[RE-wrenches] 2014 NEC

[Phil Forest]

All in all, not longer, glad to say. 
Strings can have more modules, so there's fewer home runs. Optimizer wires are longer than module wires, they even reach when installing modules in landscape, so fewer jumpers. Be thoughtful when mounting optimizers to rails so it's easy to connect after module is clamped down. Bolts that attach optimizers slide into rails from the end (UniRac SM type rails). You supply your own nuts and bolts. They supply a star washer for bonding optimizer to rail for EG. 
We mounted optimizers to modules on one job when using UniRac Sunframe. SunFrame is a pain in my neck, optimizers or not. 
Phil Forest
South Mountain Company

> On May 20, 2014, at 1:33 PM, Will White <William.White at rgsenergy.com> wrote:
> 
> Phil,
>  
> Do you find that the DC optimizer adds to the amount of time on an install?
>  
> Thanks,
> Will
>  
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Phil Forest
> Sent: Tuesday, May 20, 2014 1:26 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] 2014 NEC
>  
> Will,
> No problems with inspectors for us in MA, regarding rapid shutdown, since we recently switched to using SolarEdge central inverters with optimizer under each module, for roof mounted installs. 
> So far so good. They seem well made and engineered. Tip: you have to enable the arc fault protection when commissioning, ships disabled. 
> 
> Phil Forest
> South Mountain Company
> 
> On May 20, 2014, at 10:59 AM, Will White <William.White at rgsenergy.com> wrote:
> 
> Wrenches,
>  
> Is anyone else having problems with inspectors and the 2014 NEC?  In Mass we’re having all kinds of issues with inspectors requiring/allowing an array of different things for 690.12 rapid shut down ranging from roof top disconnects, disconnects on the side of a house 20’ up, disconnects in attics, or only disconnects that can be activated on the ground.  It varies between inspectors.
>  
> We’re also having problems with one inspector requiring arc fault breakers on Enphase even though there are no UL listed arc fault breakers that can be back fed or he wants us to run the trunk cable in a raceway. 
>  
> It’s getting very difficult to install in Mass.
>  
> Thanks,
> Will
>  
> Will White
> Operations Manager - New England
> RGS Energy
> 64 Main St. |Montpelier, VT 05602
> tel 802.223.7804 | mobile 802.234.3167 | fax 802.223.8980
> RGSEnergy.com | william.white at rgsenergy.com
>  
>  
>  
>  
>  
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