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  • in reply to: Amp measurement for 220v circuits #6273 Report Abuse
    JohnL
    Member

    Just wanted to add my voice to those wanting this bug fixed.

    I installed my system yesterday and noticed the problem immediately. Mainly because my EV also shows the incoming amps and I can compare that to the outgoing amps from the Emporia system. It does appear that kW are calculated correctly, but it looks like you are dividing by 120 instead of 240 to calculate the amps on the double breaker circuits. It is difficult to see what the true usage of power is when the circuit box is a mix of 120v and 240v circuits.

    It also appears that this same problem occurs on the incoming power, which surprised me a little, since there is a CT on each leg. When I changed the multiplier for my EV back to ‘1.0’ to see if that would give me the correct amps, my “Balance” value shot up. I assume the Balance value is a subtraction of all measured power from the incoming power. If that is the case, then it appears that you are dividing the incoming watt measurement by 120v to calculate amps, but that should really be 240v since the potential between the two incoming legs is 240v (each 120v line is 180 degrees out of phase with the other).

    Anyway, it appears that you are aware of it and hopefully get it fixed soon. Just wanted to throw my 2 cents into the discussion.

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