Many of the wire identifications standards rely on color codes. Electrical wiring is an electrical installation of cabling and associated devices such as switches distribution boards sockets and light fittings in a structure.
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L wire color. Allowable wire and cable types and sizes are specified according to the circuit operating voltage and electric current capability with further restrictions on the. Automotive wiring colors. Older installations may use different color codes.
In some jurisdictions all wire colors are specified in legal documents. It depends on your location voltage and other important factors. There are some safety measurements that are to be followed while dealing with electrical wiring and the color codes of wires will help in implementing those safety measurements as a single code is followed in that particular jurisdiction.
Electrical wiring in canada is governed by the canadian electric code cec. In other jurisdictions only a few conductor colors are so codified. In that case local custom dictates the.
White single phase live wires. Black or red for a second live wire 3 phase live wires. The wiring in a typical residence can get complicated and in an effort to keep track of whats what electricians assign certain colors to wires in an electrical circuit.
The national electrical code nec says that white or gray must be used for neutral conductors and that bare copper or green wires must be used as ground wires. Another way that diagrams include the wire color is by using a two letter code. Beyond that are general industry accepted rules about wire color that indicate their purpose.
It is always a great idea to document the color code thats. But looking deeper the color of the wires inside of the sheathing reveals that different colored wires serve different purposes. Wiring is subject to safety standards for design and installation.
Wiring for ac and dc power distribution branch circuits are color coded for identification of individual wires. Red black and blue its important to remember that the above color information applies only to ac. It is important to note that with this type of wiring there are multiple phases in place each of which will get its own color wire to make it clear what it is for those working on it.
The following wiring color requirements apply in canada. For wires that will be 120 208 or 240 volts the following wiring color standards are used. Which standard should you be using for your project.
The national electrical code mandates particular colors for the ground wire and the neutral or return leg of a grounded circuit. Green or green with a yellow stripe neutral wires. The first letter is the main color of the wire and the second letter represents the striping.
For example a wire marked gr would be green with a red stripe. With the help of color codes of electrical wires they can be easily and safely identified.