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Electrical Inspections Contains discussions about electrical systems. This includes receptacles, panels, wiring, etc.

 
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  #1  
Old 10/25/08, 3:19 PM
David P. OKeefe's Avatar
David P. OKeefe David P. OKeefe is offline
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Default Need help understanding panel

I would like some help here. I have a couple of questions regarding this panel. #1 Where is the ground wire for this panel? I could not find a ground. No connection to the meter, I could not find a ground rod outside. I can't even find a ground wire coming out of the panel?
#2 A question for this GFCI breaker. What is this aluminum wire for? Could someone explain this GFCI system for me?
#3 What is the main disconnect rating in this panel? I see two 60 amp breakers labeled "main disconnect". Would this panel be rated 120 amp service?
This panel belongs to a friend of mine who allowed me to inspect his house so I could get some experience. As far as the ground wire is concerned, I am used to seeing a bare wire coming out of the panel and connecting to ether the water meter or a ground rod. I understand how a GFCI breaker works, but I thought they were a single breaker and not doubled? I am also used to seeing a main breaker at the top of the panel, Which makes it easy to determine service rating. I am just a little confused with this setup. Thanks in advance for your help.
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  #2  
Old 10/25/08, 6:38 PM
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Marc D. Shunk Marc D. Shunk is offline
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Default Re: Need help understanding panel

#1) If you can't find one, it might not have one.
#2) The original CH GFCI breakers (mid 70's) had a little wire that fed power between the bottom half breaker portion and the top half electronics portion. No big deal.
#3)That's a split bus panel, so the top 12 slots are all "mains". Check the wire gauge feeding those main lugs to determine the service size, in this case, or the rating of the main lugs from the panel's sticker. Take whichever one is less. I've got money on 200 amp, but there's no good way to tell from pictures. You were there.
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Old 10/25/08, 9:40 PM
Bruce D. Pinel Bruce D. Pinel is offline
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Default Re: Need help understanding panel

Does your friend know what the 2 wires are crossing over the 2 main conductors near the main lugs? One of them looks like a bare wire.



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Old 10/25/08, 9:47 PM
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Marc D. Shunk Marc D. Shunk is offline
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Default Re: Need help understanding panel

Quote:
Originally Posted by bpinel View Post
Does your friend know what the 2 wires are crossing over the 2 main conductors near the main lugs? One of them looks like a bare wire.
Who gives a rat's ***. That's compliant and safe.
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Old 10/25/08, 11:28 PM
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David P. OKeefe David P. OKeefe is offline
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Default Re: Need help understanding panel

Thanks for the replys. Those two wires across the top are the neutral and ground for the sub panel.
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Old 10/26/08, 10:03 AM
Joseph M. Whitt Joseph M. Whitt is offline
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Default Re: Need help understanding panel

Quote:
Originally Posted by Marc D. Shunk View Post
#1) If you can't find one, it might not have one.
#2) The original CH GFCI breakers (mid 70's) had a little wire that fed power between the bottom half breaker portion and the top half electronics portion. No big deal.
#3)That's a split bus panel, so the top 12 slots are all "mains". Check the wire gauge feeding those main lugs to determine the service size, in this case, or the rating of the main lugs from the panel's sticker. Take whichever one is less. I've got money on 200 amp, but there's no good way to tell from pictures. You were there.

I agree with these statements



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Old 10/27/08, 3:11 AM
Mark Thorman Mark Thorman is offline
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Default Re: Need help understanding panel

The third terminal down on the left side may be the ground, can't really tell without a better pic.

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  #8  
Old 10/27/08, 9:23 AM
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David A. Andersen David A. Andersen is offline
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Default Re: Need help understanding panel

Yup, safe as a crosswalk on the interstate!



"Insanity: doing the same thing over and over again and expecting a different results." Albert Einstein

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