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Not saying that the electric companies Electric meters are accurate or not, but has anyone positioned CT's before and after the Power companies Electric Meter and compared the results? I have a wire drop that feeds the house, so I could put the CT's above the roof where the service goes into a 2.5" conduit. The GEM is directly below the service point.


Just wondering

I have the usual CTs on my panel, and a Zigbee enabled ISY bound to ComEds meter.

I bring the data into my Elasticsearch host so I can graph it. They do pretty good..

Since I’m graphing instantaneous power usage, the exact timing of the data points matters. Where there are very short high usage points there will often be a difference in the height of the spike.

My GEM posts the left and right panel input data data directly to Elasticsearch (via Logstash) and my Zigbee ISY posts total usage data from the power meter whenever it receives a new datapoint. Kibana adds the left and right data to display it with the total from the meter. They run pretty close...

Thank you for the info.