Q:

When electrical equipment becomes faulty, the casing (if made of metal) may become live. In this case what is the function of the earth wire on the equipment?

belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:18| Question number:21

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2022-10-22

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When electrical equipment becomes faulty, the casing (if made of metal) may become live. In this case what is the function of the earth wire on the equipment?

To provide a path to ground that has high electrical resistance.
To provide a path to ground that has low electrical resistance.
To provide a path to ground for excess heat to fl ow through.
To melt and thus break the circuit so that current can no longer flow.

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waelhammad

2022-10-22

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B: The earth wire allows current to fl ow to earth rather than through a person touching the case. In addition, the fuse should melt almost immediately.

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