Phase 1 phase 1 wiring should be brown. Thermostat wiring and wire color chart thermostat wiring colors code.
4 Wire Thermostat Wiring Color Code Onehoursmarthome Com
Ac wiring diagram colors. Us ac power circuit wiring color codes. Iec dc power wiring color code. I explain what each of the letter terminals are for the voltage path how it works and also the normal color code used. 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. The colors adopted as local practice are shown in table below. I discuss how to wire the contactor and what the difference is between the.
It is better to take a good up close photo of the old thermostat and what terminals the colored wiring are terminated. Color of wire and termination. All the above mentioned color code for electrical wiring is to transmit ac current from the mains. Phase 2 phase 2 wiring should be orange. Black red and blue are used for 208 vac three phase. In case of wiring dc power like solar or computer networks the following standard has to be followed.
Dc power installations can be divided into earthed or unearthed systems. R the r terminal is the power. Conductors larger than 6 awg are only available in black and are color taped at the ends. Basic thermostat wiring colors air conditioner systems always remember when changing a thermostat for a new thermostat to take a photo of the colors and where they go on the old thermostat or get a pencil and paper and write it down. Brown orange and yellow are used for 480 vac. These are the wire color coding standards that are used in the united states.
Phase 3 phase 3 wiring should be yellow. Neutral neutral wires should be grey. Ground ground wiring should be green or green with a yellow stripe.
Gallery of Ac Wiring Diagram Colors
