Electric Colour Codes

Phase 1 red phase 2 black phase 3 blue neutral white ground green with yellow stripe when are color codes applied to wiring. Older installations vary in colour codes and colours may fade with insulation exposure to heat light and ageing.

Building Electrical Wiring Color Codes

But looking deeper the color of the wires inside of the sheathing reveals that different colored wires serve different purposes.

Electric colour codes. 6 wiring color codes in europe iec for dc supply. This article describes the electrical wiring color code conventions for 120v or 240v ac circuit wiring in buildings in canada the us the uk. Wiring colour codes for ac and dc power distribution circuits have changed on numerous occasions and vary depending on region.

The color code is very similar to the usas color code. Click to expand infographic. Building wiring under the us national electrical code and the canadian electrical code is identified by colors to show energized and neutral conductors grounding conductors and to identify phases.

The older color codes in the table reflect the previous style which did not account for proper phase rotation. The ac power cable color code is nearly similar to the code used in the usa except exclusion of bare copper from ground wire. Electrical wiring colours coding standard for three phase electrical applications are standardised to aid the identification of individual wire phases.

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. The protective ground wire listed as green yellow is green with yellow stripe. There are some safety measurements that are to be followed while dealing with electrical wiring and the color codes of wires will help in implementing those safety measurements as a single code is followed in that particular jurisdiction.

Wiring color code standards are set in place by the canadian electric code or cec in canada. Some wiring color codes are set by national regulations but often a color code is specific to a manufacturer or industry. Wiring color codes in canada.

Electrical wiring color code guide. 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. Beyond that are general industry accepted rules about wire color that indicate their purpose.

The manufacturer of most narrow wires will color code. Other color codes are. In a typical electrical code some colour coding of wires is mandatorymany local rules and exceptions exist per country state or region.

The canadian electrical code cec regulates electrical wiring color coding in canada. Iec most of europe ac power circuit wiring color codes. With the help of color codes of electrical wires they can be easily and safely identified.