Unbelievable Two Black Wires On Light Switch

However if you need to rewire a light switch or a plug socket you may occasionally come across two black wires.

Two black wires on light switch. You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2 way switch and a black wire from the other screw on the 2 way switch going to the load light ceiling fan etc. Connect the top screw to the wire that feeds to the light. The easiest and safest way is to use a multimeter to test for current.

Connect the bottom screw to the hot wire. Notice the black wire is the only wire that we are controlling through the 2 way switch. The a wire wrapped around the screw can get thrown out with the switch.

You had a cheap and lazy electrician wire up that switch bank. When you turn the power back on and if you want to swap the direction of the switch as in press down to turn off or turn on turn off the power and switch the two black wires. You wont be putting a dimmer on a fan motor or switched outlet.

Switches are never connected between a black wire and a neutral wire. My apologies if this has been tackled before but i m trying to replace an old. A three way light switch is one where you have two switches that have the ability to control the same light or set of lights.

Black means hot white signifies neutral and green indicates ground. As you already know. As the first post says.

The two black wires one is power input the other is switched power output is used to control a light fixture or outlet. Make sure to shut off the power before doing this turn the breaker for the circuit off. Electrical ac dc my old light switch in my bathroom only has two black wires connected to it.