Home Assistant and Solax AC Inverter

Oscarmax

I have 4.4 kWh solar array and Solis inverter, I have Solax AC inverter and triple 5.8 kWh battery, I would like to change from the standard Octopus Go to Inteligent, unfortunately despite requesting the Solax battery is not blinded from the new OHME Pro EV charger.

I am considering a Home Assistant Green which apparently will configure my Solax AC inverter, unfortunately I am a total numpty.

QrizB

… unfortunately despite requesting the Solax battery is not blinded from the new OHME Pro EV charger.

So the Solax discharges its battery when the Ohme is charging your car?

That can probably be fixed by repositioning the Solax CT clamp to be after (house load side) of the Ohme charger.

Can you share a photo of your mains tails from meter to consumer unit and Ohme?

Edit to add: see this previous post of mine for one way to do it. There are also other suggestions in that thread.

Oscarmax

The Ohme Pro EV charger CT clamp is upstream of the Solax clamp, unfortunately the installer is not particularly competent.

For some reason I cannot upload photo to this particular site.

Oscarmax

My Ev charger is connected up in the external meter box both CT clamps are on the same positive wire.

QrizB

... both CT clamps are on the same positive wire.

The Solax clamp need to be located after where the feed to the Ohme is split off.

The photo - if you can persuade the forum to share it - should let us tell whether it's simple to move the clamp, or not.

Oscarmax

Just taken a photo still cannot upload.

I was wrong about the CT clamps, the OHME Pro charger is wired of the external meter via henley blocks the OHME CT just before the Henry block.

The Solax batteries wired from a main switch in the external meter cupboard CtT then Henlry blocks

QrizB

Ok, so if there is a Henley block where the Ohme Pro feed splits from the house feed, the Solax CT needs to be after that Henley block (on the "house load" side) and not before it.

QrizB

(The reason I'm hoping we can do this without Home Assistant is that all the HA users I know seem to spend a couple of days (or more) a month tweaking, updating and fixing things that don't quite work right. The cure might be worse than the disease.)

Oscarmax

OHME does not seem to happy with the installer and are reviewing the installation.

Oscarmax

I have sent phots of the installation to OHME they have confirmed the CT clamps are in the right place, I am not so sure, it looks like no Octopus Intelligent Go