DAE P204-100-S KIT kWh Smart Submeter Polaris 2000, 3 phase, 4 wire (Wye), 100A, 120/208v, with 3 Solid Core CTs UL/CUL Listed Revenue-grade accuracy (0.5% accuracy, see datasheet in DAE Controls website for details) Current Transformers (CTs) are not direction sensitive. It does not matter if the contractors install the CTs with wrong direction of current. DAE meters can detect it and compensate it. Foolproof system. The whole LED display will be warning if the meter is improperly installed. DAEs CTs are exactly the same and exchangeable among all the meters including Polaris 1000, 1500, 2000, 2500, 3000 and SMB 350 multi-circuit, multi-function meters.