What is an earth loop independence test?

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This is to ensure the fault current will be strong enough to set off the circuit protection.

Answered by Dave, Electrical Safety Expert

Should there be a fault in an electrical circuit, an earth loop impedance test is conducted to ensure the fault current will be strong enough to set off the circuit protection. If a fault current is undetected or not disconnected fast enough, circuits can overheat and catch fire.

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