Symptoms
- Outlet has no power unless a specific wall switch is flipped
- Usually affects only the top or bottom half of a duplex outlet
- Common in living rooms and bedrooms for lamp control
Likely causes
- CommonIntentional switched-outlet wiringBuilders often wire one half of an outlet to a switch so a lamp acts like an overhead light.
- PossibleA miswired or newly changed circuitA remodel or DIY change may have connected an outlet to a switch unintentionally.
- PossibleConfusion with a different switch entirelySometimes the controlling switch is in an unexpected location, like a hallway.
What to do
- Try nearby switches, including ones just outside the room, to find which one controls the outlet.
- Check if only the top or only the bottom plug of the outlet is affected, which confirms it's a half-switched outlet by design.
- If that's expected, plug lamps into the switched half and always-on devices into the other half.
- If you don't want it switched, a licensed electrician can break the connecting tab differently or rewire it.
- If this behavior started suddenly and wasn't there before, treat it as a possible wiring issue rather than a feature.
- Turn off the breaker before doing any work on the outlet or switch.
Tools and parts
- Non-contact voltage tester
When to call a pro
Call an electrician if you want the switched behavior removed or changed, or if this started unexpectedly and you can't find a controlling switch.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.