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How do I install a GFCI in a box with two 2-wire cables and one 3-wire cable?

Home Improvement Asked by Ethan N on November 1, 2021

enter image description hereI need some help please. I’m replacing a standard receptacle with GFCI but the instructions that came with the GFCI doesn’t explain how to make the connections when when there is a 3-wire cable. Even more confusing is this box has 3 cables feeding into it (one 3-wire and two 2-wire). Thanks in advance!

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One Answer

Easy peasy. Most GFCI receptacles have a method to attach 2 wires to each LINE screw.

That is exactly what you do. The two black wires go on the brass LINE screw. The 1 white wire goes on the silver LINE screw. And you're done.

Answered by Harper - Reinstate Monica on November 1, 2021

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