Solar panel set up with mppt

[gaza2015]

I've got 4 x 400w solar panels going to run 2p on two mppts 200/60 each panel vog is 85.3v amps is 5.97amps so it would be 170.6 and 11.94amps 800w÷14.5v 56amps is this right thanks

 

[12VoltInstalls]

That just slides under at 196VOC wildhat temperature adjusted voltage.

800w÷14.5v 56amps is this right

That does - but what batteries?
LiFePo4 wants < .5 “C” and with two 60A controllers that’s ~120A of charging potential. So there’s that.

 

[seneysolar]

I've got 4 x 400w solar panels going to run 2p on two mppts 200/60 each panel vog is 85.3v amps is 5.97amps so it would be 170.6 and 11.94amps 800w÷14.5v 56amps

Curious, what charge controllers are you using?

They get expensive in that 200v and up category, hate to buy 2.

 

[12VoltInstalls]

what charge controllers are you using

I was wondering myself. The 200/60 callout sounded victronish but unsure.
Victron 250/60 is ~$430
Epever 5420AN is down to $230-ish again.

I need an additional 200VDC input SCC myself. 180VDC max would do it but my little experiment with a pair of powMR 60A SCC’s eliminated trusting a cheap option unfortunately.

 

[seneysolar]

I guess id consider this 24v territory. A single Midnite Classic 200 would suffice if that was the case.

Beats buying 2 victrons just to stay 12v

 

[MichaelK]

Agreeing with SS above, why are you insisting on sticking with 12V? You did not answer this question in your other post. You appear to be as they say, "stuck in a 12V box". At 24V, you'd only need a single 60-80A controller, with your panels wired 2S2P. At 48V, only 30 something amps.

At 12V, what you are attempting is potentually dangerous, unless you've designed the wiring very carefully. And at first glance, you don't seem to be good at thoughtful design?

 

[12VoltInstalls]

did not answer this question in your other post. You appear to be as they say, "stuck in a 12V box". At 24V, you'd only need a single 60-80A controller, with your panels wired 2S2P. At 48V, only 30 something amps.

I didn’t see this other info, just this thread.
I’ll exit now …

I see no explanation why he’s doing whatever nor adequate specs to guess on stuff.