grounding electrode conductor busbar

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germainj

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lower florida keys
I have a question regarding section 250.649(c). It say's i can use a grounding electrode conductor busbar to connect my GEC taps together. I was wondering if anybody knows who manufactures them. Down here in the keys all new houses are built on stilts. Normally our services are built on the column at the corner of the house and the connection of the ufer and ground rod to meter breaker panel aren't a problem. When I build a service on a pole and run a underground feeder to the house the GEC from the rebar in the column usually isn't long enough to go to the panel in the house. I have used exothermic welds in the past but was hoping for an easier solution. Any ideas would be greatly appreciated.
 
If the AHJ would allow stubbing the rebar up on pour, accessible after the pour, this is a widely accepted and easy solution to that problem.

I'm not sure of the manufacturer of the busbars - I've seen them installed, but never actually installed them myself. For a house, the cost would probably be nearly as prohibitive as exothermic welding, I would think.
 
georgestolz said:
For a house, the cost would probably be nearly as prohibitive as exothermic welding, I would think.
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I don't know. A PK7 ground bar is just a few dollars.

For lugs and bars, Connector Manufacturing Company probably has the widest assortment. They're the OEM for the ground bars and lugs in many of the panels most of us use every day. http://www.cmclugs.com/oem_products.asp?a=oem_products_list Ilsco is a good pick too.
 
In Virginia several of the sheet metal fabricators make and size copper bus bar (thickness, length and drilled)per your requirements. I was on a Government job and the engineer spec'd a 24"x"24"x3/8", who knows why there were maybe 10 conductors terminated on this ground bar.
 
georgestolz said:
If the AHJ would allow stubbing the rebar up on pour, accessible after the pour, this is a widely accepted and easy solution to that problem.
Click to expand...

After a couple of months the rebar would be toast. The salty air wreaks havoc on any exposed metal down here.
 
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