I had Kimber build a 20A PK10 power cord for use with my Bryston AVR20 isolation transformer. I was surprised when it arrived with a Wattgate 330i type male end. My shop inquired with them about it and we were told that the cord was good for 20A usage. As long as the connector is rated for 20A, which in my case the 330i presumably is, the orientation of the tangs is not important. It's been in the system for about three months and is working fine.
