Three Wire Diagram Bare Black White. Attach the new light fixture install the trim ring and light bulbs. I tested the lines with a multimeter and the voltage between the white and bare copper wire is 120v 120v between the black and.
Generally with a 3 wire pup the bare wire is for shielding only ie pup cover and baseplate and is connected to ground. Attach the new light fixture install the trim ring and light bulbs. If you see a white wire marked with black or red or a piece of black or red electrical tape at its ends that means its acting as a hot wire and is no longer neutral.
The red and black wires in 220v circuits carry 220 volts across each other but 110v in relation to the neutral which is the white wire in a four wire cable leaving the green or bare copper wire for grounding the circuit.
From the ceiling there are. Yellow goes from the connector wich goes into the camera to the core of the coaxial cable. The line was not in use and does not have an outlet it is a 3 wire line whiteblack and bare copper wire. These are the types of wire colors commonly found in home and office settings.