In case you’re wondering, the AC unit in our bedroom costs $0.16/hour. The living room costs $0.50/hour.
My wife is trying to make me stop. She says it’s annoying.
In case you’re wondering, the AC unit in our bedroom costs $0.16/hour. The living room costs $0.50/hour.
My wife is trying to make me stop. She says it’s annoying.
Not a bad thing. It’s nice to know where your money is going to know if there’s places you could easily save.
Installed an Iotawatt a couple years ago to track power usage of the whole house and individual circuits.
The AC in my living room has used 3.35kwh so far today, and the main plugs circuit that has my server and a portable AC unit on it has used 5.56kwh.
This is awesome! Did you install the censors in the breaker box?
Yup: there’s a current transformer on each circuit leaving the breaker panel (up to 14 different circuits), one on each of the main feed lines, and then a small plug-in voltage transformer to measure voltage, phase angle, and frequency.
It takes all that data, polling each sensor a few dozen times a second, calculates power usage, stores, and presents it all with the above graphs in a simple little web interface. It can also export that data to more powerful graphing/data analysis solutions, but I’ve been pretty happy with what’s onboard.
You can see the live data too:
(2 phases of a 3 phase apartment supply. Outputs are math output of multiple inputs. Ex: Main_A+Main_C=Total_Power)
The setup inside the breaker panel is something you should hire an electrician for if you aren’t extremely confident and knowledgeable about what you’re looking at. There is a lot of potential to injure yourself or burn your house down, even with all the breakers off.