Electrical Wiring Color Code Standards Usa. Understand electrical wire color codes when wiring a switch or outlet. By the extensive amount of electrical standards and wiring regulations which determines their decisions. Usa wiring color codes for dc supply.
The canadian electric code governs the electrical wiring color code for canada. In the united states 2011 national electrical code nec is the standard regulating most electrical installations. Usa wiring color codes for dc supply. Black red and blue are used for 208 vac three phase.
Us ac the us national electrical code only mandates white or grey for the neutral power conductor and bare copper green or green with yellow stripe for the protective ground in principle any other colors except these may be used for the power conductors.
Consumer unit colour code of solid stranded flexible conductors cb. By the extensive amount of electrical standards and wiring regulations which determines their decisions. Quoting from authoritative codes standards for each region we provide a table summarizing the current and prior wiring color code conventions used by electricians in building wiring. Nec of usa defines green green with yellow stripe bare copper for ground wire. Ac power 120 208 240 volts ac power comes in many different types based on how many volts the wires will be carrying.