Red Blue Green Electrical Wire

Non metallic or nm 120 volt and 240 volt electrical cable come in two main parts.

Red blue green electrical wire.

The usa have their own wiring colours for electrical circuits black red and blue are used for 208 vac three phase. Canadian wiring is governed by the cec canadian electric code. Outdoor ceiling fan wiring. Three phase lines are red black and blue.

Electrical cable and wire color markings. In 220 volt circuits red wires are the secondary live wires. The protective ground is green or green with yellow stripe. According to standards in use since the mid 1900s a wire color code identifies the purpose of each wire in an electrical circuit.

The outer plastic sheathing or jacket and the inner color coded wires the sheathing binds the inner wires together and its outer markings indicate the number of wires and size of wire gauge within the sheathing. It s possible to link two red wires together or a red wire to a black wire. Like black wires they can also be used in some types of switch legs. So first they made it into 64 pairs of two wires each there were other advantages and then using 6 colors and having a second color for the second wire e g.

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. Blue yellow violet and brown wires often act as the travelers to transfer power between the switches in 3 way and 4 way switch. In addition red wires are used to connect hardwired smoke detectors to the home s power system. The color of the sheathing indicates recommended.

However all electrical wires regardless of their function may carry an electrical current at some point and should be treated with equal caution. The neutral is white the hot live or active single phase wires are black and red in the case of a second active. The uk s new cable colours for plugs are now harmonise with europe s power cable colours for ac dc. Brown orange and yellow are used for 480 vac.

Canada ac power circuit wiring. Blue and yellow. Installing an outdoor ceiling fan wiring an the electrical wiring connections can be a little tricky especially when it comes to the red wire and the blue wire. Australia also have a different wiring colour standard.

White orange white blue red green they could have a means of identifying each of the 64 pairs of wire. Always assume the red wire in those applications is live. In the standard wire color code the hot wire in a cable with two conductors plus ground is black and the extra hot wire in a three conductor set is red. The white wire is always neutral and when the cable has only two conductors as most 120 volt cables do the hot wire is black.