[RE-wrenches] Batteries in 4' tall crawl space

Fri Aug 3 11:02:38 EDT 2018

Another way to do this that I often use for Offgrid is to build a small
slab that a battery van can get to on an outside wall of the house. Pick a
wall of the house that this will not be an eyesore. 

Build up a 2 x6 wall
with a removable top and side. In the summer, a fan ventilates it outdoors.

In places where it is cold, the wall into the crawlspace, from the new
box, is open and the batteries are at the temperature of the crawlspace.

No bending or cramped conditions and easy to replace batteries. Easy
access for fire people to shut down. 
Dave Angelini Offgrid Solar
"we go
where powerlines don't"
http://members.sti.net/offgridsolar/ [1]
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text 209 813 0060

On Fri, 3 Aug 2018 02:12:04
+0000 (UTC), Jerry Caldwell  wrote:    Thanks for the advice everyone.
These would be sealed AGM batteries. The access issues are definitely food
for thought.

 Cheers,
Jerry            On Wednesday, August 1, 2018,
10:30:36 PM PDT, Ray  wrote:        

Never laid on my stomach, I just have
kneel pad I use for lots of stuff but it works good here too. I never get
my face that close to the battery any way. Usually 2 to 3 ft is good. 
Ray
Walters
Remote Solar
303 505-8760
  On 8/1/18 2:21 PM, Glenn Burt wrote:   

Interesting idea, but it looks like to service them you would have to
lay on your stomach and get your face right in there? Not my idea of a good
time! 

-Glenn 

FROM: RE-wrenches  [3] ON BEHALF OF Ray
 SENT: Monday,
July 30, 2018 3:32 PM
 TO: re-wrenches at lists.re-wrenches.org [4]
 SUBJECT:
Re: [RE-wrenches] Batteries in 4' tall crawl space   

Article 110.26
covering clearances in front of electrical equipment applies. I worked on a
couple like that, and I didn't like it. Very hard to move the batteries,
and Combined with H2S, you are in what OSHA considers a confined hazardous
space.  

Another way to use that crawl space is to build a trap door
access from the floor above. This can work really nicely, and put the
batteries right under the inverter without violating article 110.26. I
think I saw a system that either Allan Sindelar or Windy Dankoff did like
that. I've tried it a few times, and everyone (customers and inspectors)
was happy. Here's a pic of some HUPs in a floor vault just below the
inverter: 

Ray Walters

Remote Solar

303 505-8760

On 7/30/18 8:37 AM,
Dana wrote:   

Safe working clearance is 6'-8". 

I have been confronted
with this issue in the past taking over other's systems care. This is a
head banger & a major safety issue if something goes bad. If the batteries
are 18-20" tall that only leaves anther 28-30" between bottom side of the
floor joist ">The installation is bent over back-heavy move situation. I am
assuming you have a dirt or gravel floor to move across? 

It seems like a
good use of space up front but the reality of the install plagues you down
the road. 

If it is WLA batteries it is the worst of situations. 

Even if
this is not inspected, please avoid this situation.

----------------------------------------------------------------------------

Dana Orzel Great Solar Works, Inc.  

C - 208.721.7003  

Idaho
Contractor - # 028765 Idaho PV # 028374 

NABCEP # 051112-136
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"Responsible Technologies for Responsible People
since 1988"  

P Please consider the environment before printing this
email. 

FROM: RE-wrenches  [6] ON BEHALF OF Jerry Caldwell
 SENT:
Saturday, July 28, 2018 6:10 PM
 TO: re-wrenches at lists.re-wrenches.org [7]

SUBJECT: [RE-wrenches] Batteries in 4' tall crawl space   

Wrenches,  

I
have a customer who wants to have batteries installed in a 4' tall crawl
space / short basement. Are there any accessibility code issues with
installing batteries in a crawl space? Does the NEC address this? 

Thanks,
 Jerry Caldwell      

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