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bonding panels in multi family homes

Posted By: Joey D

bonding panels in multi family homes - 07/29/05 03:59 AM

It's way past my bed time so maybe thats why I don't see this in the book.
I have a 2 family house and i ran my ground to the meter socket, 2 gang and did not jump the panels together with an additional bonding conductor. I never go to the meter socket and just jump the panels together but this time I did it differently and the inspector picked up on it.
Posted By: poorboy

Re: bonding panels in multi family homes - 07/30/05 10:32 AM

What's the setup? Main breakers in the meter trim and 4 wires to each panel, or meter trims only and 3 wires directly into the 2 panels via the shortest route? My ground rods always go to the meter trims on residential services, and the cold water to the panel, which is usually a main breaker panel. What was the inspector's specific objection?
Posted By: Joey D

Re: bonding panels in multi family homes - 07/30/05 10:21 PM

It's a resi 3 gang meter socket with just SEU into the 3 panels. I went from the meter to the 1st rod then to the water and the second rod, #4 copper.
His response was the panels are next to each other so they need to be bonded together. I would think they were bonded together thru the bar in the meter socket.
Posted By: Joey D

Re: bonding panels in multi family homes - 07/30/05 10:26 PM

408.40 is what he showed me.
Posted By: Electricmanscott

Re: bonding panels in multi family homes - 07/30/05 11:46 PM

Joey, 404.28 does not have anything to do with the grounding electrode connection to the service. That is the requirement for grounding the cabinet itself and the connection of the equipment grounds that terminate within that panel. You need to look at 250.24 specifically A 1 That says The grounding electrode conductor "connection can be made at any accesible point from the load end of the service drop or lateral to and including the terminal or bus to which the grounded service conductor is connected at the service disconnecting means."
This to me says the gec can terminate at any place on the line side of the service you wish.
Mike Holts book seems to confirm what I say here. He says the connection can be made at the service drop, the meter, or the disconnecting means.
Like you I'd like to see some other thoughts on this. Either way I think your inspector is barking up the wrong tree citing 404.40.

Feel free to name the town.

[This message has been edited by Electricmanscott (edited 07-30-2005).]
Posted By: Joey D

Re: bonding panels in multi family homes - 08/01/05 02:13 AM

Is there anything listed as far as grounding panel boards or cans that are mounted next to each other? I will be seeing him tommorow afternoon and will talk it over with him.

[This message has been edited by Joey D (edited 08-01-2005).]
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