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

[Jason Szumlanski]

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*



On Thu, Feb 7, 2013 at 6:27 PM, jay peltz <jay at asis.com> wrote:

> I'm with your inspector on this.
>
> I don't install fuses or breakers on roofs
>
> jay
>
> peltz power
>
>
> On Feb 7, 2013, at 12:02 PM, Jason Szumlanski wrote:
>
> While I haven't completely convinced the latest inspector about PV not
> being mechanical equipment, I'm running into another issue.
>
> I decided to try out the new Midnite MNPV6-AC combiner for Enphase
> circuits. Because there are overcurrent devices inside, the inspector now
> insists that NEC 240.24(A) applies and that the enclosure must be readily
> accessible, meaning you have to reach it without a ladder. That would seem
> to make the MNPV6-AC as a roof mounted solution, or Soladeck combiner
> boxes, or any other combiner box incorporating overcurrent protection,
> pretty much useless on a pitched roof or flat roof without a permanent
> access ladder or hatch.
>
> I'm debating whether to go to battle on this one or just capitulate.
>
> *Jason Szumlanski** *
> *Fafco Solar*
> *
> *
> P.S. To answer benn's question, there is no definition of 'mechanical,'
> but it does define 'equipment,' and it's clear to me that PV does not fit
> the description.
> mbers.re-wrenches.org
>
>
>
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