Drafting a VanLife system - thoughts on this system? Specific questions under the diagram

[clammchops]

Assuming panels are 100W 22VOC and 5.3A?

Probably risky in series 4S (88V) at low temps but fine at 2S2P (44VOC)

3 in series at 66V is fine

Gotcha - our panels are: 200W, 18.6V Vmp, 10.75A Imp, 21.8V Voc, 11.47A Isc

 

[clammchops]

Yes it will work for four in a 2s2p setup. It does have a max of 700watts @12v (everything above that will just be clipped). But the big advantage is all the additional watts when not in ideal conditions. I only noticed the clipping once on my rig (four flat -mounted 200w panels).

Good to know. To maximize our 800W (if we got 4), we'd probably want to upgrade the MPPT so it's not clipped

 

[12VoltInstalls]

Good to know. To maximize our 800W (if we got 4), we'd probably want to upgrade the MPPT so it's not clipped

It may not matter. Flat mounted panels will attenuate max production a bit. So it could be just right with 800W

 

[clammchops]

It may not matter. Flat mounted panels will attenuate max production a bit. So it could be just right with 800W

I have one more question. What is the difference between isolated vs. non-isolated DC-DC converters?

 

[Rocketman]

My understanding…

Non-isolated are for MotorHome’s and vans. Where both batteries negative wire are connected to the same frame.

Isolated are for trucks and trailers - where there is not a solid negative connection or other areas where the systems are separate.

 

[clammchops]

Okay that makes sense. I think this would be the option I'd want then: https://smile.amazon.com/Victron-En...dc-dc+charter+non-isolate,aps,119&sr=8-3&th=1