The new modular eMOB I-80.3 AC 3-phase measurement adapter for current and voltage with exchangeable connection adapters, like Type 1 (J1772) or NACS, connected to one of our Portable Working Standards such as the PWS 2.3 genX, the PWS 3.3 genX or the CheckMeter 2.3 genX, is the right tool to perform a calibration of any 1- or 3-phase EVSE for slow charging AC, up to 80 A, 300 V in accuracy class 0.1.