A disconnecting means that serves a hermetic refrigerant motor-compressor shall have an ampere rating of at least ____% of the nameplate rated-load current or branch-circuit selection current, whichever is greater.
a) 80
b) 100
c) 115
d) 125
See answer and applicable Code reference
The correct answer is: c) 115
Air-conditioning and refrigeration requirements can be found in Art. 440 of the 2011 NEC. The rules for disconnecting hermetic refrigerant motor-compressors are noted in Part II of this Article. More specifically, as outlined in Sec. 440.12(A)(1), "The ampere rating shall be at least 115% of the nameplate rated-load current or branch-circuit selection current, whichever is greater."
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