Well, I wouldn’t say entirely useless but we have certainly hit a pivot point…
@Ramatt suggested a different transformer, I’m happy to use either but I wanted to check the CTR12xxxx would accomplish the same as the above suggestions?
@ramatt That is not the correct CT. That is the one for the normal Multiplus AC monitoring.
@johnyma22 is using the right device and is almost there. It just needs the right configuration.
His setup is the same as mine and he is going through the same agony that I did. The 24 hour+ calibration does help but you have to have the base configuration right to start with.
The wording of the setup in the assistants is not clear/logical. But you can see on my link that my setup works reliably.
I would just ask John to copy my setup exactly and report back 
I am off for a curry now so will go quiet until the morning.
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Sorry @teejay you might have missed my response above where I do replicate your setup
Or at last some wasted time…
Isn’t it clear from the product description or the manual or the assistant that this CT is only designed to measure the current of a PV inverter?
You might try a total shutdown and reboot.
Morning @teejay
I hope your naan was fluffy and your gulub jamun sweet.
This is how things look after a “total shutdown and reboot”.
The CT Clamp does appear to be working. Does this look right to you?
Hi John - the curry was good thank you. It was a Xmas celebration for a group of us that are doing rehab exercises after suffering a heart attack. Go figure!
That is looking a lot better, although your solar output looks quite high and why are your AC loads showing as zero? How many kWp of solar do you have? Do you have another meter that tells you the solar output from your solar inverter and does it match the Victron number?
It would appear that a soft reboot does not work for you either. It is all very strange.
Did you use Aux 1 or Aux 2?
It is a little strange that the PV Inverter output matches closely the Critical Loads number.
I tried Aux 1 on a MP2 but that didn’t give a good result for me. I can’t remember what the problem was though.
AC loads showing as zero? – I have no idea, I have nothing on AC Output 1 or 2 and only a wire connected to AC Input as per the docs.
I have 18kWp of Solar available at any time. This is from 3x Huawei 6KL units connected to 5kWh of storage (15kWh storage total).
“Do you have another meter that tells you the solar output from your solar inverter and does it match the Victron number?” – Yes I do have a meter (RS485 at tails) and no it does not match. How does the Victron unit get this number? I haven’t set anything up which would enable this so I’m confused how it gets any data… My external meter from the huawei unit is:
Victron is Consumption, Solar and PV Inverter as the same value as if the CT Clamp is reporting solar… Is it because the energy is coming from the Batteries as opposed to the grid or something? Either way it seems wrong for those 3 values to be the same.
I used Aux 1.
I think it is worth giving Aux 2 a try.
I tried Aux 1 and it didn’t work, but I can’t recall what the problem was. If you do switch you will need to change the values in the Assistant and do a hard reboot.
I presume that you have set the DIP switches with 1, 2 & 3 in the up position. The solar generation value is coming from that CT and the factthat you have installed the Assistant. The size of your solar array is bigger than the CT is designed for. When it is maxing out you might get some strange readings. My array is a mere 4 kWp.
Here are some photos of my installation:
Can you confirm each of the following:
- You have a normal CT to measure the AC load as shown in the photo in @M_Lange post above (simple blue clamp type)
- In VE Config you have taken the tick out of the box “External Current Sensor connected” on the General tab.
- You are now using Aux 2 for the PV sensor
- The wiring for the AC CT sensor is as ringed in my photo above - IE connected to Com and Ext.
- You have set the DIP switches on the PV CT.
- You have done a hard reset.
- I switched to Aux 2 and will head up to do a hard reboot now.
Answers inline
Thanks again!
Sorry about the quality of photos:
No load:
Load:
The CT Clamp is on the circuit I’m generating Load on (Fan heater).
Thanks!
I think we need to step back a little bit on understanding your configuration.
Can you give a brief description of what you actually have configured:
IE in my case:
4kWp Solar panels feeding a SMA inverter that is directly connected to Grid.
Multiplus 2 48V 5000W, charging 16kWh Seplos Battery and connected to Grid.
Multiplus 2 - only mains connection is on AC-In.
CT1 coupled around mains incomer and connected to Multiplus 2 (Ext/Com)
CT2 coupled around PV feed where it connects into Consumer Unit (Aux 2)
I am concerned that I am taking you off at a tangent, trying to get you to measure the wrong thing. If you are not trying to measure PV output then I have inadvertently been misleading you. I might need to eat a lot of humble pie.
THE CT YOU HAVE IS ONLY TO MEASURE PV POWER, IT IS NOT FOR LOADS!!!
You can’t use it the way you want to use it!!!
Read the manual of all the components you have!!!
For ESS read the ESS manual:
https://www.victronenergy.com/media/pg/Energy_Storage_System/en/index-en.html
@M_Lange That is my late realisation. He isn’t trying to achieve the configuration that I have. 
He needs a normal CT (Doesn’t have to be a Victron one) connected to current sense.
The Assistant isn’t required - that is for PV. That was the part that led me up the wrong path. But I should have stopped to get clarity. Hence the request, rather belatedly to find out what does he have and what does he want to achieve. I have learned something about myself.
@johnyma22 I am guessing that you are just trying to measure the incoming AC. If that is the case switch to a standard CT clipped around your mains incomer. Connect to Current Sense (com & Ext) as per my photo and remove the AC Current Sensor Assistant. Still leave the tick out of the External Current Sensor box on the General tab. I know it is counter intuitive but it is in-line with the manual. Reboot.
@teejay If I have to measure incoming / outgoing AC to make the inverter provide power to consumers then that is what I’ll do. I assume there is no way to set the EasySolar to always output a given Wattage irrespective of consumption?
I do have an ET112 here and some Cat6 to run the RS485 over so that should be fine. It does however look like that Victron unit requires an USB to RS485 adapter? A £50 part… Is that something I need if I want to use the ET112?
@johnyma22 As per the manual if your Inverter is in Grid Parallel mode you must have the AC CT in place. As per Appendix A (K) You remove the bridge between Int and Common and then connect up the external CT between Ext/Com. Because the link has been removed the device still considers the “External” CT as being “Internal” so no tick in the box, as previously mentioned.
I am not sure why you would want to output a given Wattage.
I am not familiar with the ET112 so I cant comment on that device. I use standard YHDC CT’s SCT013 (100A:50mA). Preferably you want a wire end but I use a jack plug adaptor. Make sure they are original not fake.
In one of your photos you appear to have a connection to AC-Out 1, which is probably why you are showing an output on Critical Loads. AC-In is bi-directional so if connected to your Consumer Unit no other connection is necessary unless you need a device to be supplied in case of Grid failure.
It’s because I have a known base load amount of power that is consumed by the property ~800W so I know if I put out the 500W from the Victron unit then that is always consumed by the base load. The rest of the load can be picked up by the Huawei units.
I have to use something that is RS485 because the property tails are ~100M away from the Victron unit.
Really good spot, this is not actually connected to any loads. I need to just remove that
Thanks again for all the insight so far, I’m not doing any installs/physical until Monday as we’re currently in the weather warning and it’s a bit mad up here.
I am still trying to work out what you have in your setup.
I believe that you have an Easysolar. Is this connected to batteries?
You also have 3 x Huaweii inverters connected to batteries. Are they also connected to Grid?
A simple sketch would be very useful.