White and gray wires are grounded conductors, AKA neutrals. After a black or red wire carries electricity to a light, appliance or device, the neutral returns it to the electrical panel.
When you think about it, not having a third-wire ground at all is the ultimate ground fault. A GFCI does not require an ...
WHITE = 14-gauge wire ... Here are a few ways to run an outdoor electrical wire. Mobile home feeder cable This is a convenient assembly of four wires for supplying 100 amps of power to a mobile ...