> Craig wrote:

> In addition, our electrical service is grounded at three points:
> 
>     - the inside sub-panel installation that connects to the
>       copper water pipes in the old part of the house,
>     - the 50' long, separate, seamless tubing that supplies
>       water to the new part of our house, and,
>     - a ground rod at the outside transfer switch panel, which,
>       under UL certification, is suitable for service entrance
>       and may be used as a main panel or feed-through to a
>       sub-panel.

NEC says that's fine - IF the multiple grounds are tied together.

>From a lightning protection standpoint, one ground is better.
Or really heavy cable tying the multiple grounds together.

--   Philip

_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/

To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com

Reply via email to