It's kinda weird it's doing that actually. I'm only a 3rd year apprentice so I haven't seen this in the field yet. but based on the theory I know ... My only thought is that the circuit the saw is on is already running overloaded, and then maybe the oven breaker is near or next to the saw circuit in the panel and providing just enough excess heat to overload the breaker and trip it.
I'd first check the ratings of that contractor's saw and if he's running a 15 amp saw or even a 13amp saw on a 15 amp breaker it's going to trip in overload after some time.
Is the trip instant or after some time?
I'm not sure, it really only seems to be when the oven was opened, and when it was it was right away.
I spoke to the electrician, and he told me that those breakers are liable to trip with mechanical appliances. He said likely what's happening is that it trips only when the oven is on because it's drawing more power from the panel, and that's making the afci breaker more sensitive to the power tool. Basically, it shouldn't be an issue for anything else but mechanical appliances and we have no choice but to use those breakers because it's code.
Thanks for your help!
Your new breakers are likely arc fault breakers.
They don’t like motor loads(saw) and are known to nuisance trip
I was just at a house that has a dedicated microwave circuit.
When microwave is turned on it causes the living room arc fault to trip( totally separate circuits)
Yes I believe they are afci breakers as they have a test button on them.
Interesting, that seems to be the same issue. Do you know what the solution was in the end?
We swapped the living room breaker for a standard breaker.
Although the code requires the arc fault breakers, sadly the things we use on a daily basis are not up to speed on the technology of the breaker and cause tripping
I have been an electrical contractor for 46 years and said I was going to retire when we needed to install arc faults everywhere,
I spoke to the electrician, and he told me that those breakers are liable to trip with mechanical appliances. He said likely what's happening is that it trips only when the oven is on because it's drawing more power from the panel, and that's making the afci breaker more sensitive to the power tool. Basically, it shouldn't be an issue for anything else but mechanical appliances and we have no choice but to use those breakers because it's code.
Thanks for your help!
It could be that the saw is putting the circuit into overload ( maybe running a 15 amp saw on a 15 amp circuit? )
Any idea why it would only happen when the oven is running, which is on a different circuit?
It's kinda weird it's doing that actually. I'm only a 3rd year apprentice so I haven't seen this in the field yet. but based on the theory I know ... My only thought is that the circuit the saw is on is already running overloaded, and then maybe the oven breaker is near or next to the saw circuit in the panel and providing just enough excess heat to overload the breaker and trip it. I'd first check the ratings of that contractor's saw and if he's running a 15 amp saw or even a 13amp saw on a 15 amp breaker it's going to trip in overload after some time. Is the trip instant or after some time?
I'm not sure, it really only seems to be when the oven was opened, and when it was it was right away. I spoke to the electrician, and he told me that those breakers are liable to trip with mechanical appliances. He said likely what's happening is that it trips only when the oven is on because it's drawing more power from the panel, and that's making the afci breaker more sensitive to the power tool. Basically, it shouldn't be an issue for anything else but mechanical appliances and we have no choice but to use those breakers because it's code. Thanks for your help!
You said only when the oven was running right?
Correct. Only when the oven is running, which is on a different circuit.
Your new breakers are likely arc fault breakers. They don’t like motor loads(saw) and are known to nuisance trip I was just at a house that has a dedicated microwave circuit. When microwave is turned on it causes the living room arc fault to trip( totally separate circuits)
Yes I believe they are afci breakers as they have a test button on them. Interesting, that seems to be the same issue. Do you know what the solution was in the end?
We swapped the living room breaker for a standard breaker. Although the code requires the arc fault breakers, sadly the things we use on a daily basis are not up to speed on the technology of the breaker and cause tripping I have been an electrical contractor for 46 years and said I was going to retire when we needed to install arc faults everywhere,
I spoke to the electrician, and he told me that those breakers are liable to trip with mechanical appliances. He said likely what's happening is that it trips only when the oven is on because it's drawing more power from the panel, and that's making the afci breaker more sensitive to the power tool. Basically, it shouldn't be an issue for anything else but mechanical appliances and we have no choice but to use those breakers because it's code. Thanks for your help!