Conduit for Input and Output wires

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Thanks. You are right to wait for the 3rd Gen ESS. They have the equipment: system controller 3 & IQ battery & Combiner 5 but don't have the installation details.

I would consider using a solar AC combiner load center to combine at the garage, and feed that breaker from the IQ Combiner, then you can group all of the Enphase components next to each other at the MSP so you don’t have to extend CT’s and you resolve the comms issue. Enphase 10T batteries are very inexpensive right now from our supplier — they’re trying to clear room for the new Enphase battery, may be worth it to take advantage of pricing.

We use the AC load center to combine method often with ground mounts where the array is very far from the IQ System Controller, and just feed it with one breaker from the IQ Combiner.
 
I would consider using a solar AC combiner load center to combine at the garage, and feed that breaker from the IQ Combiner, then you can group all of the Enphase components next to each other at the MSP so you don’t have to extend CT’s and you resolve the comms issue. Enphase 10T batteries are very inexpensive right now from our supplier — they’re trying to clear room for the new Enphase battery, may be worth it to take advantage of pricing.

We use the AC load center to combine method often with ground mounts where the array is very far from the IQ System Controller, and just feed it with one breaker from the IQ Combiner.
Thank you for your suggestion and make some sense to to buy the 2nd generation battery. I live near LA like you do.

I was planning to use the 3rd Gen ESS equipment Combiner 5C and 5P Battery only (solar + Battery without backup) as I don't think it is worth to buy system controller 3G and the Load center for any backup as we don't get outage often. Also the fact is that option allow me to manage when to export power to the grid as I have missed NEM 2.0 . That also means so long as the grid is on, I can use or export the battery power from 4-9 pm when the rate is high. Will this work if I use a 3T & 10T Battery instead? Is that control trick work only in the 5P battery or with the Combiner 5C ?

I guess you said only the combiner loads (from solar) is at the garage. All the rest including the Combiner 5C and battery is near the MSP?
What I saw the cost of 5P battery is $3,850 and 3T & 10T are $2,805 and $7,498, if I buy two 5P cost $7,700. I don't see any advantage.
 
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Enphase hasn't released a control option for NEM3 yet but I can't imagine it won't work absolutely the same for the 3T/10T and the 5P. It's just the Envoy sending commands to the batteries, and any Envoy from the last few years will support either battery type. NEM3 billing won't actually go into effect until Dec at the earliest.

3T and 10T are almost 50% off those prices you quoted if you know the right distributors. (Probably I shouldn't be telling you that, I'm gonna need a bunch. 😄)
 
Enphase hasn't released a control option for NEM3 yet but I can't imagine it won't work absolutely the same for the 3T/10T and the 5P. It's just the Envoy sending commands to the batteries, and any Envoy from the last few years will support either battery type. NEM3 billing won't actually go into effect until Dec at the earliest.

3T and 10T are almost 50% off those prices you quoted if you know the right distributors. (Probably I shouldn't be telling you that, I'm gonna need a bunch. )

We just ordered a large quantity for that reason
 
Thank you all. As I need to install the consumption CTs on my Murray 200A MSP but I am not too sure it can be done or not due to the wiring configuration with space issues.
Just check whether whether it is doable and you may have done it before. My 200A main breaker is a 4-pole type. That means I need to install 4 CTs all together. I watch Enphase YOUTUBE video that I could pigtail from one branch into two parallels. Here is the picture. Can 4 CTs be installed on the 4 leads? Thanks
 

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On Siemens panels like that I have not been able to get 4 CTs around those factory wires, they are too close together. (Specifically, the wires on either side of the middle two don't leave space for the CT.) What you have to do instead is run all the loads through the CTs instead.)
 
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On Siemens panels like that I have not been able to get 4 CTs around those factory wires, they are too close together. (Specifically, the wires on either side of the middle two don't leave space for the CT.) What you have to do instead is run all the loads through the CTs instead.)
Sorry for my lack of knowledge. What do you mean or how to "run all the loads through the CTs instead?
 
Pass all the load wires through the CTs. Group them by leg and make sure they all go the same direction.
There is no (significant) difference between having the CTs on the supply side or load side of the main breaker so long as they still measure all the same energy flow.
 
Pass all the load wires through the CTs. Group them by leg and make sure they all go the same direction.
There is no (significant) difference between having the CTs on the supply side or load side of the main breaker so long as they still measure all the same energy flow.

Depending on your utility, some will allow you to install CT’s on your service wires in their section.
 
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