I have a customer that has a Hearing Test trailer that has two Locations with Appleton ADR6044 Pin and Sleeve Male Inlet on each end of Trailer , with a tranfer switch for using either one to power up trailer. The rating of the Inlets are 60A 600V 4 Wire. The system on trailer is 120/240V Single phase. I am looking for the female Connector for the SO cord which I think is Appleton ACR6044. Would it be code compliant and safe to use this set up. Or should it require 250V devices