Current Transformer Orientation

CTs must be installed with the label (“SOURCE THIS SIDE”) on the CT housing pointing toward the power source (service entrance / grid for Site CTs, solar inverter for Solar CTs). Always verify CTs are in the correct orientation by observing power flow in device setup in Tesla One.

Figure 1. CT Orientation in Relation to Power Flow
CT Usage CT Orientation
Solar CTs CT label facing toward the solar inverter
Load CTs CT label facing away from the loads