MT off grid
New Member
- Joined
- Jan 23, 2022
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- 571
I have two growatt 3000tl lvelm-es inverters ran in split phase, both internal N-G bond screws have been removed, I did the bonding in the panel. When both inverters have AC input to use the inverters as battery chargers I get 2.3 amps on the ground at the box, if i take the bonding screw out of the box I get an open ground on my tester. With the N-G bond taken out of the box amd I supply AC in power I then show a N-G which I would guess is because my main house panel is now supplying the ground reference and the growatt is passing it through the inverters. When I have zero wires connected to the growatts I show no N-G bond but when I connect all of the wires, cables etc. I get a N-G bond on the AC in and AC out even when I am not supplying AC power to the AC in. I have tried running them Separate through the panel as single phase and I get zero amps on the ground but as soon as I supply AC in I again show 2.5 amps on the ground, if I only supply AC to one of the inverters I show zero amps on the ground (guessing two inverters on separate phases are supplying a ground to each inverter which os causing the ground to carry current)
I really hope my rambling makes sense, typing as I remember things, any help would be great since signature solar seems to not habe any idea what's going on.
I really hope my rambling makes sense, typing as I remember things, any help would be great since signature solar seems to not habe any idea what's going on.
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