I am looking at adding a Garage Heater to my garage on a 30A circuit. The heater is on a dedicated 240V circuit run on 10 AWG wiring with a 30A Siemens household breaker.
My heater is a Dr Infrared 6000W heater that is controlled by a wall mounted thermostat. In even the coldest temperatures, I anticipate it will not run for more than 20-35 minutes at a time before cycling off(garage is very well insulated, brand new energy efficient build).
The heater instructions recommend a 35A breaker and 8AWG wiring (to be 100% code compliant, I get it).
In my case, looking at it from watts (which I know is not the real way, but close), 30 AMPS is 7200 watts. My 6000 watt load represents 83% of the rated capacity. Just a bit over the 80%. Since in my application I am certain that my load is non-continuous (i.e. that heater will NEVER run for 3+ hours straight), am I safe to use on this circuit?
Would appreciate some opinions!