> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mark Hahn > Sent: Thursday, September 18, 2008 11:22 AM > To: Gus Correa > Cc: Beowulf > Subject: Re: [Beowulf] Re: MS Cray > > > Note that for the fully populated enclosure the power > supplies are dual, i.e. > > 2* 1600W = 3200W. > > I see that now. question for electrical-code enthusiasts on the list: > isn't a normal "15 amp" office circuit actually supposed to > only be used up to 12 amps? that would mean 12*120=1440; in > other words, each 1600W PS needs a special circuit. also, > isn't it pretty common for an office duplex receptacle to be > fed by a single (15A) circuit?
Don't confuse a 15A receptacle with a 15A circuit. You can have multiple 15A receptacles on a 20A circuit. A 20 A receptacle is also not uncommon (the one with the T shaped slot).. The 20A plug has one pin/blade at 90 degrees relative to the other. 20A circuits are pretty common. And, in a lot of offices, multiple circuits wind up in each office (modular wiring systems, for instance, will carry all three phases of a 208/120Y system), so with two power cords you could do the 3kW. And, hey, if you're spending 90K on the box,you can spend 1K on the electrician to install a 30A circuit. Jim _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
