Unused port giving substantial readings

[catatung]

Hello, I've got this all set up and working correctly it seems to me, however I am only using ports 1-15. 15 is a double pole 30A breaker and so I am using the multiplier:2 on the configuration. Port 16 is left unused and not connected to a CT sensor. I've put the rubber plug inside the jack.

What I am seeing are readings jumping around between 70w-120w. I don't understand why, however since I am not using this port it's not of much concern to me -- Should I plug in a CT sensor to try and zero this out, or should I disable this entity? Or is it irrelevant what I do here, as total consumption is calculated based on the two main CT sensors on phase a/phase b?

Thanks for any suggestions
Randy

[flaviut]

Closing in order to consolidate this question all in one thread: #103

Please let me know if that doesn't help!