[RE-wrenches] 2011 NEC and impact in the field

[Dan Fink]

August;

There was a webinar from Solar ABCs in autumn 2010 that covered many of 
these new 2011 NEC  issues in detail, in a very practical way for the 
professional PV installer.

I believe you can download the whole thing from them right now after the 
fact.

I'm quite involved in teaching the PV / firefighter safety curriculum 
now, and signage is a big issue. In short-- engraved plastic signs are 
fine indoors or out, but don't penetrate an outdoor-rated box screwing 
them on! Stick-on vinyl signs need to meet UL 969. The webinar has some 
great photos of faded vinyl signs that have become unreadable.

DAN FINK
Executive Director,
Buckville Energy Consulting LLC
NABCEP / IREC / ISPQ accredited Continuing Education Providers



August Goers wrote:
> Hi All -
> 
> 
> 
> My shiny new copy of the 2011 NEC handbook just came in the mail and I've
> started reading through it trying to decipher what changes we should be
> expecting in the future. Although California is now just adopting the 2008
> NEC which I'm quite familiar with, many jurisdictions will honor the newer
> version of the code if we provide a good argument for them.
> 
> That said, does anyone who's checked out the new code have any interesting
> comments or advice on changes that might affect us out in the field? Section
> 690.31(E) is interesting in that it has quite a few detailed requirements
> for running DC circuits inside the building. Now it looks like MC cable is
> acceptable but that there are many more strict requirements about how the
> conduit or cable must be run. Labeling the DC conduit and J-boxes is also
> going to be a change we'll have to get used to. Hopefully there will be new
> reasonably priced label sources available. I'm sure I'm not alone in saying
> that it's always been hard to find cost effective labels which can hold up
> through the elements.
> 
> The grounding section also looks substantially updated.
> 
> As always, fun new things coming our way.
> 
> Best,
> 
> August
> 
> 
> August Goers
> 
> Luminalt Energy Corporation
> 1320 Potrero Avenue
> San Francisco, CA 94110
> m: 415.559.1525
> o: 415.641.4000
> august at luminalt.com
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