So I'm looking into getting a battery back-up unit to power some AC monitors on-set; which we'd charge each night. The only problem I'm coming across is I can't find a way to convert domestic based plugs (outlet I have to plug into), to a L6-20/30 (outlet of the battery back-up). I need the L6 outlets because the UPS systems with them have bigger batteries in them. I came up with a way to convert the 120v into 240v (via a transformer; http://www.voltageconverters.com/itemdesc.asp?ic=VC500W) but I can't seem to find a way to get the 240v output into a L6 outlet to plug the UPS unit into. Anybody know of anything to get from the consumer 220v outlet to a L6 outlet?