All products shall be manufactured in the United States. B. CABINETS: Panelboard assembly shall be safety dead front type, enclosed in a code gauge steel cabinet with removable endwalls. Fronts shall be of code gauge, full-finished steel with rust-inhibiting primer and baked enamel finish. Provide locking door with front hinged trim to box with full length piano hinge and quarter turn fasteners, unless panel is located in a mechanical room. Provide the largest cabinet available for the ampacity panel schedules. C. BUSSING: Bus structure and main lugs shall have current ratings as shown on the panelboard schedule. Such ratings shall be established by heat rise tests with maximum hot spot temperature on any connector or bus bar not to exceed 50 degrees C rise above ambient. Heat rise tests shall be conducted in accordance with Underwriters' Laboratories Standard UL 67. Busses shall be tin plated copper braced for the scheduled fault current (50,000 amperes minimum). Bussing shall accept the largest circuit breaker available for the ampacity scheduled even though only smaller size CB's are listed. Where space only is shown, bussing shall allow any combination of 1, 2 and 3 pole circuit breakers of various frame sizes. D. CIRCUIT BREAKERS: Circuit breakers shall bolt in or have Square D I-Line plug on construction. Circuit breakers shall be equipped with individually insulated, braced and protected connectors. Tripped indication shall be clearly shown by the breaker handle taking a position between ON and OFF. Trip ratings of the circuit breaker shall be as shown on the panelboard schedule. All spaces shown shall include all buss connectors and any other provisions necessary for future breaker additions. Minimum 18,000 amperes interrupting capacity for circuit breakers 100A and larger. E. SURGE SUPPRESSION: Panels noted to have TVSS surge suppression shall include TVSS mounted inside panel. See Section 2.03 for specification. F. NAMEPLATES 1. Factory Nameplate: Provide information per industry standards but shall include voltage, phase, buss amperage and short circuit rating. 16420 Electrical Equipment Page 4
2. Field Nameplate: Provide lamacoid nameplate with 5/16" letters on front face showing panel name and amperage rating. Attach with mastic and two screws. Coordinate to give same name as shown on panelboard schedule. If used as main service panel provide short circuit available and rating information. Panel DA 800A MCB 277/480 Volts, 3 Phase, 4 Wire Fed from Main Switchboard MSB Main Switchboard MSB 2500A MCB 277/480 Volts, 3 Phase, 4 Wire SCCR: 100,000kA 3. Circuit Nameplate: For each circuit provide a lamacoid nameplate indicating load served and circuit breaker size. For spaces indicate maximum size circuit breaker that can be installed. Examples: Panel HA 400A/3P 225A/3P Space 3. Identification of ungrounded conductors: Provide permanent label indicating the color coding of phase conductors based on voltage as noted below: 480/277 Volt Panel Phase A - Brown Phase B - Purple Phase C - Yellow 208Y/120 Volt Panel Phase B - Red 120/240 Volt Panel Phase B - Orange (high leg of delta) G. ACCEPTABLE MANUFACTURERS: General Electric, Siemens and Square D. 2.07 TRANSFORMERS, DRY TYPE A. GENERAL: Provide U. L. labeled, plated copper or aluminum wound, two winding type units, suitable for location installed. Refer to Drawings for ratings. All products shall be manufactured in North America. B. TEMPERATURE RISE: Design shall use 220 C insulation and operate with a maximum temperature rise of 115 C above a 40 C ambient. C. TAPS: High voltage windings shall be provided with two 2½% taps FCAN and four 2½% taps FCBN. D. NOISE: The manufacturer shall properly isolate the core and coil from the enclosure with vibration isolation pads in order to minimize the transmission of vibration and noise. Noise levels shall not be more than NEMA and ANSI Standards. 16420 Electrical Equipment Page 5
E. IDENTIFICATION: Install lamacoid nameplate with 5/16" letters on front face showing transformer name, voltage and primary circuit number. Attach with mastic and two screws. Coordinate to give same name as shown on drawings. Example: Transformer XL 45 KVA 480V-208Y/120 Volts, 3 Phase, 4 Wire Fed from circuit DA-4 F. MANUFACTURERS: General Electric, Acme, Siemens and Square D. 2.08 FUSED AND SAFETY SWITCHES A. GENERAL: Provide disconnect switch for each UPS and other equipment required by the NEC, fusible or non-fusible as required and additionally as indicated on Drawings. Where motor circuit protective device is in the same room, within 50 feet of and in sight of the equipment, no additional switch is required; if those conditions do not prevail provide switch at the equipment and as indicated on Drawings. Equipment shall be listed for use with 75 C wiring. All products shall be manufactured in the United States. B. TYPE: Heavy duty switch sized for load served; non-fusible where used purely as disconnect device. Fused switches shall accommodate Class RK1 fuses. NEMA 1 enclosure for switches inside, NEMA 3R for switches outside unless noted to be NEMA 4X on the Drawings. Switches located in the kitchen area shall be NEMA 4X stainless steel. C. FUSES: Fuses to 600 amps shall be low peak, dual element, time delay fuses LPS Class RK1. Larger fuses shall Limitron KTU Class L fuses. Provide 10% spare fuses of each size, minimum of three per size. Install in cabinet in main mechanical room. D. NAMEPLATE: Provide each device with an engraved lamacoid nameplate (5/16" high letters) showing load served and circuit number. Attach with mastic and two screws. UPS for ICA 120/208 Volts, 1 Phase, 3 Wire Fed from circuit CPA-2 E. MANUFACTURERS: General Electric Type TH, Siemens and Square D. 2.09 ENCLOSED CIRCUIT BREAKERS A. GENERAL: Provide where shown on the Drawings. B. TYPE: Circuit breaker shall be selected to meet the short circuit requirements as listed on the Drawings. Mount in NEMA 1 or NEMA 3R enclosure to match application. C. NAMEPLATE: Provide each device with an engraved lamacoid nameplate (5/16" high letters) showing load served and circuit number. Attach with mastic and two screws. XFMR XCPA 480Y/277 Volts, 3 Phase, 4 Wire Fed from circuit DA-1 D. MANUFACTURERS: General Electric, Siemens and Square D. 16420 Electrical Equipment Page 6
2.10 NAMEPLATES In addition to the nameplate specified with the various equipment, provide the following engraved lamacoid nameplate with 5/16" high letters on each lighting panel, distribution panel and transformer: CAUTION DO NOT ADD OR MODIFY CIRCUITS WHILE ENERGIZED THIS PANEL IS POWERED FROM PANEL DA. Replace PANEL with TRANSFORMER as appropriate. Replace PANEL DA with the actual device as shown on the Drawings. END OF SECTION 16420 Electrical Equipment Page 7