HI All, Thanks for the insights and the confirmation.
I've just never seen it before. jay peltz power On Jan 25, 2014, at 9:21 AM, Ray Walters wrote: > I've heard that the entire array can build a surface static charge, though I > don't recall getting zapped by the array. Seems like better grounding would > take care of that. I get popped touching ungrounded metal like my truck. It > can be very alarming, much more voltage than you might expect. > If the well has a steel casing, that makes an excellent grounding electrode. > Just tap a lug into the side of it, and bond to the array racking, and pole. > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 > > On 1/25/2014 9:25 AM, Larry Crutcher, Starlight Solar Power Systems wrote: >> Hello Jay, >> >> I'm in Yuma, Az where humidity is often under 5% and static discharge is a >> severe pain in the….finger. Curious person that I am, I once measured the >> distance of a static arc to estimate the voltage being generated from my >> lamb skin slippers sliding on carpet. My best guess is it was above 20kV. >> >> So, he may be experiencing quite a static shock but his mind is relating it >> to the PV solar gear. A simple test is to hold onto the wire after the >> initial discharge. If the shock stops, it was static discharge. >> >> Thank you, >> >> Larry Crutcher >> >> >> >> >> On Jan 24, 2014, at 6:56 PM, jay peltz <j...@asis.com> wrote: >> >> Hi all, >> >> Here is a new question. >> I believe it's static electricity. >> >> System: standalone 2 x 44voc 165 watt modules in parallel >> Powering a pump sq flex( yea installer didn't do it right) dry ground. >> No batteries or any other power in the area, no LCB or other electronics. >> Pole mount, dpw in concrete with galvy pole >> Wires are not attached to pole/ rack in any way >> It's been very low humidity 5-10%, with 10-20 mph wind >> No rain totally dry >> >> Here is what happened. >> Person with one hand touched pole and and other hand touched the USE-2 >> insulated wire from the modules, got way shocked. Checked the wire no cracks >> etc and again 44voc max >> >> Happened a second time, but this time his sleeve brushed the pole while he >> was moving the wires, again shocked. >> >> Again, I think it's static as I have no other explanation. This kind of >> weather is unknown where I live. I now live in a true desert vs a rain >> forest and never moved. >> >> Thoughts? >> >> Thanks >> >> Jay >> >> Peltz power >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
