ND Electrician Practice Questions - North Dakota Journeyman Electrician License Exam

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According to NEC 450.3(B), what is the maximum overcurrent protection for a transformer with a primary current of 9 amperes or more (600V or less)?

100% of rated primary current 125% of rated primary current 150% of rated primary current 250% of rated primary current

Correct Answer:

125% of rated primary current

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