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MarkBryanMilligan / LanternPowerMonitor

The Lantern Power Monitor is a Raspberry Pi service, Java Web Service, and Android application that allow you to monitor every electrical breaker in your house, regardless of how many panels or breakers you have.
GNU General Public License v3.0
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Track 240V double breaker with one CT #1

Closed MarkBryanMilligan closed 3 years ago

MarkBryanMilligan commented 3 years ago

Right now, each pole of a double pole breaker requires its own CT. To save on the cost of current transformers, add a configuration variable so only the top breaker needs a CT and the power of the top pole is doubled in software.

JamesAndrews352 commented 3 years ago

That would save some hardware for sure. Keep in mind some 240v loads may have a neutral and 120v loads like a stove/range, but yeah, most are balanced. I have a 30 space panel with 1 tandem breaker, so I like the idea. Save me from a third meter. Love your work!!

MarkBryanMilligan commented 3 years ago

Ok, thanks for that info. That's why I decided to track both for now just to make sure it was accurate, I had a feeling some appliances might have unbalanced usage. None of mine do, but it's good to know that it's a possible use case. I think I'll make this a configuration option for the double breaker so those who need to track both poles individually will still be able to.

dcsar1 commented 3 years ago

Another vote for this one. I just ordered a couple of kits. When the canoe from China (with the sensors) finally makes landfall I hope to set this up.

MarkBryanMilligan commented 3 years ago

It's kinda lame that GitHub doesn't have a voting system for issues. What could that take to add, like an afternoon?? I always add a comment when adding an issue (and I would expect anyone else creating an issue to do the same). I think we should use a thumbs up on that first description comment to count as a vote. Then I should be able to visualize a little more easily what to do first.

MarkBryanMilligan commented 3 years ago

Ok, this one is done: Commit

I'll leave this issue open until someone else verifies that it works, but I just tried it in my house on our heat pump and it seems to be working fine. I just pushed version 1.0.7 of the app out to google play, should be available shortly.

In the panel config, you can now select "Double Pole (240V) Two CTs" or "Double Pole (240V) One CT Doubled"

MarkBryanMilligan commented 3 years ago

I saw when I close the other issue that I can reopen them if there ends up being a problem. This change has been working fine in my has for the past couple days so I'm gonna go ahead and close the issue.