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    MrRobinson's Avatar
    MrRobinson Posts: 1, Reputation: 1
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    #1

    Jul 13, 2015, 08:33 AM
    Electricity
    I just fried a 220v 20amp plug when it came in contact with a frame for a riveter. It's fed from a 30amp breaker.. can somebody please tell me why that happened!.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Jul 13, 2015, 09:05 AM
    Well let's see - the breaker should have tripped at 30A, though it's not instantaneous. Hence for some period of time there were 30A (and probably more) of current flowing through a connector rated at 20A. So it fried.

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