As long as we're already on the subject, BESIDE the NEC requiring it,
why is it that we have to bond the ungrounded conductor on the battery
side of a DC system??? I believe that we are the only country in the
world that has this requirement. As long as all the system cabinets,
mounting plates, housings and etc are grounded, what is gained by
including a battery conductor? I'm not talking about HV inputs from an
array, just the battery busses.
I have been asking this question since forever, and the only explanation
seems to be the recital of the Code. Obvious problems can occur when
there is a + grounded piece of equipment in the mix, since - well, it's
obvious.
Matt T
boB Gudgel wrote:
Larry Crutcher, Starlight Solar wrote:
Hi Jay,
An interesting quandary indeed.
This is another good example of an application that I was trying to
grill Sunpower about --- as far as grounding their modules that need
to be positive grounded
in order to take advantage of their higher efficiencies. They
couldn't answer this simple question. How would you use one in an
airplanefor instance ?
There are solar powered airplanes (sort of) Is a large faraday
shield enough ? Sort of like the ground radials that Larry has
mentioned. I would
imagine that if you get large enough radials that it ~might~ approach
being a virtual ground. Works for antennas though.
I like questions like this one. Sure makes one think a bit.
boB
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & 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
------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.392 / Virus Database: 270.13.25/2256 - Release Date: 07/23/09 06:02:00
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & 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
