Explanation: As noted in Sec. 450.13(B) of the 2020 NEC, transformers placed in hollow spaces must be no larger than 50kVA. Lupacchino is a senior design engineer with Gaylor Electric, Inc. in ...
Explanation: In the 2020 NEC, a new sentence was added to the end of Sec. 450.9. It reads as follows: "Transformer top surfaces that are horizontal and readily accessible shall be marked to prohibit ...
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