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How to monitor 240v ac (US) power use? (lemmy.world)
submitted 1 week ago by to c/homeassistant@lemmy.world
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Can anyone point to resources, reviews or experiences on monitoring power usage in 240v ac (US)?

Looking at the new energy dashboard features …. I have opower integration of my electricity usage and a nice graph. However most of my power usage is from a heat pump, and EV charger, and maybe a garage heater. All are 240v, larger current loads. So the new feature is something about graphing device usage with overall usage. So that would be cool to add

I started searching online and it doesn’t seem especially positive. I see a few clamp meters with integrations but also see reviews that they’re not very accurate.

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[–] 3 points 1 week ago

Shelly pro EM50 breaker box monitor, or similar monitor system. Sometimes cheap, sometimes a few hundred USD. They're are many other similar models. Can be even installed before the breaker box to monitor the entire home to check for independent electric usage against your power company bill.

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