Expanding...again. Your thoughts please.

bbbuddy

Okay found a deal on new panels too good to resist.

We will be adding a classic lite to go with our classic 150.

Our existing panels are 10 100 Watt mono 75 volt wired in parallel and six 200 watt poly 26.2 volt wired in series and parallel. These two solar banks each have their own combiner box and breakers and then join before the classic 150.

The new panels will be six 275 W panels 35.5 volt wired in series and parallel.

So we have 1000 W at 75 V , 1200 W at 78.6 volts, and 1100 Watts at 71 V.

I don't want to have the 71 V and 78.6 V panels combined because of the voltage difference, so I was thinking about wiring 500 Watts of the 75 volt panels into the same combiner box as the 1200 watt 78.6 v panels, and the other 500 W of 75 volt panels added to the 1100 W 71 volt panels in the other combiner box.

This way the panels in each combiner box will be well under 10 percent off in voltage. Each combiner box will then go a separate controller.

Do you see this as the best way to combine these disparate panels? Or am I missing a better way?

Thanks much.

Cariboocoot

Re: Expanding...again. Your thoughts please.

It should work with fairly minimal loss of power.