The different colors of electrical wires indicate the function of the wire with black and red indicating the wires carry electric current white usually indicating neutral charge and green indicating the wire is grounded. The white wire goes by many names that all mean the same thing.
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Black and white electrical wires. The black wire is hot. According to standards in use since the mid 1900s a wire color code identifies the purpose of each wire in an electrical circuit. The neutral wire can also be gray. Sometimes youll find a white wire with a piece of black electrical tape wrapped around it. 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. You connect the black wires in the electrical box to the switch terminals and the white wires to each other.
In the most basic 110 volt electrical setup youll find two wires. In that wiring scheme assume the black and re marked white wires are live. When installing a. The colors regulated by the national electrical code in the united states are standardized for safety. Black wires are always hot wires meaning that they carry electricity. Red or orange can also be used as a second switched power wire in a 120 volt application.
Power flows from the box to the outlet through the black wire and back to the box through the white one. The black wire will be your hot wire and your whites are neutral depending on your switch setup you can wire nut the blacks together with an extra piece of wire coming from the wire nut to connect the hot to the light as well as the same method with your white wires. Neutral common or return. The switch also has a green terminal for the ground wires which usually are bare. The ground wire is usually left bare but in some cases the ground wire color is green.
Gallery of Black And White Electrical Wires
