this post was submitted on 23 May 2025
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Energy usage clamp meters (feddit.uk)
submitted 3 weeks ago by GreatAlbatross@feddit.uk to c/homeassistant@lemmy.world
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As I'm currently doing a re-wire, it's a great opportunity for me to put some metering in the house.
I'm single-phase, but I plan to monitor multiple sections of the house, which are each wired for 100A independently.

I'm currently eyeing up either the Shelly Pro 3EM โ€“ 120A or the 50A.
As it will fit nicely in the consumer unit, and supports Ethernet.

I previously looked at the Aeotec clamp devices, but they seem to be difficult to find with multiple 100A connectors.

Emporia Vue was also a consideration, but I'm always a little hesitant to buy products that require custom firmware to even work properly, when others are available. And I'd also like to avoid using 2.4Ghz wifi for connectivity.

I'd love to hear any experiences people have had with similar devices, good or bad. And how the integration with HA went.

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[โ€“] chaospatterns@lemmy.world 1 points 3 weeks ago

I've used Brultech in a house before. It's not very user friendly to setup having to download some different firmware flashing tools and configure everything in a brittle web UI that only allows one browser tab at once. But it does have Ethernet, comes with a variety of different CT clamps. The donut style CT clamps are very compact making it easy to fit them into a electrical box. Don't use the built-in one, use the HACS integration. The different sizes make me think that the Brultech is probably more accurate than the Emporia with only a single size.

I ended up going with Emporia Vue2 for my own house given the complexity and my house layout not really permitting the Brultech's install.