• Welcome to The Building Code Forum

    Your premier resource for building code knowledge.

    This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.

    Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.

    Ready to upgrade? Log in and upgrade now.

design temperatures

  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...
    • jar546
    • Thread
    • design temperatures nec 310.15 nec 310.15(b)(3)(c) roof conduit roof wiring
    • Replies: 13
    • Forum: Electrical Codes
Back
Top