About to execute a battery upgrade on our 1-yr old Passport and add a 200W solar kit. At the risk of asking a really basic question, I have a switching idea that just came to me. Of all I have read here on solar, didn't see much discussion on switching/controls.
Ordered this popular switch (
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1) back when I thought I might do two battery banks. Now I'm just going with a single 2x6V setup for 232amps/20hr ... so the switch is overkill, but I think I still want to put in a cut-off ability on the incoming solar feed to the batteries, led me to a little 'reverse' thinking on the normal way you'd wire this switch ...
Proposal: Put the battery+ lead on the common pole of the switch, put the solar+ on Pos-1, and put the trailer load+ or Pos-2. Then, on Pos-1, we have solar to battery with no parasitic or trailer load, Pos-2 battery feeds trailer load with no solar charging, and Pos 1+2, all connected w/ solar charging & trailer load. Would mount this on the outside of my battery box, and use a short #8 from solar to switch carrying probably 10-12 amps, then use my existing cables (#2 or #4) from switch to battery & loads.
Like I said, risking 'too simple to ask', but does anyone see issue with the solar, battery & load feeds shared on this switch? All Off when performing maintenance on batteries, Pos-2 solar cut-off used when maintaining solar, otherwise, on Pos-1 for storage, and Pos-1+2 when running/using all. No experience with solar controllers yet, do they lose settings with momentary lapse of power?