question

garagenpv avatar image
garagenpv asked

Can MPPT 100/20 negative Input and output be connected via a common Grounding

I plan to establish an environment with several MPPTs connected to a battery system. The battery system negative pole is grounded to earth. I want to ground also the negative pole of the strings. with the surge protection. That will connect input - terminal with output - terminal of the BlueSolar MPPT 100/20. Is that allowed with them ? Thread 106508 states that it is ok with 100/50. 1677354030469.png

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1 Answer
michaeld avatar image
michaeld answered ·

No - see https://community.victronenergy.com/questions/6674/grounding-mppt-10050.html

You can ground the panel frames assuming they're not connected to the panel negative, and ground the MPPTs with the chassis screw.

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