ground rod at parking lot luminare pole base (again)

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M. D. said:
but is it permitted by NFPA 780 L.P.C. to be used as the lightning protection electrode??
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Yes it is. 780 makes provisions for ground ring, CCE, and rods. One of the most popular methods is using the building steel columbs as down conductors and the CCE in the foundation as the electrode. Does that sound anything like a light pole?
 
dereckbc said:
Yes it is. 780 makes provisions for ground ring, CCE, and rods. One of the most popular methods is using the building steel columbs as down conductors and the CCE in the foundation as the electrode. Does that sound anything like a light pole?
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Not really .

The reason I asked the question is ,I read a Newsletter 6/27/07 from Mike Holt ,I'm not sure of the title , but he stated in the comment portion that it could not be. I'll try to post a link
 
okay I enjoy these type of threads I like to learn. Are we saying that we have created a seperate ground by the footings of the pole and or adding a ground rod or ground ring? Now by creating a seperate ground (I hope this is right wording) at the pole is that not earthing? and then we connect the pole to the grounding conductor? Would this be a correct assesment then, bonding the pole to the grounding conductor is essentially connecting to different ground points to the same service? Or am I missing something here?
 
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Does anyone know what Mike holt was refering to when he wrote this in the comment portion of the newsletter that I linked to???

http://www.mikeholt.com/newsletters....y&letterID=407

Reply from: Mike Holt
The study published in the IEEE August 1970 by Mr. Eugene J. Fagan and Mr. Ralph Lee evaluated steel rebar in concrete as a suitable 'grounding electrode.' Note: A grounding electrode as required by the NEC is not for lightning protection, so the study evaluated the rebar/concrete for surge and fault current, not lightning.
Summary, steel rebar is an excellent electrode as required by the NEC, but it is not permitted by NFPA Lightning Protection Code to be use as the lightning protection electrode.
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MD,
NFPA 780 clearly permits the use of concrete encased electrodes for the lighting protection system in new construction in section 4.13.3.
Don
 
Thanks Don , But I find it hard to believe that Mike, in June of 07, was unaware of 780 4.13.3 ?? perhaps he meant the sole electrode? either that or it was a long day and he slipped up ??
I only ask the question because it seems to fly in the face of the comment he made , I am not the one arguing that it does not qualify as the lightning protection electrode. His newsletter went to over 25,000 subscribers and he is highly regarded as an expert, I just whish I knew why he stated that it is not permitted to be used as the L.P.E..
Anyway,... thanks for the article and number. If I ever meet him I guess I'll ask him.

this is a link to a great document for any interested
http://www.cupcars.org/slsdesign/pdf/tel_course.pdf
 
Aw heck Bob , it don't taste that bad,.. and because I responded I have learned a good deal more than I knew before or would have otherwise been likely to learn in this same period of time.:-?
 
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