Radio Amateur Quiz Canadian License

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Question B-003-019-010

On mains operated power supplies, the ground wire should be connected to the metal chassis of the power supply. This ensures, in case there is a fault in the power supply, that the chassis:

Correct Answer

does not develop a high voltage with respect to the ground

Explanation

The ground wire provides a low-resistance path for fault current to flow, tripping a breaker or blowing a fuse, rather than making the chassis dangerously live.

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