[RE-wrenches] Module level electronics mounting

[Jason Szumlanski]

You might run into 110.3(B). The manufacturer's instructions are likely to
say the DC leads of the PV module are to be plugged directly into the MLPE.
For example, the Enphase IQ7 microinverter instructions state, "Connect the
DC leads of each PV module to the DC input connectors of the
corresponding microinverter
or adapter." Extending the DC leads of the PV module could easily be
construed as a violation. And these would be pretty low voltage circuits,
voltage drop could become an issue in terms of performance depending on
distance.

Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956


On Thu, Sep 28, 2023 at 5:06 PM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I like the idea but haven’t used it yet.
> I don’t see any code issues with the longer wiring?
>
> Jay
>
>
> On Sep 28, 2023, at 10:52 AM, Kirk Herander via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
> All,
> Has anyone ever mounted MLEs (optimizers, microinverters, RSDs) on the
> perimeter of the array or elsewhere instead of underneath the PV module?
>
> I never was a fan of climbing up on a pitched roof and removing modules to
> replace the electronics. And with a recent knee replacement, I won't be
> providing this service again.
>
> In post-surgery downtime this simple idea surfaced. My next job if it's
> practical is to create jumper module cables to extend down to the
> electronics, mounted just outside the array on their own rail. Then create
> a good-looking TBD cover to shield the MLEs from direct sunlight, snow, etc.
> --
>
> *Kirk Herander / **kirkh at vermont.solar <kirkh at vermont.solar>*
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 32st Anniversary 1991-2023!!*
>
> dba Vermont Solar Engineering
>
> 802.863.1202
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