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. Dc power installations can be divided into earthed or unearthed systems.
Ac Wiring Question Mr2 Owners Club Forum
Ac wiring diagram colors. All the above mentioned color code for electrical wiring is to transmit ac current from the mains. I discuss how to wire the contactor and what the difference is between the. Ground ground wiring should be green or green with a yellow stripe. Neutral neutral wires should be grey. Black red and blue are used for 208 vac three phase. These are the wire color coding standards that are used in the united states.
I explain what each of the letter terminals are for the voltage path how it works and also the normal color code used. Thermostat wiring and wire color chart thermostat wiring colors code. Color of wire and termination. Us ac power circuit wiring color codes. Phase 1 phase 1 wiring should be brown. In case of wiring dc power like solar or computer networks the following standard has to be followed.
Phase 2 phase 2 wiring should be orange. 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. R the r terminal is the power. It is better to take a good up close photo of the old thermostat and what terminals the colored wiring are terminated. The colors adopted as local practice are shown in table below. Phase 3 phase 3 wiring should be yellow.
Brown orange and yellow are used for 480 vac. Conductors larger than 6 awg are only available in black and are color taped at the ends. Iec dc power wiring color code.
Gallery of Ac Wiring Diagram Colors
