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nec 310.15

  1. jar546

    Wire in Conduit on a Roof

    Riddle me this: You have 3 WR GFCI duplex receptacles on a single 20A circuit that serves mechanical equipment on a roof. The conduit is on stands approximately 8" above the roofline. The area has a design temp of 91F as verified by the 2% ASHRAE design temp for June-July & August. What size...
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