Being able to identify wiring makes electrical repairs easier. Use these tips to easily pinpoint problems and connect wires to the correct terminals when making repairs.
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Two cables entering an outlet box indicate that the outlet is not the last fixture on a circuit. One of the black wires receives power from the service panel; the other sends it on to other loads on the circuit. The white wires allow current passing through the outlet and the other loads on the circuit to return to the panel.
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