[RE-wrenches] Replacing grounded inverters

[jay]

Oh boy.
Which BP models.  
I mean those things have had lots of trouble.

jay
peltz power
> On Jul 22, 2016, at 8:23 AM, August Goers <august at luminalt.com> wrote:
> 
> Glen,
>  
> It’s interesting you mention that you’re having AFCI issues with new TL inverters and old modules. We are too. We have a particular system with BP modules where we’re trying to figure out if we have a warranty claim situation. We’ve cleaned up all the DC-side wiring and still the Sunny Boy is tripping with AFCI errors. We think it is either corroded traces in the modules or perhaps bypass diode issues in the module j-boxes. More to come.
>  
> August
>  
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org <mailto:re-wrenches-bounces at lists.re-wrenches.org>] On Behalf Of Glenn Burt
> Sent: Friday, July 22, 2016 5:08 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Replacing grounded inverters
>  
> If you read some of the proposed changes for the 2017 NEC, it is looking life there will be no problem replacing isolated inverters with non-isolated versions. In fact the proposed wording seems to allow either USE, or PV wire to be used with non-isolated inverters explicitly going forward.
> It made me feel better about doing recent replacements.
> I'm having more trouble with the TL inverters and AFCI issues on older systems, however.
> From: Gary at Santa Ynez Valley Solar <mailto:Gary at SYVSolar.com>
> Sent: ‎7/‎21/‎2016 21:43
> To: re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>
> Subject: [RE-wrenches] Replacing grounded inverters
> 
> We are all facing having to replace the old transformer based inverters when they run out. Really difficult to find replacements. Against code to replace with transformer less ones. I wonder if a DC/DC transformer could be installed just ahead of the transformer less inverter for isolation purposes? Not clear on the concept.
>  
>  
> Gary
>  
>  
> Gary Gordon
>  
>    
>    www.SYVSolar.com <http://www.syvsolar.com/>
>    PO Box 688 
>    Santa Ynez, CA  93460
>    805 688-1213
>    NABCEP Certified Installer
>    CA Licensed Solar Contractor
>  
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