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112v and 137v panel strings combined to one MPPT?

Thorium

New Member
Joined
Apr 8, 2021
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I want to add some panels and trying to determine if I can add some different panels and they’ll still play nice if combined (paralleled) with existing setup.

Current strings are VOC 112.8, max power current is 8.27 amps.

New strings would be VOC 137.6, max power current 7.24 amps.

4 of the existing 112.8 V strings go into a combiner box.
All combined and one set of wires back to a Victron 150/60 MPPT.
I’d like to add 2 of the new 137.6 V strings into the same combiner box.
All 6 strings would be combined and go back to the MPPT paralleled.
Will this work with the 24.8 VOC difference between strings?
 
As I recall it'll try to bring the higher string down to the lower one, but I'm sure someone who can be more specific will come along soon.
I want to add some panels and trying to determine if I can add some different panels and they’ll still play nice if combined (paralleled) with existing setup.

Current strings are VOC 112.8, max power current is 8.27 amps.

New strings would be VOC 137.6, max power current 7.24 amps.

4 of the existing 112.8 V strings go into a combiner box.
All combined and one set of wires back to a Victron 150/60 MPPT.
I’d like to add 2 of the new 137.6 V strings into the same combiner box.
All 6 strings would be combined and go back to the MPPT paralleled.
Will this work with the 24.8 VOC difference between strings?
 
The video below covers this topic. There are a couple more related videos by the same folks that you may be interested in. Amy (SolarQueen) was a forum member for quite a while and was a great resource. She recently passed away.

 
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