3 phase energy meter installation question
Hello,
I'm considering purchasing a 3-phase energy meter, either the WEM3080T or WEM3050T, and I plan to install it according to the wiring diagram below.
Based on the diagram, I have a 3-phase system connected from the grid to the main breaker, and my solar inverter is also connected to the main breaker to supply energy to my house and return any excess energy to the grid.
My questions are:
1. Is it OK to connect CT1-3 as shown in the wiring diagram? Since the energy meter is a bi-directional meter, it should be able to monitor both the energy coming from the grid to my house and the energy being sent back to the grid by the solar inverter.
2. Should I add a breaker (the blue box) before the energy meter?
Note that I can read the energy produced by the solar inverter using my Home Assistant server and plan to integrate the energy meter into it.
Thank you in advance for your advice.
Wow, thank you for your questions and the clear description!
Yes, you can install the WEM3080T in this position. However, please note that the exported energy will not be equal to the solar inverter output. The exported energy is the inverter output minus the home load consumption.
The breaker is not necessary. If there is no breaker, you don't need to install an additional one just for the WEM3080T.
Thank you for your clarification!
Great to know that I can install the WEM3080T in this position. I understand that the exported energy will be the inverter output minus the home load consumption, which makes sense.
I appreciate your help!