A new exception to the lighting load calculation requirements has been made to more closely reflect reality. Article 220 Branch-Circuit, Feeder, and Service Calculations Part II. Branch-Circuit Load Calculations 220.12 Lighting Load for Specified Occupancies. The general lighting load specified in Table 220.12 must be calculated from the outside dimensions of the building or area involved. Exception: Where the adopted energy code requires a smaller value for lighting loads, the ...

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