Electrical shock with wet panels

[Sunking]

Electrical wiring is protected with DC surges arresters.

It is not possible for surge arrestors to protect any wiring.

[marcland]

Hi,

This happened in a system with SMA back up with SB and SI.

The SB is 4000TL. Modules are grounded with normal grounding from the structure.
Electrical wiring is protected with DC surges arresters.

That happens only on when touching the glass not frame or other parts. It is like the electricity jumping through the glass. Electricity comes even through the water up to the hand.

[sensij]

I would like to add that modules are grounded in the frame and in the negative pole,

Can you upload a line drawing that shows your grounding scheme? What kind of inverter is being used? At what point in the installation are you getting shocked? Ungrounded systems would be safer, but only newer inverters are designed to operate that way.

[Sunking]

I would like to add that modules are grounded in the frame and in the negative pole,

That is why you got shocked.

[marcland]

Hi all,

I am an integrator of Solar panels.

I had problems in 2 of my installations with getting shocked when touching the PV module glass when this one is wet and I am touching another surface.

I would like to know if any one else had a similar problem and if this is normal.

I would like to add that modules are grounded in the frame and in the negative pole,