Ac Control Wiring Color Code
Bare protective ground.
Ac control wiring color code. Red a second line voltage or hot wire. Thermostat wiring and wire color chart thermostat wiring colors code. It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit. Color of wire and termination.
Black use for line voltage or hot wire. The ac power cable color code is nearly similar to the code used in the usa except exclusion of bare copper from ground wire. The yellow wires terminate at your compressor contactor via an air handler. The following requirements on wire color codes apply in canada.
The canadian electrical code cec regulates electrical wiring color coding in canada. They control your air conditioning system. Building electrical wiring color codes conventions for 120v or 240v a c circuits. The yellow wires connect to the y terminals on your thermostat.
R the r terminal is the power. The green wire underneath your thermostat connects to the fan of your furnace or air handler. All the above mentioned color code for electrical wiring is to transmit ac current from the mains. Single phase line hot black or red.
In principle any other colors except these may be used for the power conductors. 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.