A correction on outlet (or technically branch circuit) limits.
In the US the nominal voltage is actually 120V (or 240V) not 110V however the NEC for fire safety derates continual loads (like a miner running 24/7) to 80% of circuit peak capacity.
So for continual loads the usable wattage by outlet type:
NEMA 5-15 120V 15A 120*15*0.8 = 1440W "normal outlet"
NEMA 5-20 120V 20A 120*20*0.8 = 1920W
NEMA 6-15 240V 15A 240*15*0.8 = 2880W
NEMA 6-20 240V 15A 240*20*0.8 = 3840W
NEMA 6-30 240V 15A 240*30*0.8 = 5760W
Yeah I have a pair of NEMA L6-30R outlets I installed myself but then again I am kinda crazy. Unless you have strong confidence in your electrical skill I would recommend having a qualified electrician do the work. It isn't rocket science but electricity can kill ... the very first time.
Still nothing like having 11.5 KW of juice for miners. The power cable on the 30A PDU (high current power strip) is about 1/2" thick. You could probably secure a boat to a dock with it.
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
The "L" just means locking connectors, same power rating but once you insert the plug you rotate it to lock it into place. This makes it a little safer when dealing with high current, no chance of creating an arc flash by tripping over the cord and ripping it out of the socket while under load.
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