A switchboard has an opening that exposes energized parts after a required dead-front barrier was removed. What is required before normal use?

NASCLA Electrical exam practice question · Equipment for General Use

A switchboard has an opening that exposes energized parts after a required dead-front barrier was removed. What is required before normal use?

Restore the listed guarding barrier
BMark the floor with tape only
CIncrease the feeder rating
DLeave it open for cooling

Why A is correct

Electrical equipment must guard energized parts from accidental contact during normal access. Floor markings, larger conductors, or added ventilation do not replace the listed enclosure barrier.

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A switchboard has an opening that exposes energized parts after a required dead-front barrier was removed. What is required before normal use?

A switchboard has an opening that exposes energized parts after a required dead-front barrier was removed. What is required before normal use?

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