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DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

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D. Securely mount raceway using manufactured supports, connectors, and securing devices. Supportnonmetallic conduit with straps and clamps.E. Make transitions between nonmetallic conduits and metallic boxes with manufacturer's standardadapters designed for such purpose.F. Clean raceway before pulling in conductors. In raceway without wiring, install nylon pull stringof minimum 100-pound strength, allowing 12 inches excess at each end.G. Underground conduit shall have watertight joints.H. Install conduit following manufacturer's recommendations. Backfill from tie-in point toward endof conduit run.I. Grout around conduit tie-ins entering vault. Where conduit enters vault, seal openings withapproved duct seal to prevent circulation of air or moisture.J. Minimum depth to top of underground conduit shall be in accordance with N<strong>EC</strong> Tables 300-5 and710-4(b).K. Install nylon pull cords of 100-pound test in all spare conduit.3 .2 WIRE AND CABLEA. Install all single conductor THHN/THWN interior wire and cable in raceways.B. Feeder and Branch Circuit Equipment Grounding Conductor: Section 16060.C. Taps and Splices: Permitted only in junction or outlet boxes. Use only copper insulated-wireconnectors, bolted and taped connectors, or crimp connectors.3 .3 WIRING DEVICES, OUTLET AND JUNCTION BOXESA. Remove fiber washers on mounting screws before installing device. Ground receptacles to metalboxes with green grounding jumpers. Mounting and terminal screws shall be tight.B. Firmly attach plates, plumb and level.3 .4 METAL FRAMINGA. Install the above ground electrical enclosure and support on metal framing, bolt together, andbrace as required to form a rigid structure.B. Clean cuts and welds. Coat unpainted surfaces with cold application zinc galvanizing. Coat cutsand welds on painted surfaces with zinc chromate primer and finish to match existing paint.3 .5 INDIVIDUALLY ENCLOSED CIRCUIT BREAKERS AND SWITCHESA. Install with top of enclosure between 54 inches and 78 inches above ground.3 .6 S<strong>EC</strong>ONDARY LIGHTNING PROT<strong>EC</strong>TORA. Install on line side of main disconnects on main disconnect enclosures. Bond grounding wire tomain grounding electrode conductor. Install according to manufacturer's recommendations.16050-505/08 BASIC MATERIALS AND METHODS

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