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SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam

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A 200-ampere feeder supplies a single panelboard in a Sumter warehouse. The ungrounded conductors are 4/0 AWG aluminum THWN, which Table 310.16 lists at 180 A in the 75°C column. What is the largest standard overcurrent device 240.4(B) permits for these conductors?
Correct Answer:
200 A

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