How to Replace an Extension Cord Plug

Extension cords come in many forms, as so do the replacement plugs used to fix them. Make sure to choose a plug that is suited for the cord—a grounded three-prong plug if the cord has a ground wire, a two-prong polarized plug for simple household extension cords, etc.

Heavy-duty plugs attach to wiring by inserting the wire in the hole next to a screw. When the screw is tightened on the side of the hole, it draws the wire into the hole as a worm gear. Wire the opposite end of a three-wire extension cord in the same manner with a female plug.

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The prongs on extension-cord plugs are easily bent—and easily straightened with pliers. But after a few such re-straightenings, the metal can fatigue and snap off. When a plug’s life is over, it doesn’t mean you need to buy a new cord. How do you wire an extension cord plug? For about five bucks, you can attach a replacement plug.

Three-prong plugs have a hot wire, a neutral wire and a ground wire. When replacing a three-prong plug, connect the black wire in the cord to the brass terminal screw, the white wire to the chrome terminal and the green or bare wire, which is the ground wire, to the green ground screw in the plug.

Extension cords, over time, can receive a lot of wear and tear. During normal use, the plug ends can become damaged for any number of reasons. As long as the extension cable itself shows no sign of disfigurement, the plugs can be replaced. New female plug ends can be purchased from most hardware and home stores.

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Wiring a Plug . Bare the ends of the three wires inside the electrical cord for about half a centimeter, by cutting away the plastic insulation. Gently twist the strands of copper wire with your fingers until each strand is tight. Fold over the twisted strands.

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