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31604.DSK <br /> WP-SFO <br /> 2. - For abovegrade connections, provide exothermic-welded, <br /> compression, or brazed connectors. <br /> D. Equipment Grounding Connections: <br /> 1. Equipment shall have means for attaching a grounding conductor. <br /> Provide grounding means to conform to any of the following: <br /> a. A noncorrodable metal pad welded or brazed to the equipment <br /> frame having a threaded 318-inch hole at its center and a mating <br /> bronze cap screw and lockwasher. <br /> b. A tapered thread 318-inch hole in a flat surface of equipment <br /> frame, with a mating high-strength bronze post-type connector <br /> having threads coated with a corrosion .inhibiting compound. <br /> f <br /> C. A terminal connector attached to the equipment frame by a <br /> 318-inch bronze bolt, nut, and lockwasher. <br /> 2. Threaded holes shall have sufficient number of threads to insure a <br /> firm connection. All connections shall conform and meet all <br /> requirements of NEC Article 250. Connections shall be suitable for <br /> up to No. 410 AWG grounding conductors. <br /> 3. Connect junction boxes to the equipment grounding system with <br /> grounding clips mounted directly on the box or with 318-inch machine <br /> screws. Completely remove all paint, dirt, or other surface coverings <br /> at grounding conductor connection points so that good metal-to-metal <br /> contact is made, then refinish for corrosion protection. <br /> 2.16 LIGHTING AND POWER DISTRIBUTION PANELBOARDS <br /> A. General: Provide circuit breaker panelboards meeting standards established <br /> by UL, NEMA PB 1, and the NEC. Furnish panels with fully rated <br /> short-circuit current equipment rating. Series connected equipment ratings <br /> are not acceptable. <br /> B. Cabinets: Furnish NEMA 4X watertight and corrosion-resistant. Furnish <br /> boxes that satisfy National Electrical Code Section 373-6 (wire bending <br /> space sizing requirements} and are large enough to provide a wiring gutter <br /> space on both sides and top and bottom.. Provide multipoint locking devices <br /> for all doors over 30 inches in height. Key all locks.alike, and furnish two <br /> milled-type keys with each lock. Furnish.on door interior a metal directory <br /> frame with transparent plastic face and enclosed directory card. Furnish an <br /> engraved, laminated plastic nameplate screwed (no adhesives) to the cabinet <br /> exterior face indicating the panelboard designation, service voltage, and <br /> phases. Nameplates shall be white, engraved to a black core. <br /> PART 3 EXECUTION <br /> 3.1 GENERAL <br /> A. Unless specified otherwise, electrical equipment and anchoring systems <br /> shall be designed to withstand seismic forces. <br /> B. Install materials and equipment in a workmanlike manner utilizing <br /> craftsmen skilled in the particular trade. Provide work which has a neat <br /> and finished appearance. Carry out work in accordance with NECA <br /> Standard of Installation. <br /> BAE31604.AS.T 1 <br /> 16005 6 ELECTRICAL SYSTEM <br />