Switchboards shall be dead-front and totally enclosed.

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Multiple Choice

Switchboards shall be dead-front and totally enclosed.

Explanation:
Switchboards on ships are designed to protect personnel from dangerous live parts and to contain fault energy. Dead-front means there are no exposed live components; all live parts are behind an insulated front. Totally enclosed means the equipment is enclosed so dust, moisture, and accidental contact cannot reach the internal live parts. This combination reduces shock hazards and arc injuries and helps control the spreading of any internal faults. Ventilation is a separate design concern for cooling and does not change the requirement to be dead-front and totally enclosed.

Switchboards on ships are designed to protect personnel from dangerous live parts and to contain fault energy. Dead-front means there are no exposed live components; all live parts are behind an insulated front. Totally enclosed means the equipment is enclosed so dust, moisture, and accidental contact cannot reach the internal live parts. This combination reduces shock hazards and arc injuries and helps control the spreading of any internal faults. Ventilation is a separate design concern for cooling and does not change the requirement to be dead-front and totally enclosed.

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