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Joined: Mar 2001
Posts: 2,056
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I feel I need to run 2 circuits for the GDOs (3 of them) if a receptacle, or lighting outlet is also supplied. (My own 1/2 HP units draw 5 amps each)
Thoughts?
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Joined: Jan 2004
Posts: 1,507
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From a real world prospective, you are not likely to have a problem. It certianly is not a fire or shock hazard but I'm sure if you operated all 3 GDO's at the same time you might trip the breaker. Depending on what else you have on the circuit- air compressor, freezer or other larger appliances, you might trip the breaker when you use only one GDO.
So this guy has a 4 car garage- he/she can afford the additional circuit(s).
George Little
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Joined: Dec 2003
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I have a three car garage, and I ran a single circuit to all three openers. I fully expected to have to run a second circuit for the last of the three openers. But, the circuit held when I opened or closed all three at the same time. (added one opener at a time over several years) I did run a separate circuit for the lights and receptacles. Are you trying to avoid installing a panel in the garage? The NEC makes it clear that if you run a multiwire branch circuit (sharing the same neutral with two hots) to a detached garage, that it constitutes a single circuit, and a panel (and the ground rods) are not required.
Earl
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Joined: Apr 2005
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I also have 3 openers on same circuit. The only time I have tripped a breaker was when I had an elect heater plugged into same circuit I was using table saw and someone else was using skill saw at same time.
It also had no affect on doors because they are on circuit by themselves.
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Joined: Mar 2001
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Thanks, guys.
It is an attached garage, and my main concern was NEC compliance regarding the aforementioned article. As far as performance, it is probably a crap shoot. If someone operates all 3, the CB might not handle the starting currents.
BTW,
I ran a 2nd circuit.
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Joined: Dec 2004
Posts: 1,064
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ground to the left or ground to the right on the opener receps?
Dnk..
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Joined: Aug 2005
Posts: 251
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1 dedicated circuit for the 3 openers sounds perfect.
Shake n Bake
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Posts: 806
Joined: October 2004
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