Wiring a 3-Wire Dryer Outlet - Ask the Electrician Typically the 3-wire power connections of the 240 volt lines are connected to the two outside terminals and the ground is connected to the center terminal. However you should verify this by closely looking at the wiring diagram that should be on the dryer, or on the inside of the cover plate of the terminal connection area, or check with the installation manual that came with the dryers. Electrical Connections for a 240 Volt Dryer Outlet Wiring a Dryer Outlet Electrical Question: I need help wiring a 240 volt outlet for a electric clothes dryer. I am putting in a new power outlet in for a 240 volt electric clothes dryer. The old dryer was wired direct. The new outlet calls for a W, Y, and X wires. I have Red, White, and Black wires.
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