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Fh01may 02317002 Testing A Circuit Breaker Panel For 240 Volt Electrical Service Jvedit. Before you add a 240-volt appliance, you need to make sure you've got what it takes. Before you add ...
Test buttons: Use the test buttons whenever you want to test a GFCI or AFCI breaker. Simply press the button to disrupt the electrical current, then check to see if the breaker tripped as intended.