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Home My WebLink AboutZ-6659 Map 7M -RICAL SPECIFICATIONS 1. General Box All electrical work shall be performed in accordance with local, state and national codes and standards, including but not limited to: no. PG2436CA00 with telephone logo * The National Electrical Code (NFPA 70 - latest edition) * The National Electrical Safety Code (ANSI C-2, latest edition) * The Life Safety Code (NFPA 101 - latest edition) 2. Conduit 2" Rigid galvanized schedule 40 conduit shall be used for exterior installation 2" EMT with compression type fittings shall be used for interior installation 4" PVC schedule 40 (check with respective utility companies to insure conformance with local requirements) shall be used for direct burial only. Reduced type and size of conduit for entry into panels will be specified on drawings. 3. Wiring Feeders Minimum size conductors shall be #1/0 or #3/0 (based on required amperage) type THWN, THW, or XHHW with no reduction in the neutral conductor. Minimum size grounding conductor shall be #2 AWG. The electrical engineer shall be responsible for performing voltage drop calculations and sizing feeders accordingly. Sub -feeders Minimum size conductors for 100 amp sub -feed shall be #3 AWG with no reduction in the neutral conductor. Minimum size grounding conductor shall be #2 AWG. Branch Circuits Minimum wire size #12 AWG THHN or THWN. All branch circuits shall carry a full size ground conductor; conduits shall not be used as a grounding conductor. A separate neutral shall be run for each branch circuit. All branch wiring shall be installed in a raceway; no romex or bx type wiring shall be permitted. Terminations All conductor lug/terminations shall have anti -oxidant applied All spring type wire connectors used in exterior boxes will be silicone filled. All terminations requiring flexible connections shall be done in 1" liquid tight metal conduit. 4. Metering All sub -meters will be of the Watt -watcher odometer type. The local utility company shall meter all new service. 5. Junction Boxes All outlet and junction boxes shall be 4" square minimum 6. A/C Power Distribution Panel boards will be Square D or General Electric. All panels shall have copper bus components; no aluminum components will be accepted. They will be main breaker type, with an isolated neutral and have a full size equipment ground bar. A 150 -amp main distribution panel shall be provided with the following characteristics: 208/240 VAC, single phase, 4 wire, 12 conduit (20 space), with NEMA 3R locking enclosure. Branch circuits will be numbered and labeled on inside access panel. Fusible Disconnect A Square D or General Electric service rated fusible disconnect switch with the following characteristics will be used: 150A (125A fused) 208/240 VAC 1 phase 22,000 AIC rated 7. Lighting Exterior lighting: Day -Brite #11W -150-G; 120V Glass and metal cage waterproof fixture with 100 watt bulb. Interior lighting: General Electric or Sylvania; 120V, 4'-2 Lamp surface mounted fixtures with wrap around acrylic lenses 8. Keyed Switches 20A, 120 VAC Hart Arrow # 1 191 LGRY with 7420 plate. 2000 series key. TELCO REQUIREMENTS 1. Conduit 1 1/4!' rigid galvanized steel; schedule 40 shall be used for all exterior installation. 1 1/4" EMT with setscrew type fittings shall be used for all interior installation. 4' PVC schedule 40 (minimum) shall be used for all direct burial (check with respective Telephone Company to insure conformance with local requirements). 1" liquid tight flexible metal conduit shall be provided from the telco box to the equipment cabinet for rooftop installations. 1" PVC conduit shall be provided from the telco box below grade to the equipment cabinet for cabinet on grade installation. Nylon bond bushings shall be provided at all open ends of conduits to protect nicking/cutting of telco cable. Nylon pull strings will be provided in all telco conduits. 2. Telco Cable One (1) - 4 pair, 24 gauge, separately shielded copper conductors for the receive side of the T-1 span shall be installed. Ore (1) - 6 pair, 24 gauge, separately shielded, copper conductor for the transmit side of the T-1 span shall be installed. 15 ft. of telco cable will be newly coiled and secured at the T-1 end of the conduit for installation use by the local Telephone Company. The cable shall be clearly tagged to identify ownership by Telecorp. 3. Telco Box A Hoffman 36% 30% 12" NEMA 4R rated telco box shall be installed unless local telephone company requirements differ. (Check with respective telco jurisdiction before installation). For interior telco box installation a 4'x 4'x 3/4', plywood backboard will be installed. 4. Service Box 38 x 26 x 24 Quasite composite service box (part no. PG2436BB24) include locking cover with logo (part no. PG2436CA00 with telephone logo #43) 5. Cabinet on Rooftop Telephone service shall be run in 11/4" conduit from the existing building MPOP and terminated in a weatherproof telco box mounted on the panel backboard, which is mounted to the equipment platform. The telco box shall have a dedicated duplex receptacle and telephone smart jack mounted inside. A 1" liquid tight flexible metal conduit shall be provided from the telco box to the equipment cabinet for telephone service. GROUNDING 1. Ground Bars Main Ground Bar Harger (or equal) 1/4" x 4' x 20" copper ground bar, 27 pre -drilled 7/16" holes with insulators and brackets (part no. GBI14420C). Sector Bus Bar Harger (or equal) 1/4" x 2" x 15" copper ground bar, 24 pre -drilled 7/16" holes with insulators and brackets (part no. GBI14215TES). 2. Grounding Wire All ground wire will be #2 stranded and green insulated with the exception of the home run. The home run will be #2/0 up to 500 ft. After 500 ft. it will increase to #4/0. 3. Grounding Lugs With the exception of the grounding kits, all lugs will be long barrel compression lugs, with 3/8" holes. All lugs shall be double crimped. 4. Grounding Kits All ground kits shall be Cablewave with 2 -hole crimp -on lug and 3 ft. tails. All lugs will be double crimped. 5. Ground Rods Ground Rods shall be Harger (or equal) 5/8" x 10' copper -clad steel. In cases where sufficiently low ground resistance cannot be attained such as driving deeper rods, XIT or Chem -rod chemical rods shall be used. 6. Grounding Clamps Two clamps will be provided for grounding to the water main on rooftop sites. T&B and SEPCO clamps (or approved equal) shall be used. 7. Compression Taps C -Type copper compression taps shall be used when connecting copper conductors. Compression taps will be applied using a mechanical crimping tool. Aluminum taps will not be accepted. 8. Resistance All terminations shall be grounded to an approved main ground source (i.e. water main, ground ring) with a maximum resistance of 5 ohms. 9. Connections A good connection insures that the ground conductor connection point is clean and free from oxidation. The two must meet bare metal to bare metal with a protective coating of NO -OX (or equal) to prevent future oxidation. All connecting hardware shall be secured tight to prevent loosening due to mechanical or chemical reaction. 10. Bolted Connections Properly removed paint, clean and apply an anti -oxidant to all mating surfaces when using lug type bolt connections. Use proper size bolts and compression fittings for all mechanical type connections. All connection hardware shall be stainless steel. All fasteners should be of the bolt, nut and self-locking washer type (self -tapping screws shall not be used). 11. Exothermic Welds (Cadwelds) All conductors/surfaces to be exothermically welded shall be clean and dry to insure proper bonding of materials. All ground connections to antenna masts, antenna skids, fence posts, panel backboards, ice bridge post, platforms, and monopoles shall be exothermically welded. All above ground welds shall be parallel type. Below grade welds (i.e. ground ring) shall be T or X type connections. All welds shall be clean and complete. Welds shall receive an approved zinc cold galvanizing application. 12. Coax Cable Grounding The sector bus bar will be attached to the Ice Bridge with standoff brackets and insulators. Each antenna sector shall have a sector ground bus that is grounded to the main bus bar via #2 stranded, green insulated wire. The ground wire from the sector bus to the main will be run parallel to the ice bridge with attachments to the sleepers utilizing nylon straps with eyelets for bolt, self-locking washers and nut. Grounding kits shall be installed within 10' of the antenna. Additional ground kits will be installed for every 200' of cable. 900 S. SHACKLEFORD SUITE 600 LITTLE ROCK, AR 72211 OFFICE- (501) 312-2455 4A GEM ENGINEERING COMPi 10970 Standiff Houston, Texas 77099-4206 Phone(281) 561-9225 Fax (281) 561-9399 PROJECT NON LTR002B DRAWN BY- GVS CHECKED BY- TA/HM SUBMITTALS DATE DESCRIPTION REV. 4-29-98 PERMIT ARKANSASIN REGIST, RED QFII I ¢fa�1Rpoo9e, zR•48 osri�iril SCALES 0 1/2 1 2 1 ii 1 i 1 GRAPHIC SCALE IN INCHES LTRO02B CI Iir��il;T 600 INTERSTATE 30 LITTLE ROCK, AR 72202 SHEET TITLE ELECTRICAL SPECIFICATIONS SHEET NUMBER SHEET 6 OF 6 SHEETS