Q:

What is a common wire on a 2-way light switch?

A:

Quick Answer

Two way electrical switches have two types of wires connected to them: common wires and traveler wires. The common wire is the only wire that needs to be attached to a particular screw, often the dark one, on the 2-way switch.

 Know More

Full Answer

While the common wire must be connected in a specific location on the two way switch, the traveler wires may be connected to either of the remaining terminals. Location does not matter.

It is important to mark the common wire before unhooking it from the old switch. That way the common wire may be easily identified when attaching it to the new 2-way switch.

Learn more about Electrical

Related Questions

  • Q:

    What is a main switch?

    A:

    A main switch is a central cut-off switch that controls the smaller cut-off switches and machines of a building. The main switch can be cut off by a human or a computerized system to control the flow of power in the building.

    Full Answer >
    Filed Under:
  • Q:

    Is it safe to replace a 20-amp breaker with a 30-amp breaker?

    A:

    A 30-amp breaker in a slot wired for a 20-amp breaker could result in the overheating of the wire, switches or other components, which could ignite a fire. A replacement breaker should be the same size breaker as the circuit was originally designed for.

    Full Answer >
    Filed Under:
  • Q:

    How do you install a transfer switch?

    A:

    To install a transfer switch, install the transfer switch panel, and connect it to the circuit breaker with wires and a conduit. You need a manual transfer switch, flanged inlet box, 30-amp circuit breaker, wire nuts, a flexible 3/4-inch conduit and conduit connectors to complete this project.

    Full Answer >
    Filed Under:
  • Q:

    How do you wire a toggle switch?

    A:

    To wire a toggle switch, shut off the power, drill a hole for the toggle switch, cut the wires, twist the matching ones together, and solder the wires. You need a soldering iron, a power drill, diagonal cutters, wire nuts and wire strippers.

    Full Answer >
    Filed Under:

Explore