Replies: 2 comments 4 replies
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I could be wrong, but I think this is what I'd try... Throw out the outliers in your observations and average the percentages (looks like ~2.5%). In the CT section, where a multiplication factor of 2 is usually applied to 240v circuits, apply a factor of 1.025 to 120v circuits, and 2.050 to 240v circuits. |
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Can a multiplier be added to inputs A and B for the mains? |
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Not in the same way, and I don't know how to do it... Could probably be done with a lambda calculation; something I need to learn! Sorry I'm not more help. |
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You could update the But in general I'd say that 2.5% percent is pretty good! I use mine for automations & identifying power hogs, and for that a few percents don't make much of a difference. |
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Can the multiplier: 2 on the 16 inputs take a float value instead of an integer? I would be able to add a calibration on each individual ct clamp if this can be done. |
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Absolutely. I use ~1.7 because of my 3-phase service. |
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My utility has support for Green Button, and can output a XML or CSV with usage data in 15 minute increments, measured in watt-hours (not kilowatt). Home Assistant (by default) only shows 60 minute increments on the energy dashboard, but that's a different topic. I am getting an inconsistent variation between what the utility reports, and what the Vue collects. I have already completed voltage calibration on both phases, and the reported Vue voltage is very accurate compared to that of a multimeter.
Here is a list of total daily usage for July this year. Ignore the discrepancy on July 11 and 14, that was due to downtime of HomeAssistant and/or the Vue
And by hour energy for July 1
Other than the voltage calibration, how else can accuracy be improved for the data collection by the Vue?
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