We are still learning about concrete encased electrodes in the Mid-West. On metal frame buildings the #4 Cu or a piece of rebar is brought up and connected to the steel. Then they want to sheet rock the area for an office. Does the connection to the steel have to be accessible ? Any suggestions ? Alan--
In the past, we have placed two-gang tile rings in strategic places (similiar to telephone rough-in) to provide access to GEC connections to the GE on GWB (sheetrocked) walls. Finish work requires a two gang blank cover.
#100680 - 12/10/0601:42 PMRe: Accessibility of GEC connection
We do the same out here in California (Uferland) as Earlydean suggests. In residential work, the electrode is normally brought up in an outside wall as close to the service location as is possible. Mounting the ring facing out with a weatherproof plate rather than in through the drywall can save some headaches when nobody "wants that cover on my beautiful drywall" or goes and installs closed-back cabinetry in front of it.
[This message has been edited by electure (edited 12-10-2006).]
#100681 - 12/10/0603:05 PMRe: Accessibility of GEC connection
Thanks everyone. 250.68(A) is what brought this up. The plaster rings seem to be the direction to go to. As an aside, some electricians around here are driving the ground rods inside the basement because of the copper thieves. Alan--
Alan-- If it was easy, anyone could do it.
#100686 - 12/12/0603:07 PMRe: Accessibility of GEC connection
Alan You must have a much harder working class of thieves there than I have ever met. The idea that such a low life would do the work needed to get the rod back out of the earth is one I had never considered. Or do they just steal the GEC and leave the rod alone. -- Tom Horne
[This message has been edited by tdhorne (edited 12-12-2006).]
"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison