[athertonzd]

Hi Yk,

Only one question first – I am connected to my house with a typical residential setup. Transformer on my pole bringing in 220v split phase with a panel having 2 110v legs. Are you using the 240v as a generic voltage or talking about a more industrial/commercial setup?

My findings are from reading the manual and changing/configuring setups in my house with varying loads and here is what I have found – but first to restate my findings:

The “Balance” number at the bottom of the app is not the difference in the two legs of the panels, but is instead the mathematical difference of the total power coming into the panel from the 2 200A CTs minus the sum of all of the 50A circuit CTs, and I can prove this.

First off, I am running 12 50A cts so far, and have a 200A CT on both of my panel main conductors. The only circuits I don’t have monitored in my house right now are very minor/things that are currently turned off with the exception of a few home automation switches, air circulating fan, and some phone chargers. My current balance number is 39 Watts. Now, when I go downstairs and turn on my shop lights which are 260 watts on a single 110v plug, my metered circuit number “basement lights” goes up 260 watts, my home number goes up 260 watts, but my Balance number does not change a single watt. Now, since this is all on a single leg, if the balance was the difference between my two legs the balance number in this case would also immediately change by 260 watts.

Why did I look into this so much (and run a NUMBER of other checks and configurations) – Keep in mind my Balance number is very low. I originally hooked up a single CT to my electric dryer and applied a multiplying factor of 2 to account for the other leg as per the manual. When the dryer began to run, my balance number began to toggle between negative 40 and positive 160 as the dryer went through it’s cycle. I swapped the dryer CT to the other leg and my Balance number behaved in the opposite manner (mind you, my ACTUAL panel and real world loads and balance had not changed, only how I measured them). So, I clamped a 50A ct on both legs, and labeled them Dryer Leg 1 and Dryer Leg 2. I could see in the numbers the difference of the 200 watt tumbler motor which is only connected to one leg, causing one of my dryer readings to be 2700 watts and the other to be 2500. Now, since the app did not assume a calculation, my balance number no longer changed even though I had a clearly imbalanced load.

My panel cover is still off and I am more than happy to run different configurations for testing or show screenshots, but I am EXTREMELY confident in my findings.

I have also found another post requesting that the app can sum two CTs for this very reason, specifically regarding electric dryers and Emporia says they are coming out with that update for the app.

[athertonzd]

I have confirmed, balance is simply the remaining power not monitored by individual CTs. It is total power (two 200 main CTs) minus each of the 50A cts. I looked into this a lot when I realized I was using the 2x multiplier on my electric dryer before I learned that the motor is on a single leg. The App did the math but my balance number was off by 200 watts because of the imbalance.

[athertonzd]

YK – Are you sure about that definition of the balance? I have found it to be the “balance” remaining of non-monitored circuits. I am VERY new (just hooked mine up today) but found quickly I had issued using the multiplier for 240v circuits. The balance being green, showing you have a negative non-metered, to me seems to indicate your 240v circuits are not balanced (Sub panels are prime suspects) and you would be better using an individual CT on each leg

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