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. What are the black white and green wires in a power cord.
Usb Wire Color Code The Four Wires Inside Hubpages
Green white black wires. In oil burner relay switches you have a black and white wire. The colors regulated by the national electrical code in the united states are standardized for safety. The ground wire is usually left bare but in some cases the ground wire color is green. Loosen each terminal screw hook the wire around it and put the screw down tightly. The orange is the motor the violet is the ignition etc. According to standards in use since the mid 1900s a wire color code identifies the purpose of each wire in an electrical circuit.
I know the ground trying to determine is black and white. A white wire is normally the neutral wire. 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. But looking deeper the color of the wires inside of the sheathing reveals that different colored wires serve different purposes. If there is a green wire its screwed into the junction box. Black wires are always hot wires meaning that they carry electricity.
When youre done join the two halves of the plug casing and tighten the screws to hold it together. A green wire or bare wire with no insulation is normally the local ground wire. Beyond that are general industry accepted rules about wire color that indicate their purpose. When an appliance or tool requires a three prong grounded plug connect the grounding wire green under the green terminal screw on the grounding prong. 3 wires black white green with a molded plug on one end and three bare wires at other end. I want to determine which prong on the cord is hooked up to which color wire.
The white wire goes on the silver terminal the black wire on the brass one and the green wire on the green one. Hooking up control and i have a molded power cord. One is silver one is brass and one is green. Attach the black wire hot under the brass terminal screw and the white wire neutral under the silver terminal screw. 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. There are no color codes in his 77 years of wiring 200 year old houses.
Ac power cord color codes. A black wire can be the hot wire of a 120 volt supply.
Gallery of Green White Black Wires
