Ground Rod Electrode ?

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250.56 Resistance of Rod, Pipe, and Plate Electrodes.
A single electrode consisting of a rod, pipe, or plate that does not have a resistance to ground of 25 ohms or less shall be augmented by one additional electrode of any of the types specified by 250.52(A)(2) through (A)(7). Where multiple rod, pipe, or plate electrodes are installed to meet the requirements of this section, they shall not be less than 1.8 m (6 ft) apart.




This is for all services where a rod is used no matter the size.
 
dezwitinc said:
The best part is that you only have to run a #6 to the ground rod whether the service is 200 amp or 4000 amp.
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Too bad not everybody knows this...:wink: I've seen ground rods OVERSIZED and the water bond UNDERSIZED.. go figure....
 
Ground rod versus Concrete encased

Ground rod versus Concrete encased

The State of Colorado adopted the concrete encased electrode a few years back and I am wondering what happens when the electrode, be it rebar, copper wire or the likes gets cut off during the construction of the house/home? Thanks in advance.:grin:
 
Inspectorcliff said:
what happens when the electrode, be it rebar, copper wire or the likes gets cut off during the construction of the house/home?
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I imagine you'll get out a chipping gun and expose enough to make an irreversible splice. :grin:
 
Inspectorcliff said:
The State of Colorado adopted the concrete encased electrode a few years back and I am wondering what happens when the electrode, be it rebar, copper wire or the likes gets cut off during the construction of the house/home? Thanks in advance.:grin:
Click to expand...

Its also required here in Utah. If it gets cut off & its a new building then more than likely your gonna have to break out the concrete & find it. Most "ufer" grounds are rebar & not copper because of this. (safer from the scavengers):mad:
 
Ever try folding the #4 over and sliding it into say a 1" pvc, duct tape the

end over?? The few times that I tried it, it was still there when I went back!!

No see copper, no take copper.
 
benaround said:
Ever try folding the #4 over and sliding it into say a 1" pvc, duct tape the

end over?? The few times that I tried it, it was still there when I went back!!

No see copper, no take copper.
Click to expand...


I was on a job with a painter with a slight problem, he was cutting 18-2 bell wire for the copper, now thats a problem...
 
dezwitinc said:
The best part is that you only have to run a #6 to the ground rod whether the service is 200 amp or 4000 amp.
Click to expand...
250.53E States "Supplemental Electrode Bonding Connection Size" what If It Is the Primary Electrode, Would you not us Table 250.66?
 
Yes, but 25.66(A) states that the connection to a rod or pipe electrode "shall not be required to be larger than 6 AWG copper...."
 
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