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

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A new 480Y/277-volt, solidly grounded wye service is rated 1,200 amperes. What additional service protection must the inspector require under NEC 230.95?

GFCI protection for personnel on every 277-volt receptacle Ground-fault protection of equipment with a maximum pickup of 1,200 amperes and a maximum time delay of 1 second at 3,000 amperes or greater A second service disconnect in a separate enclosure A concrete-encased electrode only

Correct Answer:

Ground-fault protection of equipment with a maximum pickup of 1,200 amperes and a maximum time delay of 1 second at 3,000 amperes or greater

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