Circuit Wire Color Code

Negative the wire for the negative current is black.

Circuit wire color code. Ac power 120 208 240 volts. 2 wire earthed of a positive grounded dc circuit. The proper wiring color codes used in the boat wiring is a best strategy for different wires tracing time saving easy maintenance troubleshooting. Single phase line hot black or red.

3 phase phase 1 black. Since red wires still conduct current they are considered hot. 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. The united states national electrical code requires a bare copper or green or green yellow insulated protective conductor a white or grey neutral with any other colour used for single phase.

Ground wires return fault current to earth ground protecting the individual from electrocution. 120 208 240 volt ac wiring color codes in usa. Positive labeled as l. Throughout most of europe and in the united kingdom uk the international electrotechnical commission mandates electrical wiring color codes for all functions.

3 phase phase 3 blue. Negative labeled as l. 2 wire earthed of a negative earthed dc circuit. The wire color codes for this category is as follows.

Positive the wire for the positive current is red. Ground green green with yellow stripe or bare wire. The diy wiring in the boat instead of a licensed technician makes a lot of trouble as it is a painful task to figure out the desired wire in the confined space and concealed areas where a bunch of wires are laid with other bundled wire. These ac ranges are mostly used in home and office environment.

Beyond that are general industry accepted rules about wire color that indicate their purpose. Positive labeled as l. In principle any other colors except these may be used for the power conductors. Negative labeled as m.

Ground the ground wire if present will be white or grey. These are called travelers and typically used for two way switch wiring. Nec wiring color codes for ac us canada us nec ac single multi phase wiring color codes the mandatory colors for power wiring in national electric codes nec are green bare or green yellow yellow strip or band on green for protective ground pg and white alternatively grey for neutral wire. Uk ac power circuit wiring color codes us ac.

In the new color code for electrical wires brown is used for live or line blue is used for neutral conductor and green for earth. A ground wire is used as a protective measure. Dc supply wire color codes. 3 phase phase 2 red.