Okay, the thermostat says 22.0 amps. Its wiring is 12 gauge.

The heaters show 2.1, 4.2, and 6.3 amps depending on size of heater. Their wiring is 14 gauge. I cannot find a max amps rating.

In order run multiple heaters off 1 thermostat, I must wire it in parallel. Does this compound the power draw (1+1+1=3), or distribute it evenly (1×1×1=1)?

I could easily split the kitchen/living room into 2 circuits if needed, just need another thermostat. I would like to keep them as 1 circuit.

The instruction manual states "The maximum amperage load you can put on 1 circuit breaker is limited to either 80% of the circuit breaker capacity, or the maximum amperage rating of the thermostat, whichever is lower."

My kitchen/LR heaters would be 6.3+6.3+4.2 for a total of 16.8 amps. Is this correct as the total draw? If so, 16.8 is less than 20, but more than 80%. Or is the most its pulling is 6.3 amps because its parallel?

Here is where I got wattage, it's on the box with a sq ft equivalent. Is this output and not relevant to power draw?

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