NM Electrical Inspector (General) Practice Questions - New Mexico CID Electrical Inspector (General) Examination Exam

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A 100-ampere feeder uses 3 AWG THHN copper conductors landed on a panelboard whose terminals are not marked for 75°C. For termination temperature, which ampacity column must the inspector apply under NEC 110.14(C)(1)?

The 60°C column of Table 310.16 The 75°C column of Table 310.16 The 90°C column of Table 310.16 The 105°C column of the conductor insulation rating

Correct Answer:

The 60°C column of Table 310.16

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