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Plug a lamp into a working socket of an outlet to ensure the lamp works. Then turn off the switch and plug lamp into all outlet sockets, top and bottom outlets until the lamp doesn't light. Then turn on the switch and the lamp should light. Often a switch in a bedroom is only connected to one socket in a duplex outlet. It is possible to remove a jumper in an outlet to isolate the sockets for just this purpose. Often an electrician will install the outlet upside down (The third prong pointing up, to identify the outlet.

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Q: How do you know which outlet is controlled by a switch?
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Related questions

Does an outlet controlled by a light switch still pull energy when the light switch is off?

No.


Can you wire a switch downstream from an outlet?

If you are asking can you put a device, controlled by a switch, using a connection with an outlet, the answer is yes. The caveat is that whatever you add must stay within the amperage rating of the controlling fuse or breaker.


What wattage does a 3-way light switch use in a single switch outlet?

A switch does not use wattage, or consume power which is a better way of putting it. It depends on what appliance is being controlled by the switch.


How do you wire a gfci outlet with fan switch?

Home depot sells RF switches whereby if the fan is connected to the transmitter. It can be controlled by as far as 5 meters i believe In my SPA i have this device for safety. switch here get turn on there


Why is there no power to outlet when light switch is turned off?

Some rooms have an outlet controlled by a light switch at the door. This is normally in bedrooms. It is possible that the switch is wired to only one of two outlets in a duplex outlet since it is easy to configure a duplex outlet to separate the bottom and top outlets.


Is the switched portion of an outlet mounted toward the top or the bottom?

There is no switch on an outlet. You can mount an outlet with the ground up or down. Most electricians I know mount the ground down as I do.


How do you run a light with a switch from a existing outlet with out controlling the out let with the switch?

Break off the tab that jumps between the wire mounting screws on the side of the receptacle. This turns one receptacle into 2 seperately controlled parts--one is always hot and the other is controlled by the switch (the one with the lamp plugged in).


Why won't a three way lamp switch work on all three settings when used in a outlet controlled by a wall switch?

If the wall switch is on, the three way lamp switch should work. If it doesn't, it may be broken or there may be something else wrong with the circuit.


How do you wire 2 new lights with on-off switches using wires coming from an existing outlet?

You can attach/splice into the power feed to outlet (ways of doing this can vary with how the outlet is wired but make sure that all or part of the outlet isn't controlled by an existing switch). You can then take the hot, neutral and ground to a light fixture or to the first switch, then to the second switch. It is normally easier to do this project by taking power to the light (s) first, with 2 wire drops to the switches, from basement or attic.


How do you disconnect a light switch and outlet that are tied together?

If there is a black wire going from the outlet to the switch and the other side of the switch goes back to the outlet then just cut these wires and connect supply wire directly to outlet. If the supply goes to the switch first, disconnect from switch and connect the two wires with a wire-nut. Some situations only switch one of the two outlets in a duplex device. Do the same thing, but also replace the outlet since the strapping between both outlets has been removed.


Can it be dangerous to wire one outlet of a double outlet to a switch?

No, that is not unsafe.


Why does the light switch not work to an existing electrical outlet?

Could be a loose connection somewhere, or a bad switch, or a bad outlet.