Enclosures and wiring methods must exclude ignitible quantities of fibers and flyings from their interiors, and must have controlled surface temperatures. Normally elevated surface temperatures are associated primarily with utilization equipment, and so long as wiring and conductors are properly sized and installed, the wiring methods themselveswiring methods themselves
Wiring methods, such as conduits and cables will not be significant heat sources if they are properly sized and installed to prevent overheating of conductors and insulation. will not produce excessive surface temperatures.

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