[RE-wrenches] Leakage of current

[Jerry Shafer]

Is there any other power sources on this building, does the leak go away at
night, what is the voltage of this tingle?
Fun times!

On Sun, Jul 10, 2022, 2:10 PM Ron Young via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I have a customer that has self installed an array on a metal roof using
> APS Rapid shutdown devices. The roof rack is standard rails and L-feet. It
> is a high voltage system that will be connected to a Sol-Ark but it has yet
> to be connected, just MC cables from each set of 8 panels (3 altogether)
> run back to the location where the Sol-Ark will be installed. He raised a
> concern about what he described as leakage of current to the metal roof:
>
> "I did experience noticeable “leakage” of current to our roof prior to
> installation of the ground cable...Working around the metal roof one could
> definitely feel the tingle of the current, and it persisted until I had the
> ground cable connected.”
>
> My only guess is that possibly the APS devices are leaking at connection
> point but not sure how to check or he had an unprotected end of the MC
> cable touching the roof but that wouldn’t leak with the APS shutoff
> installed as it would need a signal from the transmitter that is not yet
> installed in the Sol-Ark. The panels are LG375’s.
>
> Ron
> earthRight Solar - Solareagle.com
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