basic solar diagram

deprived wrote:

smkettner wrote:
Move the positive solar charge connection to the remote battery for balance

Got it.

The rational is explained at http://www.smartgauge.co.uk/batt_con.html if interested.

You have to read to the last line (duplicated here so you don't have to read it all :))

The chargers should always be connected to the same points as the loads. Without exception.

smkettner wrote:
Move the positive solar charge connection to the remote battery for balance

Got it.

2oldman wrote:
I means (a) won't get as much charge voltage.

I'm not sure how much difference it makes but I am using 6awg wire for that run between the battery sets. I did a little math here:
http://www.calculator.net/voltage-drop-calculator.html

And it says I'll lose maybe 2 percent along the way. Is that a lot in a system like this? Or maybe I figured it wrong.

deprived wrote:

2oldman wrote:
but the system isn't balanced

I'm not sure what that means.

Move the positive solar charge connection to the remote battery for balance.

Same with the converter/charger. Negative to one set and positive to the other. Loads also connected similar.

Otherwise the right hand set of batteries will be worked way harder than the left.

I means (a) won't get as much charge voltage.

2oldman wrote:
but the system isn't balanced

I'm not sure what that means.

You don't need to fuse the PV to the controller.

I don't ground the charger and expect that to be the - connection to the batteries. I use wire. I don't know how far the set of 6v batteries on the left (a) is from the other set (b), but the system isn't balanced. (a) won't get as much charge voltage.

Yes, that is an operational block diagram of a typical solar system. You may wish to separate the (+) phase wire from the solar charge controller and converter to the farthest left battery so that current flow is better balanced but what you have there will work.

It may help to think of the solar system as just another battery charger.

BTW, you should have some circuit protection like fuses or circuit breakers inline with the output of the batteries and between the batteries and solar controller. FWIW, I also added a manual circuit breaker between the modules and solar controller. That allows for disconnection of solar power should I need to work on wiring or the batteries.

Edit: I missed it but I guess you have two fuses in your drawing. Attaboy!