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Grounding Outside Main Breaker / Bonding Neutral and Ground

Grounding Outside Main Breaker / Bonding Neutral and Ground

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  #1  
Old 05-22-14, 08:53 AM
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Grounding Outside Main Breaker / Bonding Neutral and Ground

I have a newly installed 200 amp outside breaker panel. It is my understanding that this panel is the single bonding point for neutral and ground. So, in this panel I have a #4 bare copper wire that comes up from the grounding rods and is then bonded to neutral with a lug.

I have four wires running from this outside panel into my basement to the (sub panel) for my whole home. An insulated #6 ground wire is attached to the case of the outside panel and then comes into the main panel grounding buss bar. There is a separate isolated neutral buss bar, as there should be.

The problem is that I don't see how the case of the 200 amp outdoor panel is securely grounded in the first place. The neutral lugs are isolated and the outdoor breaker did not come with any bonding screws or similar.

Should I simply move the insulated ground cable running to the sub-panel over to the other neutral lug... or is it ok as it is?

The attached image is of the outdoor 200 amp breaker.

Any ideas are certainly appreciated. Thank you!
 
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Old 05-22-14, 09:06 AM
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I'm pretty sure a bonding screw goes where I have the red arrow. The copper is stuck in too far to allow the screw to go in.
 
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Old 05-22-14, 10:14 AM
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The panel label should show the bond screw location. I too think it goes where the red circle is drawn.
 
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Old 05-22-14, 07:40 PM
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What is the small wire marked green that comes into the enclosure with the service entrance wiring and is terminated in a lug bolted to the box? Where is the other end terminated?
 
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Old 05-22-14, 11:03 PM
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Would have expected the 200amp box to come with it already bonded, with a copper screw, but perhaps the screw (can't quite make it out) in between the two neutral lug screws is for that purpose.

CasualJoe - think the green marked wire is the ground wire for conduit to sub panel in house.
 
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Old 05-23-14, 07:01 AM
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CasualJoe - think the green marked wire is the ground wire for conduit to sub panel in house.
Strange installation, I would have expected to see a bonding bushing on the conduit for that purpose, but things up there may be done differently.
 
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Old 05-24-14, 11:49 AM
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Looks kind of like PVC stuck into the knockout ? Should have had a male adapter on the end of the PVC with a lock nut on the inside to secure the FA .

But , I have seen worse .........

I agree , should have a green ground screw bonding the neutral to the enclosure .

There are ways to address this .

God bless
Wyr
 
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Old 05-24-14, 02:20 PM
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Looks kind of like PVC stuck into the knockout ? Should have had a male adapter on the end of the PVC with a lock nut on the inside to secure the FA .
I agree. I see no lock nut.
 
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Old 05-25-14, 08:17 PM
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Sorry for the delay in replying. I did eventually find a very large green screw (almost thrown away with the box!) and it does indeed go where the red arrow was drawn. Thank you all for your help.

The guy I had install it didn't think there was anything wrong with the way he left it.

The smaller green cable is an insulated 6# that brings ground into the sub panel in the basement. The pvc pipe goes to a 90 with removal face on the basement side and all of that is secured. It is cut flush inside the outdoor breaker, but I don't see any harm in it.

Anyway, thanks again for the quick replies.
 
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Old 05-25-14, 09:36 PM
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The guy I had install it didn't think there was anything wrong with the way he left it.
Is this guy an electrician?

The PVC conduit needs to be physically attached to the enclosure.
 
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Old 05-26-14, 11:01 PM
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No, he is not. I'm going to pull the pipe through, cut a new piece and then glue on a proper threaded ended. Aside from that the install looks alright to me. Thanks again!
 
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