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Electrickery Quicky


Mudmonkey
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When the relay connects and disconnects it's back EMF can generate considerably larger currents than it would carry in normal operation. Hence why there tends to be a bit of an overrating on most cabling.

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When the relay connects and disconnects it's back EMF can generate considerably larger currents than it would carry in normal operation. Hence why there tends to be a bit of an overrating on most cabling.

rubbish. The back emf is a voltage that lasts for a very short time, no extra current.

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