A switch with three wires could be used for a hall light with a switch at each end.

It is possible that you may encounter a double pole light switch within the home, but these are not very common in a residential setting. The 3-way switch may have a grounding terminal, and the box and the switch should be connected to the ground wire as described above. L33 7SY,

No personal information is stored. Just like before, twist the three wires together, screw on a cap, then connect the jumper to the switch in Box 1 and the single black wire in Box 2 to that switch.

I removed a wall switch that had three wires (white, black, and ground). Fig 2: Double gang two way light switch. Your light switch is now wired and fully functional. You should also remove the appropriate fuse and switch off the correct circuit breaker. A double-switch allows you to operate two lights or appliances from the same location. How do I wire a double switch if there is only 1 black wire, 1 white wire, and a ground coming from my fan and light? Some brands of light switch may have slightly different labeling on the terminals (such as C L1 L2 or even L1 L2 and L3).

The only difference is that a cable that connects the two electrical boxes replaces one of the 6-inch jumper wires in the pigtail.Make the pigtail in the box into which the line cable enters, or Box 1. A single wall switch controls the power to the fan and light together, whereas a dual wall switch has two separate switches – one for the fan and the other for the light. The 4 way switch has four terminals. A three-way switch has an extra terminal because a pair of three-ways has to be connected to each other as well as to power and the light. Hunker may earn compensation through affiliate links in this story. In most home wiring situations, you will likely only find three types of light switches.The most common light switch is the single pole light switch. He worked as an expert consultant with eHow Now and Pro Referral -- a Home Depot site.

Connect the one black wire to the bottom dark screw of the other already wire configured switch.

Copyright © www.electrical-online.com | 3 way light switch wiring (3 wire system, new cable colours) 3 way light switch wiring (2 wire system) This switch arrangement is basically two two way switches on a single face plate. If you only have one cable in the device box, then the switch outlet is likely wired as a switch leg drop.

Leviton Presents How to Install A Decora Bination Device with for. It doesn’t matter what terminal the wires are connected to on a single pole switch.

A three-way switch has an extra terminal because a pair of three-ways has to be connected to each other as well as to power and the light.

The double pole or 2-pole switch is essentially two single pole switches operated by one toggle. You often find three-ways at opposite ends of a staircase.

Because this level of troubleshooting requires a live circuit to determine what's what, call a qualified electrician to do this repair.