Color Electrical Wire Types Chart

Typically considered neutral but can sometimes be used as a hot lead in certain situations such as switch loops.

Color electrical wire types chart. Types colors and nominal outside diameters such as 500 mcm 750 mcm 1000 mcm 1500 mcm 2000 mcm and 2500 mcm. In that case local custom dictates the. Electrical cable and wire color markings. Thhn and thwn are codes for the two most common types of insulated wire used inside the conduit unlike nm cable in which two or more individual insulated conductors are bundled inside a plastic sheathing thhn and thwn wires are single conductors each with its color coded insulation.

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The first letter is the main color of the wire and the second letter represents the striping. Understand electrical wire color codes when wiring a switch or outlet. Non metallic or nm 120 volt and 240 volt electrical cable come in two main parts. If you need to understand what the wire colors are for electrical wiring what color the live or hot wire is or what color is the ground wire in your electrical system you will find the answers here.

Typically white wires are neutral wires green or bare wires are ground wires and any other color is a hot wire that carries an electrical current. 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.