[RE-wrenches] Intermittent

[Jerry Shafer]

Wrenches/Hilton
Home run connections, confirm brand, had issue where it needed more volts
to overcome the poor connections. You will need to be on site with at least
two techs and check each homerun first but l have had module to module
issues. I have also had internal issues at the Jbox some brands are just
pushed in and don't seem to work well.
Got to love PV


On Thu, Mar 16, 2023, 2:15 PM Hilton Dier via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hello Wrenches
>
> Here’s a classic problem for you. I installed an array of 11 Trina 380s on
> a ground mount, commissioned January 6 of this year. It worked fine for a
> while, but in the last week it has had an intermittent power problem.
>
> For example, this morning it was putting out zero watts at the inverter. I
> measured voltage at the disconnect at the array and got zero volts. I
> checked all the connections and wires and it all seemed solid. I had to
> leave so I couldn’t start isolating modules. I came back this afternoon and
> it was producing an appropriate amount of power for the light conditions.
>
> What’s the most obvious thing that could be going on? Some kind of micro
> crack and thermal expansion?
>
> Thanks,
>
> Hilton Dier III
> Renewable Energy Design
> Missisquoi River Hydro LLC
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