1500 watts plus 2700 watts = 4200 watts. Divide that by the voltage (120) and you are pulling 35 amps. There isn't a 35 amp single pole breaker that is commercially available to the general public.
I will be willing to bet that your "HT room" is fed by either a 15 or 20 amp breaker. By code, any "branch circuit breaker" is only allowed 80 % of it's rated capacity. That means that you are only allowed to have a maximum of 12 amps on a 15 amp breaker, by code.
That also means that you are only allowed to have a maximum of 16 amps on a 20 amp breaker, by code. You are pulling WAY too much power for the circuit. Breakers trip because of ONE reason: HEAT.
Now, the breaker's "guts" will be heated one of two ways. Fast ( short ) or slowly ( overload ) You, legally, need to have more than one circuit feeding you "HT room". Hope this helps.
Good luck in all you do and may God bless.
Circuit breakers trip for 1 of 3 reasons. First is an uncontrolled flow of current such as can occur when a short circuit or a grounded circuit happens. The uncontrolled flow of electrons will quickly overheat and pop a breaker.
Second is an excessive amount of current for an extended period of time. An example would be running 16 or 17 amps of current through a breaker rated for 15 amps. It won't trip immediately but it won"t take long to overheat and pop.
Third is old age. Breakers are mechanical devices that wear out over time. As current flows though them when the load is energized, the elements of the breaker heat up and expand.
When the load turns off, the elements cool down and contract. Eventually it will begin to lose it's strength and fail. It sounds like your problem was probably a little too much current for the breaker.
You can have the breaker upgraded to a larger amperage for a small cost. If you're mechanically inclined, you may be able to do it yourself.
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