NM CID EL-1 Practice Questions - New Mexico CID EL-1 Electrical Distribution Systems, Including Transmission Lines Examination Exam

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Six current-carrying 4/0 AWG copper THWN conductors are installed in one raceway in a 30 degree C ambient. Starting from the Table 310.16 75 degree C ampacity of 230 A, what is the adjusted ampacity after the NEC 2020 Table 310.15(C)(1) adjustment?

115 A 161 A 184 A 230 A

Correct Answer:

184 A

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