How to Build a Low-Tech Solar Panel?

Re:How to Build a Low-Tech Solar Panel? by abraae on Wednesday October 06, 2021 @04:05PM (#28777729)

I was thinking to do this but I had some concern about electrolysis, as electric water tanks are designed for AC, not DC.

But I never learned if this was a real concern or not.

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Re:How to Build a Low-Tech Solar Panel? by opwieurposiu on Wednesday October 06, 2021 @05:19PM (#28778583)

In north america both terminals of the heating element are galvanically isolated from the tank, so this is not an issue if the wiring is installed with due care.

In countries like brazil and germany that allow "bare wire" heating elements you might have trouble with the tank lining plating onto the element or visa versa.

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Re:How to Build a Low-Tech Solar Panel? by abraae on Wednesday October 06, 2021 @05:36PM (#28778799)

Thank you! I will check the regs for my country.

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Re:How to Build a Low-Tech Solar Panel? by SkyPuncher on Thursday October 07, 2021 @09:39AM (#28786077)

There's a slew of DC powered electric water heaters. Relatively common on RVs and travel trailers.

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