How to Rewire Green, Black & White to a 3 Three Prong Mar 20, 2018How to Rewire Green, Black & White to a 3 Three Prong Extension Cord. The white wire goes on the silver terminal, the black wire on the brass one and the green wire on the green one. Loosen each terminal screw, hook the wire around it and put the screw down tightly. When you're done, join the two halves of the plug casing and tighten theAuthor: Chris Deziel If there are 3 wires - green black white and you know that A three wire cord will have a black, white and green coloured wires in the cable set. To use a four wire cord to carry 220 volts just use the black, red and green wires. Connect to the cord ends.
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