0
\$\begingroup\$

In my shed, i've got a 12V 120AH leisure battery and 30A MPPT solar charge controller, on the shed roof there are three 100w 12V solar panels.

I wonder if I need to ground any of those? If yes what is the best way of doing it? There is no way to connect to house earth cable and there is no metal parts outside of the shed.

\$\endgroup\$
0
\$\begingroup\$

I would say it depends on your height vs surroundings. If you are up on a hill and are likely to draw lightning, I would recommend grounding.
More importantly, you should place spikes slightly away from the panels and slightly above them so that they draw charges from the air and attract a lightning before it hits the panels.
Those spikes should be connected with a very thick wire, but usually the rails made for that purpose. The panel frames should be connected together with thick wires, but you should know that having a contact between 2 different metals causes galvanic reaction when there is any moisture, and one metal gets spent.
It depends where you are at and what do you have available.
I would suggest reading up on lightning protection and lightning arresters/surge protectors. You will give yourself the best protection hen you know a little more about those subjects and understand how (and why) they work.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.