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Seplos Mason 280 Wiring Configuration for 300A Charging

danmc

Solar Enthusiast
Joined
Jun 27, 2022
Messages
208
I'm adding a third Seplos Mason 280 to my system to enable me to charge with 300A. I'm trying to wrap my head around the best way to connect them in parallel. Would the configuration below allow me to charge with 300A or would it overwork the middle battery or pull too many amps through the Futronic connectors which are only rated for 250A each?

Drawing-2.sketchpad.jpeg

I know the obvious solution would be to connect all three to the same busbar, but It's a couple of metres run to my Lynx distributor, and I already have enough cables/connectors to do the above.

* Fuses/disconnects have been removed for clarity.

Thanks.
 
Last edited:
each battery should have equal length to distributer
Thanks for the reply. Yes, that was my original plan, but I ran into a problem, so I'm clutching at straws. I was planning to modify a Pylontech terminal box, add Futronic connectors, connect all three batteries to that and then run a 95mm cable to my Lynx Distributor, but after opening it up I found the bus bar wasn't up to handling 300A. It's only 3mm thick and 10mm wide.

IMG_9453.jpg

IMG_9454.jpg
 

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