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.

CT Usage	CT Orientation
Site CTs	CT label facing toward the service entrance/grid
Solar CTs	CT label facing toward the solar inverter
Load CTs	CT label facing away from the loads