One of our customers, Steve, contacted us about his order of 4 PS units and intending to use them to power an iCharger 4010 Duo. Steve conveniently had a 220V vac outlet (NEMA 6-20P) and wanted to split the feed into 2 legs to feed his 4 PS units, 2 units on each leg. Fortunately this discussion happened before he started on that project because he didn't realize these units can run on 220V without any modifications. They automatically detect the input voltage!
Of course running on 220V is much easier than splitting the legs, but my obsessive nature got the best of me and I started thinking about how I would set up 4 units on a 220V line to avoid a mess of wires. He was also talking about how he wanted a switched solution. So I started thinking. Hmmmmm....
Then it hit me. If it was me, I would start by looking at power distribution units (PDUs). For those that don't know, they are basically power strips for enterprise server environments. After all, these are server power supplies, right? It sounded like a sensible place to start. I have some prior experience with PDUs at my day job so I do know they can get quite expensive. But a quick search on eBay turned up this nice, cheap little package for less than $20:
HP 8-port PDU
Note that this PDU has C13 plugs, not your typical NEMA 5-15P plugs that we have in North America. If it had the 5-15P plugs (or 5-20P), it would only be rated for 110/120V. Because they use the IEC appliance plugs instead of the NEMA plugs, by code they can be rated for 100-240V. However, don't let that fool you! This little guy is only rated for a total of 12A input current! That's fine with 4 PS units at 220V but at 110V that is a bad idea. Also take note of the bonus on/off rocker switch! Sweet!
Steve also bought some short (18") C13 to C14 cables from Monoprice (you can buy them direct and they also sell on eBay). These are just about the perfect length to keep things tidy and they will connect directly to the PS on one end and the PDU on the other. The perfect match!
From there all he needed was an adapter to plug the PDU into the wall. See, the PDU also has an IEC C20 plug on the input side and he has a NEMA 6-20P wall outlet for his 220V vac. So he picked up one of these adapter cables (sorry for the poor resolution on this one):
This rounded out his switched 220V power setup for his 4010 Duo. A nice setup indeed. Here's a couple of pics to finish this up (courtesy of Steve) to get you thinking about how you want to design your 220V setup! Many thanks to Steve for providing pictures and final details of his setup to share! And don't forget to comment and/or like this post!