Identify the neutral wire in the fixture by looking at the wires. In most modern fixtures the neutral wire will be white and the hot wire is red or black. In some types of fixtures, both wires will be the same color. In this case, the neutral wire is always identified by some means.Identify the neutral wire

Which wire is positive when both are same color?

If you have a wire where both sides are the same color, which is typically copper, the strand that has a grooved texture is the negative wire. Run your fingers along the wire to determine which side has the ribbing. Feel the other wire which is smooth. This is your positive wire.

How do you know which wire is hot?

0:592:02How To Find Find Hot Wire Without Color Clue - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow the wire if it gives voltage thats the hot wire. And if it does make sure you dont touch yourMoreNow the wire if it gives voltage thats the hot wire. And if it does make sure you dont touch your any of these to each other or the probes to each other while youre touching them.

Is black wire positive?

The black wire is positive, the white wire is negative, and the green wire is the ground.

Why would a switch have two black wires?

The bare or green-wrapped ground wires serve as a backup to divert the power safely away in case of an electrical fault. In most cases, two black wires will be attached to the switchs two terminal screws. The ground wires will be connected to each other and attached to the grounding screw on the switch.

What if both black and white wires are hot?

like the title says both wires (black and white get or turn hot). To answer your question, Yes, that is correct. The reason you are getting 120 volts when the fan/light is on is because the voltage is feeding trough the motor or the light bulb (or both).