Charge controllers in series?

[yzahmad]

It's the first time he has tried this with mppt controllers, which is why I was concerned. So I guess I should has him to split the arrays going into separate controllers?

[SolarWatt]

[inetdog]

MPPT Charge Controllers in parallel off one panel array.

By the way - I think they are connected in parallel not in series.

But isn't one after the other a series connection?

I noticed that.

[SolarWatt]

By the way - I think they are connected in parallel not in series.

[inetdog]

EPSolar has a specific model, EPIDB-COM, which is designed to run two battery banks off one set of panels.

That strongly suggests that they do not think that two of their regular controllers together can do this.
Has your installer ever done this before???

[inetdog]

A long-time stroller, signed up today for my first post

Inspired by the forum members, made my first step towards solar electrification of my house today The installers had put the panels up earlier in the week, but came with the epSolar MPPT charge controllers today and finished the wiring. This is what they look like:

[ATTACH=CONFIG]2317[/ATTACH]

My concern with the above is, is it OK for the wires coming in from the panels to go straight into one, and then to the second charge controller from there? Although they are identical charge controllers, will they get equal voltage in?

Presently setup 800w of panels, we have two inverters (one for each floor) with seperate batteries hence the installer suggested to get seperate charge controllers. If this thing works, the idea is to increase the panels (hopefully double the present).

I hope this setup will work?

They will get very close to the same voltage in. That is not a problem, but....

If the two MPPT controllers are not communicating with each other, then running two CCs off one set of panels could be a problem regardless of how you run the wires. They will both be trying to maximize the power that they get as individuals, potentially at the expense of the other, and will not together find the actual MPPT of the panels.
If they had been PWM controllers, then it would not be as much of a concern.

Having two CCs run off separate panel arrays charging a common battery bank, on the other hand, is frequently done.

[yzahmad]

A long-time stroller, signed up today for my first post

Inspired by the forum members, made my first step towards solar electrification of my house today The installers had put the panels up earlier in the week, but came with the epSolar MPPT charge controllers today and finished the wiring. This is what they look like:

DSC_0129.JPG

My concern with the above is, is it OK for the wires coming in from the panels to go straight into one, and then to the second charge controller from there? Although they are identical charge controllers, will they get equal voltage in?

Presently setup 800w of panels, we have two inverters (one for each floor) with seperate batteries hence the installer suggested to get seperate charge controllers. If this thing works, the idea is to increase the panels (hopefully double the present).

I hope this setup will work?