The reason for a separate meter is how the grid provider measured ONLY HVAC kWh usage.
They give a discounted kWh cost for air conditioning if they can level out the grid, based on demand.
Prior to SMART meters, they had a radio receiver that had a relay contact, in series w/ the T-stats cool control wiring going to the compressor.
Thank you ALL for your thoughts!
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It will monitor voltage, wattage, or amps.
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