Advice needed.

[LarryF]

Hello Everyone looking for some advice on wiring up my solar panels, to maximize efficiency. I have 3 -370 watt solars panels, a victron 150/35 SCC, 2-100 AMP Li-time batteries. I currently have them wired in series. Attached is a photo of the panel specs. Any advice would be appreciated. Thanks

 

[offgridliving456]

Looks like a good match for series connected panels. Increase the conductor size to reduce voltage drop and/or shorten the cables is about all you can do.

 

[LarryF]

Thank you

 

[sunshine_eggo]

Hello Everyone looking for some advice on wiring up my solar panels, to maximize efficiency. I have 3 -370 watt solars panels, a victron 150/35 SCC, 2-100 AMP Li-time batteries. I currently have them wired in series. Attached is a photo of the panel specs. Any advice would be appreciated. Thanks

12V or 24V system?

If 12V, 150/35 will deliver 14.4V * 35A = 504W max, so you're over-paneled by almost 100%.

If 24V, you're good.

 

[LarryF]

Thank you, I have it configured as a 12 volt system, previously had it as a 24 volt system. I’m researching the 2 systems to decide which is better for my camper, 12 or 24 volt.

 

[sunshine_eggo]

Thank you, I have it configured as a 12 volt system, previously had it as a 24 volt system. I’m researching the 2 systems to decide which is better for my camper, 12 or 24 volt.

As 12V with the 35A controller, you can never utilize more than about 50% of your installed PV, but it will output 500W for as long as your bigger array will produce 500W - probably about 4 hours per day. You are well under the over-paneling limits of 40A max PV Isc and 150Voc:



If you want to fully utilize your array, you will need additional MPPT.

 

[LarryF]

Thanks, I do have a additional Mppt charger on hand just a matter of running additional cables.