Installation on Single-Phase – various questions

[vletroye]

Hello,

I am from Brussels, Belgium, where we have Single-Phase, 230V 40A, and I am a bit confused with various comments or video presenting how to install of the Vue 2 (In French: video 1 and video 2).

1. Do I understand correctly that for my situation, as documented here, I have to use only one CT clamp 200A on the Phase line and nothing on the Neutral line ? It is what I did and it works. But in one of the video, the person has installed a clamp on the Neutral… Is this really possible and what are the advantages / disadvantages ?

 

2. If only one CT is used, do I have to configure a multiplier in the APP on the Main for my situation (Single-Phase 230V) and which value ?

And if (as per my previous question) a CT clamp 200A can be installed on the Neutral line, what would be the multiplier in that case ?

 

3. If I can and do use a CT clamp 200A on the Neutral line, do I still connect the red power cable with the blue and white ones, on the Neutral line ?

 

4. I have solar panels installed, but their are already monitored with a Solar Edge Monitoring App. Is it mandatory to install a CT clamp 50A on the Phase coming from the Inverter ?

If yes, why (are any values measures with the other clamps incorrect ? Especially from the CT 200A).

If no, what would be the advantage of doing it (as I already know my production).

 

Big thanks in advance for your help !!

[Mr. Amused]

I see this old question has no answers. I’m going to take an educated guess at them.

1. Installing a clamp on the neutral and putting that in the A, B, or C inputs will confuse VUE. It’s not desireable.
2. The VUE calculates the voltage from the wiring harness. No multiplier would be needed. Indeed there is no way to add a multiplier to the A, B or C inputs. Indeed, it’s “worse” than that in that the only way to know if multiple inputs are working properly is to trust the app OR to export the data and investigate it.
3. Single phase has ONE black wire to the hot leg, and all the rest to the neutral. It should be a 15amp or smaller breaker.
4. My interpretation of monitoring the solar inverter input is it’s nice to have it in ONE place (the emporia app). If you do NOT monitor that circuit you won’t know how much is coming in from that panel, but the mains clamp and/or the other circuits + Balance will show the net.  So for example, if you don’t monitor the solar input, you can deduce what it was by looking at the net energy from the main and subtracting out the monitored circuits plus balance.  E.g. if your net is -2 kWh (you’re sending 2 kWh to the grid), you don’t directly know if that is 100% from your panels, or some fraction of the panel data is being consumed by one or more of your circuits… you’d have to add them together and in this example the sum of them ALL would be your solar production.

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