The hefty step-down transformer is delivered to the NW Handling Systems warehouse. It's a 30kVa unit needed to convert 480V - 3 phase down to 240V - 3 phase. To get enough power to charge four Teslas, we needed to use two of the shop's 30 amp L-16 30 type twist lock wall sockets to get 60 amps input power. Each are protected by circuit breakers at the wall panel. NEDRA president Mike Wilmon wastes no time taking it apart!