Thermostat Wiring – How to Connect Thermostat to Two Hot Wires

thermostat

I am replacing a thermostat with a basic single line break thermostat and my electrical box has only has two hot wires each carrying 120 V. The wiring diagram of the thermostat calls for connecting the hot wire to L1 marked on the thermostat. Since I have two hot wires is it ok to wire either one to either of the thermostat wires?

The thermostat I am replacing was already wired this way but I am wondering if it was done right.

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Best Answer

You should be fine connecting it either way around

Since this is a mechanical thermostat, it should work just fine wired in either way around; of course, if it doesn't work, you can try swapping the wires so they are connected to the other terminal.