Answer:

The discrepancy in measurements between the EnergyHub and the utility company can be due to different measurement methods and the slight measurement error of Ferroamp's current transformers, which is within a few percent.

If real-time measurements show significant differences, refer to the troubleshooting guide below.

1. Check the placement of current transformers; it is crucial that they are positioned after the main fuse before any other consumption in the property. Verify that the CT ratio is correct for the current transformers installed and finally, perform a CT configuration.
2. If the meter readings still seem incorrect, use a current clamp meter on each phase to ensure that your assumption is correct. If it is, go through and check the connection of current transformers and any joints. Measure and verify that the resistance in the CT cables is approximately the same. If you have Rogowski-type current transformers, ensure that everything is done according to the specific Rogowski manual, which you can find on our download page.

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If you need to get in contact with Ferroamp's Technical Support or if you have any questions about the system, you can do so by creating a ticket here.