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 colors, regulated by the national electrical code in the united states, are standardized for safety. Wire colors red black. The standard colors found on the inside of usb cables are red, black, white, and green each of these colors indicates the purpose of the wire — whether for charging or data transfer although the standard wire colors in the usb cable are red, black, white, and green, don’t worry if that is not the case for your cable occasionally, you may.
wire colors red black
Ac motors designed for multiple rates of output possess a number of colored wires in two-speed electric motors, these wires are generally colored red, white and black by applying power to the wires in the right way, you can easily switch the output rate of the motor with a toggle switch. Why wires are different color. the wires inside an nm sheathed cable are color-coded to make it possible to identify each one at both ends of the cable and wire correctly. all nm cables contain the basic black insulation and white insulation wires plus the bare copper or green insulated ground wire.. Nec defines white or grey color for neutral wire and green/ green with yellow stripe/ bare copper for ground wire. any other colors except these may be used for other power lines. however, as per local practice, the standard wiring color codes may be divided in two main categories. they are: usa wire color codes for ac supply..
get link reference
