[RE-wrenches] Rapid shutdown questions

[jay peltz]

HI Dan,

If you are doing 24v battery or below, you should be able to ignore the battery rapid shutdown part.
IE under 30v

jay

peltz power

On Aug 30, 2014, at 2:04 PM, Dan Fink wrote:

> Dave; I feel your pain as do many others.
> I feel like I've been Rick-rolled on the whole 690.12 thing. As a firefighter, I thought rapid shutdown was a great idea for roof mounted arrays. Shut down fast from a central location on the ground, get up on the roof, do what needs to be done, fast and no worries other than the fire itself.
> 
> But disconnects hanging 15 feet in the air? Allowed to mount them in the attic through a locked door to a disused lavatory behind a file cabinet labeled "beware of the leopard?" - meets code.
> Rapid shutdown for ground mount arrays? Just walk over to the danged thing and throw the clearly-labeled disconnects, the central signage told you where they are. Problem solved.
> All just plain silly, counterproductive and expensive for the homeowner. As I work exclusively with off-grid systems, most of them ranging from small to tiny, I've been seeing their potential client's eyes go wide as dinner plates when I inform them "By the way, Colorado just adopted NEC 2014, and it'll be an extra $1500 to comply, sorry that's a 33% increase in your system cost......"
> What's happening in the real world is folks getting the household 120/240 AC wiring signed off as "powered by gasoline generator" and they do the solar later, and change the gate combo so the inspector can't come back. Now *that's* counterproductive.
> 
> Robin, glad to hear clarifications are coming in 2017. 
> 
> Dan Fink
> Buckville Energy
> IREC Certified Instructor™ - PV Installation Professional and Small Wind Installer
> 970.672.4342
> 
>  
> 
> 
> On Fri, Aug 29, 2014 at 11:08 AM, Dave Click <daveclick at fsec.ucf.edu> wrote:
> While I share Robin's optimism, I should also note the "NEC 2017 690.12 committee" referred to is not the code making panel. While it does have (at least) one firefighter representative among a majority of PV industry personnel, there's no guarantee that the Code Making Panel approves this committee's proposal. There could very well be a competing proposal from firefighters that requires cell-level shutdown every time a red truck drives within 1/4 mile of an array, because "SAFETY!"
> 
> DKC
> 
> _______________________________________________
> List sponsored by Redwood Alliance
> 
> List Address: RE-wrenches at lists.re-wrenches.org
> 
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out or update participant bios:
> www.members.re-wrenches.org
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20140830/e6a8d03c/attachment-0002.html>