Blue Wire Neutral Or Hot

And hence the black hot white neutral which dates back to the days of knob tube exposed 1 4 copper wires on porcelain insulators where you could clearly see where each wire went.

Blue wire neutral or hot. Hook the neutral and ground wires first. However if you see a white wire with electrical tape on it that may indicate that it s being used as a hot wire. If you want to run both the light and fan on one switch twist the blue and black wire from the unit together. You could see the hot wire going into the switch this one always hot and you could see the wire coming out that was only hot when the switch was turned on.

Green to green with yellow stripe. In this case consider a fan with green ground white neutral blue hot for the fan and black hot for lights wires. There can be other colors of hot wires in some systems as well but black is the most common. This white wire should be looped several times around with black electrical tape to show that it is being used for something other than a neutral.

However all electrical wires regardless of their function may carry an electrical current at some point and should be treated with equal caution. The blue is negative or return so that will go to white. The ground should be coming off of your frame. Blue and yellow wires are sometimes used as hot wires and as travelers green wires and bare copper wires are ground wires and white and gray wires are neutral.

Green with yellow stripe is the ground and will go to the building green. If you are running 220 volt or more then you will probably have. For instance a white wire in a two wire cable may be used for the second hot wire on a 240 volt appliance or outlet circuit. Brown is your hot wire so you want to connect that to your building s black wire.