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How to wire Cadet T5 thermostat to control 240 volt

Cadet 120-208-240 volt mechanical thermostat wired to control 240 volt outlet

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Cadet T5 mechanical thermostat


Resources:
Cadet T5 series thermostat manual
How to wire 240 volt plugs, outlets etc
Basic house wiring
Safe electric wiring

240 volt 15 amp Receptacles
Look at rating plate of device for amperage
15 amp devices can be put on either 15 or 20 amp breaker

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5029 brown, white, ivory single
5661-Cr yellow single
5089-I ivory single
Decora white
Stainless single cover plate

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Leviton single hole plates
Stainless 2-gang plate

You cannot plug two 15 amp 240 volt air conditioners into the same plug without running two separate 15 amp lines, on different breakers, to the receptacle.
Buy:
5662 15 amp 240 volt receptacle double
Leviton 6-15R 15 amp 240 volt receptacle
Decora white
240 volt straight blade receptacle 240 volt 20 amp Receptacles
Look at rating plate of device for amperage
20 amp devices can be put on20 amp breaker, but not 15 amp breaker.

Buy 20 amp receptacle
5461 single 20 amp 240 volt receptacle
5461-W single 20 amp white
Decora ivory
Stainless single cover plate

Buy:
Leviton single hole plates
Stainless 2-gang plate
Leviton receptacle plate

You cannot plug two 20 amp 240 volt air conditioners into the same plug without running two separate 20 amp lines, on different breakers, to the receptacle.
Buy:
5462 double 20 amp  240 volt dual receptacle outlets
5822-W brown, ivory, white
Decora white
240-120 volt combination receptacle
240-120 volt receptacle This combination receptacle lets you plug in both 120 volt lamp and 240 volt window air conditioner.
How to wire: Install 12-3 wire. Hots are connected to one double breaker inside breaker box, and Neutral is connected to Neutral busbar. Single breaker is not used. See image of 12-3 wiring inside breaker box

Option: You can draw a Neutral wire from any nearby 120 volt outlet or ceiling box, and this Neutral connects to silver screw on receptacle, however the 240 volt Hot wires must come from a dedicated breaker that serves only that 240 volt receptacle.

Caution for double receptacles: using 20 amp outlet (15 amp is pictured on left)
You cannot run more than 20 total amps at one time. Volts x amps = watts
For example if 240 volt window air conditioner pulls 16 amps, and you have 1500 watt 12.5 amp space heater on 120 volt plug, it will only work if neither is ON at same time. However if you are using 240 volt 16 amp air conditioner, and plug in 120 volt light with two 100 watt bulbs (200 watts), then the light will pull 1.6 amps and total amp draw is within capacity of 20 amp circuit.

Buy:
15 amp Ivory, Brown or White
20 amp Ivory and brown
Resource:
Basic household wiring
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