Re: slightly off topic

One message you're saying you have 220v mains (implying single phase 
utility service with a center tapped transformer giving you 110/220). 
This message you say you normally have 208v, which would imply 3-phase 
utility service, which is 3 legs of 120v, any two of them being 208v 
together since they are out of phase.

I would suggest having an electrician check things out. Sounds very 
disruptive and possibly dangerous/damaging if it continues to happen.

On Sun, Mar 02, 2008 at 08:16:15AM -0700, Blake Pfankuch wrote:
> That's exactly what happened but not in the way we would have expected.
> We went to the main to that room, popped it open and got the handy multi
> meter.  Hot side tested at 208.  Other side at 104.  We figured we had
> lost 1 fuse.  So we swapped out one of the fuses.  Multi meter showed
> 160 ish.  The fuse we just pulled out, check the resistance on it and it
> was fine.  Removed the other fuse on the main and put the one we just
> pulled out in, and it was 208 like it should be.  Now the weirdest part,
> the last fuse we pulled out tested good as well.  Anyone ever run into
> something like this?
> 
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of joe mcguckin
> Sent: Sunday, March 02, 2008 2:47 AM
> To: [email protected]
> Subject: Re: slightly off topic
> 
> It sounds like you lost one phase of your  power.  low voltage phase  
> to neutral loads (for devices
> connected to the still live phase) would be unaffected, but higher  
> voltage phase-to-phase devices would stop working.
> 
> Joe McGuckin
> ViaNet Communications
> 
> [email protected]
> 650-207-0372 cell
> 650-213-1302 office
> 650-969-2124 fax
> 
> 
> 
> On Mar 1, 2008, at 8:55 PM, Blake Pfankuch wrote:
> 
> > So we ran into an issue the other night that was power related, long
> > story short the mains to the datacenter had the wrong fuses.  Anyone
> > ever run into Slow Blow Voltage limiting fuses?  When they actually
> > trigger, the limit voltage passing through them to 50% until you reset
> > them by removing them and putting them back in.  These were 100A fuses
> > on a 220 main.  The way the room was wired, it allowed some stuff to
> > still function as it was 110, but the rest of the 220 stuff died out.
> > Can anyone think of a practical reason to put these on dedicated mains
> > to a small datacenter?
> >
> > Thanks
> >
> > Blake Pfankuch
> > _______________________________________________
> > "Eat sushi frequently". - Avi
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> 
> _______________________________________________
> "Eat sushi frequently". - Avi
> [email protected] is the human contact address.
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> _______________________________________________
> "Eat sushi frequently". - Avi
> [email protected] is the human contact address.
> [email protected] is the list posting address.
> See below URL for subscribe/unsubscribe and list options:
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