question

thechad avatar image

NEGATIVE power reading on ShorePower Line 1???

I finally got my CerboGX to see all of the components in our system: Multiplus II, 2x smart solar controllers, smart shunt.

How is it possible to have negative power on Line 1???  

FWIW, I was also seeing negative amperage numbers directly from the multiplus ii via the BT dongle... So, it's not the release candidate firmware on the CerboGX...

Any ideas?

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Multiplus-II
1631659493067.png (42.3 KiB)
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2 Answers
thechad avatar image
thechad answered ·

UPDATE!

I just did a no-shore-power inverting test and it worked great. However, after reconnecting shore power (50A), both the CerboGX AND Multiplus II (via BT) show 0W on line 1. I have an AC running on line 1, so this 0W is totally wrong.

Bad MP?

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Alexandra avatar image
Alexandra answered ·

@TheChad

Sometimes a small in-balance in wiring can do this.

Also with some LOM detection settings you can occasional feedback, since it is testing for the / testing the grid.

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