If you can t find the c wire or need help with the difference between a 2 wire thermostat and a 4 wire thermostat call a professional electrician.
How to find c wire for thermostat in attic.
A how to demonstration of wiring your xxfirestat or power attic vent thermostat.
How to wire two new attic fans to a new switch box with power pertaining to attic fan thermostat wiring diagram image size 939 x 712 px and to view image details please click the image.
This means that you do have a c wire you just need to find the end of the lead near your thermostat.
If there is a wire going to letter c you have a c wire.
Step 8 install the thermostat box cover and use the screwdriver to set the thermostat so that the fan will kick on when the attic reaches 105 degrees.
Alternately look for thermostats that specifically say they do not require a c wire for operation.
On the back plate you will see a number of letters.
C wire coming into thermostat look blue wire in c terminal source in the above image a blue coloured wire is coming into terminal marked c.
If you don t see the c wire in the thermostat head to your furnace.
If a c wire was run it should be connected here even if it is not connected at the thermostat.
Simply remove your current thermostat face from its baseplate and look for the terminal labeled with the letter c if this terminal has a wire attached to it you have an active c wire.
Open up the access panel and check the terminals.
The c or common wire can make or break your thermostat installation.
Connect the black thermostat wire to the black cable wire the white thermostat wire to the white cable wire and the ground wire to the green ground screw in the box.
Here s what you need to know.
Check your furnace to see if you have one.
Here s why the c or common wire can be an important part of your smart thermostat.
G wire c terminal.
The cover is either held onto the back plate by snap clips or one or two small screws.
This will convert g into c and y into k.
You may find that a c wire connection and lead is present.
If you find a c wire here it probably means that the other end is stuffed into the wall just behind the thermostat.
Thermostats can get this constant power through a common wire or c wire it is easy to see if you already have a c wire connected to your system.
Here is a picture gallery about attic fan thermostat wiring diagram complete with the description of the image please find the image you need.
On the c wire adapter s thermostat side press down a tab to open the corresponding terminal.