Drake,
Most electricians like to keep the electrical ground and the lightning
ground separate which is probably a good idea, but lightning current is
likely to follow all paths because earth is common. The best practice is to
follow the Code and if the site is in a lightning area, subcontract that
part of the work to a local licensed expert (added cost) or put a clause in
your contract that protects you from acts of god and specify lightning.
Joel Davidson
----- Original Message -----
From: "Drake Chamberlin" <drake.chamber...@redwoodalliance.org>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Sent: Friday, March 06, 2009 6:47 AM
Subject: Re: [RE-wrenches] Lightning protection system
I didn't get a reply to the question about connecting the GEC to the
lightning protection system on the 8 story building. Although this may
seem like an intrinsically dangerous idea, a lightning protection system is
required to be bonded to the building grounding electrode system.
"250.106 Lightning Protection Systems.
The lightning protection system ground terminals shall be bonded to the
building or structure grounding electrode system."
It would therefore seem that the suplemental ground could connect to that
system as well, and in fact use the existing conductor. Any input would
be welcome.
Thanks,
Drake
At 09:19 PM 3/4/2009, you wrote:
Hello Wrenches,
Can the supplemental grounding electrode conductor be connected to a
lightning protection system?
We have a case where it would be difficult to run a GEC down a multi story
building, but have a convenient copper wire, from a lightning protection
system, that runs to a rod.
Thank you,
Drake Chamberlin
Athens Electric
OH License 44810
CO License 3773
740-448-7328
740-856-9648
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Drake Chamberlin
Athens Electric
OH License 44810
CO License 3773
740-448-7328
740-856-9648
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