Hmmmm. Better take a good look at the grass on your side first John Drucker - Mobile Email
----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Tue Oct 11 19:40:27 2011 Subject: RE: Grounding Thanks all - we got this one covered. Seems that a unified school district here in San Diego County had a paranoid operations manager some time back who required that lightning strike protection be retrofitted on ALL schools in the district. Those equipped with sprinklers got bonded ... never mind that we haven't had a building struck by lightning here in, I dunno like, FOREVER. I guess he came from Oklahoma or someplace where it's an issue. If I were to be reincarnated, I hope it will be as a public employee. That way, I could go on drunken spending sprees with money that I don't really have to account for and buy stuff that I don't really need. That would be fun. SML No offense intended to the diligent public employees who subscribe to this forum, of course. :-) -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Tuesday, October 11, 2011 3:25 PM To: [email protected] Subject: Re: Grounding 13: 10.6.8*In no case shall the underground piping be used as a grounding electrode for elec- trical systems. A.10.6.8.1While the use of the underground fire protection piping as the grounding elec- trode for the building is prohibited, NFPA 70requires that all metallic piping systems be bonded and grounded to disperse stray electrical currents. Therefore, the fire protection piping will be bonded to other metallic systems and grounded,but the electrical system will need an additional ground for its operation. Bonding is being connected to the ground system. The sprinkler system (specified for the underground portion) can not be used as a ground system. The last time I looked (more than a few days now) NEC said that all metal piping capable of becoming energized shall be grounded. That typically is interpreted as ALL. Must confess I haven't dug through the nasty details since it hasn't been a common problem. Roland On Oct 11, 2011, at 3:04 PM, Ron Greenman wrote: > NEC requires all metal to be bonded, not grounded (semantics sort of > since > both go to earth, but there is a difference between bonding and > grounding). > I'd look it up but have to go to a meeting. > > On Tue, Oct 11, 2011 at 2:59 PM, Travis Mack, SET > <[email protected]>wrote: > >> There is a local jurisdiction here that requires it. He tells me >> it is in >> the NEC. >> >> >> On 10/11/2011 2:58 PM, Steve Leyton wrote: >> >>> Assuming it's in there somewhere, where does 13 and or 24 speak to >>> attaching bonding or grounding wires to sprinkler systems? >>> Question >>> posed to me today and I had to admit that I don't know ... hate >>> it when >>> that happens. >>> >>> >>> >>> Steve Leyton >>> >>> PROTECTION DESIGN& CONSULTING >>> >>> >>> 2851 Camino del Rio South, Suite 400 >>> >>> San Diego, CA 92108 >>> >>> ------------------------------**------------------------------**- >>> >>> Ph: 858.751.2930 - ext. 102 >>> >>> Fax: 858.751.2933 >>> >>> Cell: 619.972.5696 >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL:<http://fireball.**firesprinkler.org/mailman/** >>> private/sprinklerforum/**attachments/20111011/20e3d0e9/ >>> **attachment.html<http://fireball.firesprinkler.org/mailman/private/spri nklerforum/attachments/20111011/20e3d0e9/attachment.html >>> > >>>> >>> ______________________________**_________________ >>> Sprinklerforum mailing list >>> Sprinklerforum@firesprinkler.**org >>> <[email protected]> >>> http://fireball.firesprinkler.**org/mailman/listinfo/ >>> **sprinklerforum<http://fireball.firesprinkler.org/mailman/listinfo/spri nklerforum >>> > >>> >> ______________________________**_________________ >> Sprinklerforum mailing list >> Sprinklerforum@firesprinkler.**org <[email protected]> >> http://fireball.firesprinkler.**org/mailman/listinfo/ >> **sprinklerforum<http://fireball.firesprinkler.org/mailman/listinfo/spri nklerforum >> > >> > > > > -- > Ron Greenman > Instructor > Fire Protection Engineering Technology > Bates Technical College > 1101 So. Yakima Ave. > Tacoma, WA 98405 > > [email protected] > > http://www.bates.ctc.edu/fireprotection/ > > 253.680.7346 > 253.576.9700 (cell) > > Member: > ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC > > They are happy men whose natures sort with their vocations. -Francis > Bacon, > essayist, philosopher, and statesman (1561-1626) > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attach ments/20111011/57cf4803/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum -------------- next part -------------- An HTML attachment was scrubbed... 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