ND Electrician Practice Questions - North Dakota Journeyman Electrician License Exam

According to NEC 250.30(A), what is required when bonding a separately derived system such as a transformer?

Only a grounding electrode conductor is required A system bonding jumper must connect the grounded conductor to the equipment grounding conductor and the supply-side bonding jumper The transformer case must be bonded to the building steel only No bonding is required if the transformer is within 10 feet of the service panel

Correct Answer:

A system bonding jumper must connect the grounded conductor to the equipment grounding conductor and the supply-side bonding jumper

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