This new type NM-B 14-3 electrical wire has color coded conductors that are easy to spot and understand: Building Electrical Wiring Color Codes & Conventions for 120V or 240V A/C Circuits We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Some of the wire color images here were adapted from data provided by the Malta Resources Authority's excellent document on Harmonisation of Wiring Colour Codes - cited below.
Line and neutral colors code#
We point out with photo-examples that while wire color code theory is nice and all that, in the real world of working on existing buildings, wires are not always reliably color-coded and colors may in fact be impossible to discern. 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.įor each color code table we include authority citations and links to sources of codes, books, standards and wiring guidelines. This article describes the electrical wiring color code conventions for 120V or 240V AC circuit wiring in buildings in Canada, the U.S., the U.K.
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