MultiPlus-II 10000/140 - output capability and M6 wire gauge

Q&A and troubleshooting
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1

We’re having a MultiPlus-II 10000/140 installed tomorrow with batteries. There is some clarification needed on the installers side..

  1. They claims the output is 50A max on AC-Out-1 / 2 as it’s shared. I cannot see anything in the documentation that specifically says AC-Out-1 can supply 100A, it can only be inferred from other parts. Can this be confirmed?

  2. Installer also claims maximum AC output cable size is only 10mm (assume mm2), which is far too low and would need limits applied and negates the benefits of this 10kva unit. Are there any physical or regulatory limits on the AC-Out-1 M6 cable size? I can purchase M6 to 25mm2 crimps online…

From my understanding this unit can:

  • Pass through 100A from the grid to AC-Out-1
  • “Combine” the output of the inverter and grid (upto 100A on AC-Out-1)
  • Output 8000w continuously from the inverter, or 18kva for a short period

Any clarifications greatly appreciated!

2

You are right in all three cases. In general, there is no strict upper limit on the cable cross-section; if your installation requires connecting 25 mm² conductors to the AC-IN 1 and AC OUT 1 terminals, you can do so. The wiring should comply with local regulations and meet all local requirements.