Several years back I was reading an exchange between one of our E&I inspectors and a EE, here is a snip-it:
In particular, please note that there is no NEC requirement for a grounding electrode of any sort unless the structure is “served” by a utility, separately derived source, a feeder, or 2 or more branch circuits.
This is in reference to ufer grounds at a structure without power and NEC 250.50 which states:
All grounding electrodes as described in 250.52(A)(1) through (A)(7) that are present at each building or structure served shall be bonded together to form the grounding electrode system.
I have 2 questions:
1) When does the NEC consider a building or structure to be served?
2) The engineer indicated its "served" by a utility, separately derived source, a feeder, or 2 or more branch circuits. I'm not familiar with IEE standards or other code bases, is this a reference from some other place or maybe just his opinion? He seems to be on to something.....
A similar situation has arisen so I'm going back to old information for reference.......
In particular, please note that there is no NEC requirement for a grounding electrode of any sort unless the structure is “served” by a utility, separately derived source, a feeder, or 2 or more branch circuits.
This is in reference to ufer grounds at a structure without power and NEC 250.50 which states:
All grounding electrodes as described in 250.52(A)(1) through (A)(7) that are present at each building or structure served shall be bonded together to form the grounding electrode system.
I have 2 questions:
1) When does the NEC consider a building or structure to be served?
2) The engineer indicated its "served" by a utility, separately derived source, a feeder, or 2 or more branch circuits. I'm not familiar with IEE standards or other code bases, is this a reference from some other place or maybe just his opinion? He seems to be on to something.....
A similar situation has arisen so I'm going back to old information for reference.......