• We will be performing upgrades on the forums and server over the weekend. The forums may be unavailable multiple times for up to an hour each. Thank you for your patience and understanding as we work to make the forums even better.

Why 5 ohms ground resistance?

Merry Christmas
Status
Not open for further replies.

tom baker

First Chief Moderator & NEC Expert
Staff member
Location
Bremerton, Washington
Occupation
Master Electrician
I have a new water pumping station that specified 5 ohms ground resistance for the grounding system, with a ground ring, ground rods, and a Lyncote chemical ground rod, and a ufer ground.

The
 

dereckbc

Moderator
Staff member
Location
Plano, TX
Re: Why 5 ohms ground resistance?

Ok if it is specified and using all the electrodes you listed, there should not be much of a problem achieving 5 ohms. Sounds like a telephone office spec to me, at least those are methods I have used to get 5 or less. Did you mean Lyncole?

[ January 14, 2004, 04:06 PM: Message edited by: dereckbc ]
 
Status
Not open for further replies.
Top