question

donnyv avatar image

Does mppt ground need to connect directly to smart shunt load

Hi,


I am connecting a MPPT 100 20 and a smart shunt. The mppt is utilized for 2 90W solar panels input.

The wiring diagram I am using shows to connect the mppt battery negative directly to the load connection of the shunt.

Can I instead connect the load side of the shunt to a ground bus bar, and connect mppt negative to that, or does the mppt need to connect to the shunt? Will this affect any readings?

Thanks

mppt smart solarsmart shunt
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1 Answer
Stefanie avatar image
Stefanie answered ·

Hi @DonnyV,

it is not uncommon to connect MPPT battery minus to a ground bus bar and have the bus bar connected to the load side of the shunt. It does not affect the reading.

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