Good Evening!

I have this Magneto Inverter, i wanna use it offgrid only(No AC In) for lights and tv. I would like to find out what sizes of solar panels should i buy that will be compatible for the system. And what sizes of fuses,breakers do i need as i am buying the stuff bits by bits. I'll be charging the battery only by solar, not by grid/municipal power.

Thank you

The nameplate doesn't state the maximum current the MPPT can handle. Looks like you can do 500W panels in a 3p2s configuration.

15A fuses on each of the parallel strings will allow for isolation.

4 hours ago, Ndlovu said:

. I would like to find out what sizes of solar panels should i buy that will be compatible for the system.

I would buy the Trina Vertex 545w solar panels and configure the array as 3S2P that would give you Voc of 113.1V and Imp of 34.74A max power of 3270w.

7 hours ago, TaliaB said:

Imp of 34.74A max

20A fuses on those two strings... But they will never blow.

58 minutes ago, frivan said:

20A fuses on those two strings... But they will never blow.

I did not specify any fuse rating in my reply to the op but since you are on the subject of fuse ratings within a solar array or fusing per string. Fuses in all combiners are rated above the ISC rating of a string it is there to protect the cable should something weird happen. Combiners are designed for ease of connecting multiple strings to either connect them as 1 or 2 series strings to the scc or to parallel multiple string before it enters the scc. As for 3P connection as you suggested there need to be series fusing on each panel as the combined current could exceed the current rating of the solar panel in the event of backfeed on a faulty solar cell or panel. In essence in series strings the fuses are not actually necessary as long as there is an solar isolator to isolate the solar array from the scc for maintenance or emergency.

Edited July 20, 20251 yr by TaliaB
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15 hours ago, TaliaB said:

I would buy the Trina Vertex 545w solar panels and configure the array as 3S2P that would give you Voc of 113.1V and Imp of 34.74A max power of 3270w.

Thanks TaliaB! How many Panels must i buy?

3 hours ago, Ndlovu said:

Thanks TaliaB! How many Panels must i buy?

6 panels, connected 3S2P -3 panels in series string 1 another 3 panels in series string 2 then parallel strings 1 and 2 in the combiner box and the output of the combined strings to the scc.

Edited July 20, 20251 yr by TaliaB

18 hours ago, TaliaB said:

I would buy the Trina Vertex 545w solar panels and configure the array as 3S2P that would give you Voc of 113.1V and Imp of 34.74A max power of 3270w.

This is a great panel for the low voltage Axpert type inverter (Voc below 145V) where 3 can be used in series and not just 2.

Thanks for mentioning them @TaliaB

@TaliaB any good sources for those panels, they seem expensive, would also work well on a Victron MPPT 150v/45.

Energytechstore.co.za

Their price do not seem to be expensive as mentioned.