Any 20 amp stab in circuit breaker is rated at 80%. A 20 amp breaker will trip at around 16 amps
I run 8+ 20a circuits for my Christmas display every year
I can tell you that before I had 8 circuits I loaded them to close to 20a & they ran for hours = never tripped
One I loaded to maybe 22a & it took sveral minutes to kick off
I was in adding up my load calc for the circuit & dermined it was over 20a
Originally Posted by 007brian
I had a job inspected and I had 18 amps on a 20 amp breaker. Inspector turned it down. I fought but lost. Asked Cutler Hammer Rep and he told me all stab in c/b's are only rated at 80%. That's what the inspector giged me on. That's where this thought comes from. Brian
What did you have loaded that was 18a? Motor...heating ?
Commercial or residential?
I realize this thread is quite old, but I have a related question for the Dimplex 240V 2000 watt forced fan heater. If using a single heater with a wall mounted thermostat, does this require a 3 conductor cable, or is a 2 conductor sufficient? Where does the fan get its power?
I'm curious, I have a new insulated porch and am considering baseboard or a device such as the Dimplex. Any advice would be appreciated.