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piaccarino

04:26PM | 11/05/04
Member Since: 07/01/04
4 lifetime posts
Bvelectrical
The top of the panel has no more entrance holes and each of the existing holes has two or three wires in them. Can I use the holes that are on the side?

I see that the electricians that wired the house twisted two ground wires and put them in the ground bar, is this acceptable for neutral wires as well?

Any help would be appreciated!

Thanks,

PJI

tperez

05:48PM | 11/05/04
Member Since: 09/24/04
128 lifetime posts
You can use the side K.O.'s but make sure that they are protected especially if the panel is surface mounted. You wouldn't want to bang them up by accident.

Each wire should be in it's own termination lug. Double lugging is not acceptable and can be a dangerous practice.

Do you have any room left in this panel? This panel sounds pretty full to me.

U.S.M.C. Semper Fi !!!

piaccarino

06:21PM | 11/05/04
Member Since: 07/01/04
4 lifetime posts
When I started there were 7 positions open in the 200amp panel. Even before I started adding circuits there were hardly any openings on the neutral bars. Does double lugging apply to neutral and ground wire?

Tom O

01:58AM | 11/06/04
Member Since: 09/17/02
487 lifetime posts
Take a look at the labels inside your breaker box. It will usually tell you the acceptable range of wires. Most bus bars holes are acceptable for two equipment grounds of the same size, but you don't know for sure unless you read the label. Two neutrals in one hole or a neutral and ground in one hole is not acceptable in the NEC, so if your panel is old enough to show two neutrals in one hole, ignore that info.

Tom

piaccarino

04:01AM | 11/08/04
Member Since: 07/01/04
4 lifetime posts
The panel is new as the house was built in April, so I did a little research on the Square D QO panel and found that I can add ground bus bars which will solve my problem of having too few locations for ground/neutral wires. Since it didn't mention it in the bus bar installation instructions, I am assuming that the entire box is ground because it doesn't ask for a wire to run between the existing bars and the ones I purchased to mount to the back wall of the box. Is that correct or do I need to ground these new bars?

Thanks again guys!

PJI

tperez

06:14AM | 11/08/04
Member Since: 09/24/04
128 lifetime posts
That is correct. The panel itself is part of the grounding path. The panel back and/or side should have prefab holes for grounding bars. Use these holes and screws that came with the grounding bar. Self tapping screws are not listed for this purpose and will not provide a good bond.

U.S.M.C. Semper Fi !!!
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