Ac wiring code. Phase 1 red phase 2 black phase 3 blue neutral white ground green with yellow stripe. 22 usa wiring color codes for dc supply. The color code is very similar to the usas color code. This is a video for a straight air.
How to wire an hvac ac unit. Electrical codes are in place to protect you the homeowner. Brown orange and. 3 wiring color codes in europe including uk iec.
The code provides rules for sizing electrical boxes for the number of wires and wiring devices in the box. Black red and blue are used for 208 vac three phase. 21 usa wiring color codes for ac supply. 31 wiring color codes in europe iec for ac supply.
Ac power 120208240 volts ac power comes in many different types based on how many volts the wires will be carrying. 212 277480 volt ac wiring color codes in usa. Us acthe 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 groundin principle any other colors except these may be used for the power conductors. 1 what are wiring color codes.
Allowable wire and cable types and sizes are specified according to the circuit operating voltage and electric current capability with further restrictions on the. Electrical wiring is an electrical installation of cabling and associated devices such as switches distribution boards sockets and light fittings in a structure. Wiring color code standards are set in place by the canadian electric code or cec in canada. The other two types of cable which are often used to extend wiring in a system wired with metal conduit are type mc metal clad and type ac armor clad.
Type ac cable commonly called bx does not have a grounding conductor. The colors adopted as local practice are shown in table below. Furnaces electric water heaters heat pumps central air conditioning units electric dryers electric stoves or cooktops and built in microwave ovens must be on dedicated circuits. When are color codes applied to wiring.
These general guidelines will give you the basics of what electrical inspectors are looking for when they review both remodeling projects and new installations. If you were to gut an air conditioner and disconnect all the wires you could use this video as a template to wire it all back up. For wires that will be 120 208 or 240 volts the following wiring color standards are used. 211 120208240 volt ac wiring color codes in usa.
Most local codes are based on the national electrical code nec a document that lays out required practices for all aspects of residential and commercial electrical.