diy solar

diy solar

Is there a 3 way switch for MC4 connectors?

Thanks!
This would be for 40v and 14 A, just 2 panels in parallel.
so not high
any size recommendations?
I’m doing something similar and I decided to use two battery selectors designed for high current at modest voltage: https://www.amazon.com/gp/aw/d/B08C78311X?psc=1&ref=ppx_pop_mob_b_asin_image

These are rated for 200A continuous at a maximum of 48VDC.

I use one for + and the second for - and only switch after opening the breakers. 2S string wired to Output, SCC wired to Battery 1, inverter wired to Battery 2.

Yes, there is a modicum of ‘risk’ needing to assure both switches are set to ‘1’ or ‘2’ but I’m comfortable with that, especially since the downside is nothing working (+ to SCC w/o - and - to inverter w/o + or vice-versa). I also only switch at night or after opening the PV breakers (so no possibility of any arcing).

My 2P maximum current is ~23A @ 40VDC…
 
Back
Top