Thermostat wire comes in various weights.
Heater thermostat wiring.
Thermostat wiring diagrams for heat pumps heat pump thermostat wire diagrams.
By the use of an adjustable set point the job of the thermostat is to turn on either the heating or cooling system to maintain the desired room temperature in the home and to turn off the system when the desired temperature is achieved.
One is for cool and the other is for heat hence the abbreviation rh and rc.
Thermostat wire is just a big spool of bundled color coded wires.
The line is connected to the l 1 terminal while neutral or second line is connected to the l 3 terminal.
The common wire sometimes referred to as the c wire is what s responsible for delivering constant power to your thermostat.
The 18 refers to the gauge and the 5 refers to how many individual wires are inside the cable.
These run from the thermostat to the furnace and control the heat in a home.
Two wire thermostats typically have a red and a white wire.
Route supply wire from wall thermostat to wall can.
Color of wire and termination.
R the r terminal is the power.
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.
For programmable thermostats and smart thermostats c wires are essential for setting a schedule or having your heat or air conditioner turn on at a desired temperature while some units can run without a c wire even brands like nest recommend having one for optimal.
Green the green wire connects to the fan.
Remove a knockout in the wall can and attach the supply wire to wall can with a strain relief connector leaving a 6 inch wire lead for later use.
If you have heat and ac you ll need 18 5.
The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system.
Black color is neutral while red is phase or line and the yellow green wire is used for ground earth.
The wiring connection for both single phase 120v and 240v are same i e.
Yellow the yellow wire connects to your compressor.
Unlike the low voltage thermostats that control central heating and air conditioning systems electric baseboard heaters use line voltage thermostats that are installed as part of the full voltage circuit powering the heater.
Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and cool while an air conditioner uses the process of refrigeration to only cool the central air conditioner will usually be paired with a gas furnace an electric furnace or some other method of heating.
Orange this wire connects to your heat pump if you have one.
To wire an installed wall thermostat to a cadet in wall fan heater.
Red now there can be two separate wires for this.
Always turn off the power before starting work.
The water heater element is connected to the thermostat via t 2 as hot and l 4 as neutral.