Solar PV advice

[Richard77]

Garage doors went in and even though I haven't finished the floor yet (will be doing over the next few weeks), I got bored and put the batteries in!



Anyone good with ct clamps?

The EV CT clamp and inverter CT clamp are on the same cable. So when plugging in the EV it charges the the car from the battery rather than from the grid. Need to figure out where to move the CT clamp to. Will get the pen out and draw a diagram... (Who needs computers and fancy diagrams!?!?!)

[Richard77]

Sorry... Should have at least used a ruler



I'm thinking inverter/solar CT clamp to be put in position 1 or 2. Any ideas?

Thanks

Edit...

Position 2 didn't seem to work. Inverter stopped seeing it. And position 1 cannot fit the CT clamp on the cable as there is no space between the cables to get it on.

[Countrypaul]

I assume the Garage/Solar CU has a hybrid inverter connected to both the PV panels and also the batteries along with the Solar CT, and that the EV CT is from Your EV charger.

You have not said when the EV charging is draining the battery or what the circumstances are, but if it happening all the time you have to move your Solar CT so that the EV current is not included in the Solar CT which appears to require position 3. What purpose does the EV CT serve, is it to mop up extra PV production when the batteries are full and you are still producing solar power?

Position 3 would be on the supply to the house CU (wherre as position 2 is on the Garage/Solar CU). I previously said position 2.

[Marcus]

My 2p worth:

position 1 is essentially identical to where the ct is now, so won't be any different.

Position 2 would mean the house and ev charger are both running off the grid instead of the battery, I think.

I'm not sure CP's position 3 would work as you want, but I'm not certain that it wouldn't either.

I think you need an additional Henley at position 1, (single pole in the live would do) with the ev supply from this new Henley, then put the solar ct between the two Henleys.

[Richard77]

I assume the Garage/Solar CU has a hybrid inverter connected to both the PV panels and also the batteries along with the Solar CT, and that the EV CT is from Your EV charger.

You have not said when the EV charging is draining the battery or what the circumstances are, but if it happening all the time you have to move your Solar CT so that the EV current is not included in the Solar CT which appears to require position 3. What purpose does the EV CT serve, is it to mop up extra PV production when the batteries are full and you are still producing solar power?

Position 3 would be on the supply to the house CU (wherre as position 2 is on the Garage/Solar CU). I previously said position 2.

Yes.... the SunSynk hybrid inverter is in the garage and has batteries and PV connected to it. The electric supply from garage to house is connected by a fusebox in the garage to a fusebox by the grid in the house. The inverter/solar CT clamp has been extended from the inverter (garage) to the house.

The EV CT clamp was fitted by the guys who fitted the EV charger a couple of years ago. Unsure what it's purpose is, it was not part of the solar/battery install. Already in place.

Every time I plug the EV in to charge the car.... It uses the batteries not the grid. The batteries are powering the load of the house. So it can't distinguish the EV charger from the normal house load.

[Richard77]

My 2p worth:

position 1 is essentially identical to where the ct is now, so won't be any different.

Position 2 would mean the house and ev charger are both running off the grid instead of the battery, I think.

I'm not sure CP's position 3 would work as you want, but I'm not certain that it wouldn't either.

I think you need an additional Henley at position 1, (single pole in the live would do) with the ev supply from this new Henley, then put the solar ct between the two Henleys.

I have edited my previous post regarding position 1 and 2.

I couldn't get the CT clamp around the cable at position 1.
Position 2 the inverter didn't even read anything from CT clamp.

I can't try position 3 as the CT clamp will not reach over that far.

Thanks for the suggestions regarding additional Henley.

[Richard77]

I assume the Garage/Solar CU has a hybrid inverter connected to both the PV panels and also the batteries along with the Solar CT, and that the EV CT is from Your EV charger.

You have not said when the EV charging is draining the battery or what the circumstances are, but if it happening all the time you have to move your Solar CT so that the EV current is not included in the Solar CT which appears to require position 3. What purpose does the EV CT serve, is it to mop up extra PV production when the batteries are full and you are still producing solar power?

Position 3 would be on the supply to the house CU (wherre as position 2 is on the Garage/Solar CU). I previously said position 2.

Sorry I have edited my previous post. I got positions mixed up.
I can't get the CT clamp on position 1 and position 2 the inverter doesn't read anything from it.


Yes.... the SunSynk hybrid inverter is in the garage and has batteries and PV connected to it. The electric supply from garage to house is connected by a fusebox in the garage to a fusebox by the grid in the house. The inverter/solar CT clamp has been extended from the inverter (garage) to the house.

The EV CT clamp was fitted by the guys who fitted the EV charger a couple of years ago. Unsure what it's purpose is, it was not part of the solar/battery install. Already in place.

Every time I plug the EV in to charge the car.... It uses the batteries not the grid. The batteries are powering the load of the house. So it can't distinguish the EV charger from the normal house load.

[Richard77]

And you thought my drawn diagram was bad

[Countrypaul]

Ok, when you tried the CT clamp in position 2 did you try it both ways round? The inverter may only recognise the CT when it has a load n it rather than when it is providing power so in position 1 it would have seen the load from the house and worked to reduce that to zero, exactly the same as the position shown it currently occupying the load would include the EV. In position 2 it will only show the load / supply to the garage/solar.

You really need the CT as Marcus has highlighted on the load of the house plus garage.

[Richard77]

Just managed to get it on position 3... Between house cu and Henley block. The house load shot up to 10kw... Panicked and put it back to original position