[RE-wrenches] Accessibility of Equipment on Roof was Are PV Systems Mechanical Equipment?

[jay peltz]

Hi jason,

3 questions, 
I can't find the MNPV-AC in midnites price list, is this something custom or just new?
And 
if you don't need breakers why not just do a junction box on the roof.
and
the inspectors I've had have requested a disconnecting means on the roof or visible from the roof.  So I've done the enphase suggested switches on the roof, but no overcurrent.  It doesn't appear that is a requirement from your inspector?


jay

peltz power


On Feb 8, 2013, at 7:27 AM, Jason Szumlanski wrote:

> Oh, yes - that is a great application for the MNPV-AC. I didn't mean to imply there isn't a good use for them. In this particular instance the three MVPV-AC's are really subcombiners that get all get tied together in another subpanel at ground level. They really were not necessary, but made it more convenient and cost effective.
> 
> It's just interesting how Midnite advertises that they can be mounted as flat as a 3:12 pitch. What application would allow this mounting angle where it is still readily accessible? The spec/advertising seems to imply that these can be roof mounted in an AC string combining application.
> 
> The Soladeck combiner with fuses would appear to be non-code compliant in any situation. I would love for someone to refute that in a convincing way given the access requirements in 240.24(A).
> 
> Jason Szumlanski
> Fafco Solar
> 
> 
> On Thu, Feb 7, 2013 at 7:31 PM, jay peltz <jay at asis.com> wrote:
> Hi Jason,
> 
> Is it possible to install them on the side of a building?
> And Dan's suggestion for the remote midnite might be perfect.
> 
> jay
> 
> 
> On Feb 7, 2013, at 3:55 PM, Jason Szumlanski wrote:
> 
>> Jay,
>> 
>> I assume you mean pitched roofs, or not readily accessible flat roofs. This particular project happens to be a flat commercial roof, but with no permanent ladder or hatch. I really didn't have to use the MNPV6-AC's, but it made sense in this case (excluding the access issue).
>> 
>> Looks like my options are to remove the combiners or install a permanent access. Neither are fun options. Live and learn...
>> 
>> Jason Szumlanski 
>> Fafco Solar
>> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130208/d404352f/attachment-0003.html>