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Electrical Wire and Cable

Switched Outlet Wiring


electrical outlet wiring repair

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Summary: Electrical Outlets Question: I'm trying to wire a switched outlet. The problem is in the switch box where there is one set of wires which are black, white, ground, and another set that also has a red wire. The same setup is on the outlet. I am trying to get the switch to control just the top plug, and have the bottom plug hot all the time.


The Process of Wiring a Switched Outlet




Electrical Outlets Question:
I'm trying to wire a switched outlet. The problem is in the switch box where there is one set of wires which are black, white, ground, and another set that also has a red wire.

The same setup is on the outlet. I am trying to get the switch to control just the top plug, and have the bottom plug hot all the time.
I am lost and any help would be apprectiated.
Steve M.


Hi Steve - Great Electrical Repair Question!
This is a typical half-hot plug.
Please see the Wiring Diagram #1 on this page:
Disposal Wiring Diagram

The black or hot wire coming in splices through for the hot to the outlet but also supplies power to the switch.

The red wire is attached to the switch and feeds down to the outlet.

You'll have a split outlet where the tab is broken on the outlet.

The top (black) is hot all the time, the bottom (red) is controlled by the switch.


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Electrical Tip

The Safest Way to Test Electrical Devices and Identify Electric Wiring!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester, [amazon.com], I use for the detection of Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.


Outlet Wiring Questions and Answers