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The purpose of a switch is to stop and start a current flow in a circuit. The stopping of a current flow in a circuit effects the load of the circuit by stopping its action. Resuming the current flow in a circuit also resumes the action of the load.

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Do you need to turn the power off at the box before installing a light?

That depends on your meaning. Are you talking about turning off the breaker when you screw in a new lightbulb or fluorescent tube? That isn't necessary, but it is a good idea to turn off the switch. If you're talking about installing a new light fixture, yes, you should always turn off the breaker or remove the fuse. Many electricians, if they are sure of what they're doing, will simply make certain that the light switch is turned off.


Power is not off . need to change when you change the light switch?

Yes, you need to turn off the power when you change (replace) a light switch, since at least one of the terminals on the switch will always have power if the circuit is energized at the panel.


How do you wire a motion security light from the box to the light?

You wire a security light like any other light. The sensor is generally part of the light and provides an "auxiliary" switch to detect movement and switch on the light, usually only after dark.The regular light switch for the security light should be left "on" at all times and labeled or enclosed to prevent being accidentally turned off. The sensor will not work, and the light will not go on, if the regular light switch it not on.Many modern units allow you to "lock" the motion sensor on by using the regular light switch to turn off the circuit and quickly turn it on again. This makes the light stay on until morning, when the photocell will turn it off and reset the lock, even without any motion detected.


What is the other name for staircase wiring?

I've seen it called "hallway wiring". The idea is the same in both cases . . . there's a switch at both ends, and either switch can turn the light on and off, regardless of the position of the other switch. That way, a single person can turn the light on at one end of the hallway or staircase, walk up the stairs or through the hallway, and turn the light off when he reaches the other end.


How do you connect an ON-OFF switch to control the light?

To control a light with a switch, the switch has to be connected in series with the light fixture.

Related Questions

What would make a light turn off and on?

a light switch


How do you operate a light switch to turn the light on and off?

To operate a light switch, you simply flip the switch up to turn the light on and flip it down to turn the light off.


Do you say 'switch off the light or turn off the light'?

well most people say turn off the light but you could say switch of the light.


Can you demonstrate how to operate a light switch by turning it on and off?

To operate a light switch, simply flip the switch up to turn the light on, and flip it down to turn the light off.


Can I get my ceiling fan to turn on and off by using the light switch?

Yes. Simply turn on the ceiling fan while the light switch is in the "on" position. Adjust the spinning to the level of your choice. Now the fan will turn on and off when you switch the light on and off.


How can you use your light switch?

To use your light switch, simply flip it up to turn the light on, and flip it down to turn the light off.


How do you operate a toggle light switch?

To operate a toggle light switch, simply flip the switch up to turn the light on and flip it down to turn the light off.


When does the light turn on and off in your house?

The light turns on when you flip the switch, and it turns off when you flip the switch again.


How do you turn the webcam off?

How do i turn the green light off from the webcam i cant switch it off


Why does a light go out when you turn off the wall switch?

When you turn off the wall switch, it breaks the circuit that allows electricity to flow to the light bulb, causing the light to go out.


Can a clapper turn on a light switch?

There are such devices that, when clapping, can turn on or off.


What is the purpose of switches?

the switch is to control the light if this is turn on or turn off