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IAEI Magazine | Author: John Stacey
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John Stacey

John Stacey, CMP-6

Focus on the Code

What’s Happening to Table 310.15(B)(7)?

In the 2011 NEC, does Table 310.15(B)(7) override any ampacity adjustment factors, such as temperature correction factors, or do any ampacity adjustment factors render Table 310.15(B)(7) noncompliant?

Sunlight, Conductors and Raceways on Rooftops

Let’s take a closer look at the NEC. The issue here is 310.10 that states, "No conductor shall be used in such a manner that its operating temperature exceeds that designed for the type of insulated conductor involved. In no case shall conductors be associated together in such, with respect to the type of circuit, the wiring method employed, or the number of conductors, that the limiting temperature of any conductors, that the limiting temperature of any conductor is exceeded.”