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What are the three components necessary to form an electrical circuit?

Every circuit is comprised of three major components:

  • a conductive “path,” such as wire, or printed etches on a circuit board;
  • a “source” of electrical power, such as a battery or household wall outlet, and,
  • a “load” that needs electrical power to operate, such as a lamp.

What type of switches shut off the flow of electricity immediately?

Unlike a switch, a circuit breaker automatically does this and shuts off the power immediately, or darn close to immediately. In this way it works as an automatic service protection device.

Why would a light stay on when the switch is off?

3) The reason the light remains On is that the light is permanently connected to another hot wire in the ceiling. In order for the light to work with the switch, the ceiling light needs to be connected to the switched leg conductor coming off of the switch

How can you tell if a 3 way switch is bad?

Locate a Bad 3-Way Switch

  1. Usually when a 3-way switch fails, lights can be toggled on and off at one switch, but not the other.
  2. One of these switches will not turn the light on and off (while the light is on) and that is the bad switch.

What happens if ceiling light wired incorrectly?

The fixture still works if you reverse the wires, but the socket sleeve will be hot, and anyone who touches it while changing a bulb can get a shock. When wired correctly, the socket sleeve is neutral and only the small metal tab at the base of the socket is hot.

Can a faulty light switch cause a fire?

Answer: It would be unusual, but possible as long as the circuit is hot. The small springs inside the switch gradually go bad, causing resistance and that resistance causes heat, which causes a fire

Is a faulty light switch Dangerous?

Replacing a light switch may seem like one of those DIY electrical fixes, but there can be dangerous consequences to doing it wrong. Any mistakes with electrical elements can lead to fires and electric shock.