Apologies if this has been covered before as I think it most likely has but I can't find the answer.
I have a Type 2 Solar PV system with a divert and I've connected up the sensors correctly (I believe) as I am getting correct solar generation on power1 and grid import/export on power2. However the balance calculation in the My Solar dashboard appears to be the sum of power1+power2 which is incorrect e.g. house_power = -200W, solar_power = 600W, balance = 800W. I assume there is some config option somewhere for this but I cannot find it. The solar PV page doesn't mention how to set this up as far as I can see.
What should I be doing here?
Re: Solar PV Type 2 monitoring
How do you get "house_power = -200W"? Our convention is for both solar generation and grid import to be positive, therefore your feed "house_power" should always be positive, and should be solar power + grid power if you follow our convention, or solar power - grid power if you followed Robin Emley's convention.
(If grid power is the wrong sign, flip the CT on its cable.)
Re: Solar PV Type 2 monitoring
The clip is on the cable from the meter before the consumer unit. Therefore it is minus when exporting and positive when importing from the grid which is correct. It's the house_power feed which is wrong.
I've just found the instructions here http://openenergymonitor.org/emon/modules/emonpi#solarPV2InputProcessing - I don't know how I missed that! I knew as soon as I posted the question it would become obvious.
It is working now but I had to add the calculation to the power1 feed as the power1+power2 automatic feed is only on the emonPi and not the emonTX. I'm not sure if I needed to set that up.