Grounding subpanel

[Cavie]

I think I saw a thread about this last week but can't remember. Is it ok to ufer ground a subpanel along with the main panel ufer? this may be a second post. I could not find the first one.

 

[dereckbc]

You can add any supplemental ground you want to branch panels. They just cannot be used in lieu of the EGC requirements from the supply panel.

 

[allenwayne]

I think I saw a thread about this last week but can't remember. Is it ok to ufer ground a subpanel along with the main panel ufer? this may be a second post. I could not find the first one.

My question would be , why would you want to supliment the grounding conductor ????? The sub panel already has a seperate grounded and grounding conductor.Or are you asking if you can use the ufer and run a 3 wire to the sub from the supply/main panel ???

 

[ramdiesel3500]

I must have missed something recently. What does "ufer" mean???

 

[Bob NH]

http://www.scott-inc.com/html/ufer.htm

http://www.psihq.com/iread/ufergrnd.htm

Ufer is the name of the guy who invented the concrete encased electrode (At least that is what the internet lore says). Thus, a concrete encased electrode is called a Ufer. It should be capitalized, like Ampere or Volt or Watt, also named after people.

 

[iwire]

I must have missed something recently. What does "ufer" mean???

Many people call an NEC concrete encased electrode a 'uffer'

This is because Herbert G. Ufer did a lot of work with concrete encased electrodes. He was trying to ground buildings that contained munitions during WWII.

From what I have read Ufer's concrete encased electrodes where more elaborate than what the NEC requires.

 

[Cavie]

the guy rand a 4 wire to the subpanel but for some reason I don't know, the is a # 10 insulated green run in the wall to the footer steel.

 

[LarryFine]

the guy rand a 4 wire to the subpanel but for some reason I don't know, the is a # 10 insulated green run in the wall to the footer steel.

Maybe the #10 was installed first, and later the correction was made.

 

[infinity]

Many people call an NEC concrete encased electrode a 'uffer'

This is because Herbert G. Ufer did a lot of work with concrete encased electrodes. He was trying to ground buildings that contained munitions during WWII.

From what I have read Ufer's concrete encased electrodes where more elaborate than what the NEC requires.

I agree, although we seem to use the terms Ufer and CEE interchangeably there is quite a difference between the two. The Ufer is far more elaborate.