Grounding electrode

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splinetto

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Missouri
We are working on a new bldg that will attach to an existing bldg...At this point the inspector says it is one building....The water service will come overhead from the existing building....Do we have to take the GEC all the way back to the existing water service( which would cause extensive damage ) or is it possible to just hit building steel on the existing bldg?
 
splinetto said:
We are working on a new bldg that will attach to an existing bldg...At this point the inspector says it is one building....The water service will come overhead from the existing building....Do we have to take the GEC all the way back to the existing water service( which would cause extensive damage ) or is it possible to just hit building steel on the existing bldg?
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Is this new building getting it's own service?
 
Dennis Alwon said:
Is this new building getting it's own service?
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Yes it will have its own service....It looks like the whole project was pieced together over time.....The new servive will be fed from a transformer that provides one of the servives to the blg.......You can see a single insulated wire leaving that service equip but cant tell where it goes.....
 
I'm with Dennis.
A little more info, please. Does the addiotion have it's own service.
If not, you EGC's shoul take care of the feeders and my only question would be directed at bonding the steel shells together.
 
Well here is what we do if a building is not attached structural wise but fed from another building on site that feeder has is own grounding conductor inside from that other buildings service . In florida we still install a ground rod to that panel to its ground bar to a ground rod at that remote building and water and building steel . Now if it has its own service and meaning its own lateral feeder from a transformer we still install ground rods . now if its under the same roof we do not install ground rods just treat it like a sub feeder in a common building . But no you dont run all the way back with a grounding electrode conductor. take care
 
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I'm not sure I understand ,.. nothing new there..

If your building steel meets the requirement of 250.52(A)(2) hit that with the GEC then go find the water main and jump from it to the steel and don't forget the CEE
 
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