Electrical tips for wiring switch outlet combination devices always use a tester to positively identify the exact designations for the circuit wiring in some wiring configurations a white wire may be used to switch power. You can change this duplex receptacle to a switch receptacle combination so that you still have power in the outlet but can use the switch to control your new overhead task light.
The following diagrams show each wiring configuration.
Wiring a combination switch outlet.
The brass screw is now a switched hot for controlling another device. However you have a receptacle just above the bench that you can get your power source from. The electrical wiring can be configured for the switch to control an overhead light leaving the outlet power available independently. How to wire a switch and outlet combo. Switch can control the light only. To add an additional outlet to the combo device simple connect the line neutral and ground terminals as shown in the fig below.
In some cases a red wire may be used for power or switched power. A switch and outlet combo can be configured in several ways. Switch and the outlet can have different lines in. To have the outlet always on connect the hot black wire to one of the dark screws. The combination outlet switch remedies this disparity. Use the combination as a replacement for switches in locations where a receptacle is also needed.
Video of the day. To have the outlet controlled by the switch connect the hot black wire to the brass screw. Wiring an outlet to the combo switch outlet in this wiring diagram the builtin switch in the combo device controls a lighting point whereas outlet can be used for other loads. However the walls are all finished so getting a new wire to a switch and then up to the light is not that simple. The dark screws then become a switched hot that you can use to control another device. Switch can control the light and outlet.
Ground connection diagram is shown separately.
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