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C. MATERIALS <br />Page 12 of 13 <br />c. ELEC ICAL tin C! TUBING (EMT) : For interior use only. Cold rolled <br />steel, zinc coating outside, protective enamel coating inside. Fittings <br />shall be Tcanic, Socks, or equal; or cxaTpression ring, concrete tight type <br />with steel nuts. Set screw type of fittings are not acceptable. <br />d. PROTECTIVE CM=: Install protective coating on rigid steel conduits in <br />direct contact with earth or fill, consisting of two (2) layers of 0.010" <br />thick PVC or polyethylene tape, Johns -Manville #E-12 and #VID-10, Chase <br />#750, or equal, and protective overwrap, American Sisal raft #207, Chase <br />#770, or equal. Install tape and overwrap with 1/2" minimum lap. <br />e. RIGID PVC CONDUIT: <br />,. <br />1. Schedule 40 rigid polyvinyl chloride electrical conduit, listed by UL <br />for direct underground burial, manufactured from high impact, non- <br />conducting, self extinguishing material. <br />2. COUPLINGS, ADAPTERS, EXPANSION FITTINGS: Conform to same requirements <br />as rigid PVC conduit. Use solvent cement for all PVC joints, as <br />reo=mended by conduit manufacturer. <br />3. BENDS: Factory made rigid steel quit bends; PVC conduit bends not <br />acceptable. <br />2. EXPLOSION -PROOF JUNCTION BOX: Cross -Hinds #EGJ 422, or GUB02, or equal, for <br />flush installation in concrete pump island of gasoline service station. <br />Provide sealing hubs, plugs, and conduit seals as indicated and as required by <br />Code. <br />3. EXPLOSION -PROOF CONDUIT SEALS: Appleton, Crouse -Hinds, or equal, with <br />manufacturer's approal , ccm pound . <br />4. WIRE: For ordinary dry and wet locations: Type THM copper, marked per UL and <br />bearing their label. Minimum size shall be #12 AWG. <br />5. ISLAND POWER KILL SWITCH: 60A 3P, safety switch, non -fusible, NEMA3R enclosure, <br />Westinghouse, Square D, or equal. <br />6. C== BRX-M<ERS : Furnish and install additional circuit breakers of amperage <br />as specified. Furnish mounting hardware as required. <br />D. INS`rAT r =ON <br />1. CONDUIT SYSTEM: <br />a. Install wiring in rigid steel conduit in above ground outdoor locations, and <br />EMT quit may be used indoors. <br />b. Support conduits indoors by approved straps or hangers and install conduits <br />straight and true with respect to each other and adjacent construction. <br />6.23 <br />