I am installing two 1200 watt strings on a
corrugated iron roof. I intend to pass the
conductors through the roof using two
compression glands, which will be about a couple of inches apart (50mm).
If this was an AC installation, I would be worried
about eddy currents formed by the rapidly
changing magnetic fields inducing current in the
corrugated iron.
Is this an issue with solar DC? A static DC current
will not induce a current. The current will change
slowly with cloud cover but I don't think that will be a problem. Will my Victron charge controller do anything that might cause a problem?