I m trying to install a motion sensor light switch that is a replacement to a standard one.
Light switch hot wire top or bottom.
One screw terminal is for the hot wire that feeds the switch from the power source.
It could be there is or once was a three way switch in play.
This gauge is when you want to use the quick connect method when wiring a light switch.
Simply strip the wire to the length specified and push the wire into the hole.
Instead of running a separate pigtail from the hot wire to each switch just leave the hot wire extra long.
Ok this is a very simple question.
If the line carrying power comes into the light box first the circuit must still be wired so the switch interrupts the black line.
I know which one is the ground.
The other two however on the old switch i understand one is supposed to be black and one is supposed to be white.
But remember for the light switch we need one black wire coming from the power source to the light switch and one black wire going from the light switch to the light fixture.
In this picture you can see the strip gauge on the back of the switch.
Then i added the second set of wires and tried to run a pigtail from the hot wires in the box black and red pigtailed together to the bottom screw and the white wire on the top screw.
There are three wires.
That leaves me with one black hot wire that goes from the junction box to the light fixture.
The switch leg brings power to the fixture when the switch is turned on.
The hot wire in a 120 volt residential ac circuit usually is coated with black insulation while the return or neutral wire is white.
In the attic had all.
To connect the switches simply score the wire with your wire stripper and push the insulation to expose about 3 4 in.
A single pole single throw switch such as a light.
Idealy connect white to top terminal black to bottom terminal bare ground to green screw on switch reinstall switch restore power and test by turning switch on.
When you see a red wire in a light switch box it can mean two things.
Connect the last switch in the usual manner looping the wire around the screw in a clockwise direction.
They have two screw terminals plus a ground screw.
Connect the source wire to the bottom terminal of the switch and the other black wire to the top terminal.
The switch should be up when it is turned on also you will read on and off as opposed to no and ffo on the switch.
Flipping the switch interrupts the flow of electricity to the light turning it off and on.
Wrap wire on terminals in a clockwise direction.