Hi Everyone,

I dont know if my experiment is proper way to test circuit breaker, I
appreciate your suggestions and/or comments.

I have a Relocatable Power Tap that only has power on/off switch with
built-in 125VAC 15Amp circuit breaker. Since the circuit breaker is rated
for 15 amp, I connected two heatgun with total ampere rating of 20 amp and
turned the heat gun on to heat to draw maximum current. The circuit breaker
did not tripped even though the draw current was more than 15 amp. Why?

Then I added a third heat gun rated at 12 amp. Now I have total of 32 amps
of current draw, the circuit breaker finally tripped after few minutes. One
interesting thing I learned was the amount of time circuit breaker triped
vary among different power tap or surge protector. Some has quick respond
and some are little slow to overload current.

Is there a proper way to test circuit breaker?

Please advise.

Thanks,
San