New IoTaWatt user - fantastic product, fantastic sales/delivery process, easy setup, quick to get working.
I have two panels A and B. A is the main panel to the house, 200 AMP service. Panel B is a 150 AMP service (that’s what the electrician had handy) for a commercial bakery in our house. One stove (50 A circuit), the rest are lights, outlets, refigerator/freezer, and a furnace. Never set up to go fully to 150A load. Feed is tee-ed off of the main energy lines at the meter outside, OK with the electric company and code (signed off).
I connected two ECS16-100 current transformers on the main in. I connected a ECS10-50 on the furnace hot line.
The total watts (measured as a sum of the two 100A CTs sometimes show LOWER than the watts measured for the furnace line alone in that panel.
What basic fundamental concept am I missing or have I hooked things up wrong or am expecting something impossible or did I get the WRONG CTs for this panel?
Here is my current status page:
Here is a graph:
The light blue line is the furnace feed.
Notice where the light blue Furnace watts are greater than the total panel wattage
Or is this a matter of letting the IoTaWatt ‘settle in’ for a few days.
Here is what the test hookup looks like:
