I see some have answered as to the usage of 3Kw supplies, but I wanted to also point out there is a big difference between an L5 and an L6 series plug. The 5 tells you it's a 100-120V plug, and the L6 tells you it is a 200-240V plug. So you would never want to take off a 5 or 6 series plug, and replace it with the other, unless you could reconfigure your input voltage to the device. Yes, I know some are auto-sensing, which is fine, but as a general rule of thumb.
So in the blow, you have a 30amp 240V plug, and you were talking about changing it with a 20amp 120V plug, so that would only give you half the AC power the device was expecting. Also to actually draw 4Kw from a 120V outlet, you would need to draw in the range of 35 amps, which of course would exceed the plug, and breaker, another no-no for sure. --- Howard Leadmon > -----Original Message----- > From: [email protected] [mailto:cisco-nsp- > [email protected]] On Behalf Of Bill Blackford > Sent: Tuesday, May 26, 2009 1:52 PM > To: [email protected] > Subject: [c-nsp] Cat 6509 Power supplies > > I have a question about power supplies. > > I am upgrading a 6509 chassis from SuP1/MFSC2 to a pair of SUP720-3BXL's, > fan and new power supplies. I originally spec'd a pair of 4000W units. Now > as we know, these can only support NEMA L6-30, vs. the variable power > supplies such as the 3000W. I've run out of L6-30R's in my data center as > our new rack PDU's are of this spec. I may need to use 110V NEMA 5-20 > plugs. > > Can the 3000W power supply (in redundant mode) support a fully populated > 6509 chassis (no POE) when using 110VAC? > > Thanks > > > > -- > Bill Blackford > Senior Network Engineer > Technology Systems Group > Northwest Regional ESD > > my /home away from home > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
