How to Wire a Twist Lock Plug

How to Wire a Twist Lock Plug
Published: Aug 6, 2010
Updated: Nov 20, 2021
1 minute read

has curved blades that, once inserted into the receptacle and twisted, can't be pulled from the receptacle unless the plug is twisted in the opposite direction to "unlatch" it. When wiring the plug, you 'll find it has three color-coded terminals, a positive, a neutral and a ground.

  1. Wrap the "hot" wire--usually black, clockwise around the screw in the plug's gold-colored terminal. Tighten the screw with a screwdriver.

  2. Connect the neutral wire, usually white or gray, to the silver terminal, by wrapping it clockwise around the screw in the terminal in the Twist Lock plug. Tighten the screw.

  3. Twist the strands of the the ground wire, usually green or green with a yellow stripe, to form a single thread of wire. Wrap that thread around the screw in green terminal in the plug. Tighten the screw.

The Drip Cap

  • The Twist-Lock connector is a product of Hubbell Wiring Device-Kellems.
  • Connect the neutral wire, usually white or gray, to the silver terminal, by wrapping it clockwise around the screw in the terminal in the Twist Lock plug.

Photo Credits

spools with a wire image by Victor M. from Fotolia.com

spools with a wire image by Victor M. from Fotolia.com

Will Charpentier

Will Charpentier is a writer who specializes in boating and maritime subjects. A retired ship captain, Charpentier holds a doctorate in applied ocean science and engineering. He is also a certified marine technician and the author of a…

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