Vocabulary Examination



1.
Patrick, who was always joking, added ________ to the formal dinner, which his sedate employer did not appreciate.

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Precautions while using Electrical Equipment

Use Residual Current Devices

Use Residual Current Devices (RCDs) for extra safety An RCD can provide additional safety. An RCD detects some (but not all) faults in the electrical system and rapidly switches off the supply. The best place for an RCD is built into the main supply or the socket outlet, as this means that the supply cables are permanently protected. If this is not possible, use a plug incorporating an RCD or a plug in RCD adaptor. RCDs for protecting people have a rated tripping current (sensitivity) of not more than 30 milliamps (mA).

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