[j-nsp] EX-4200 mixed DC/AC power supply

[Chuck Anderson]

On Wed, Dec 21, 2011 at 01:04:37PM +0800, Mark Tinka wrote:
> On Wednesday, December 21, 2011 07:45:40 AM Jim Glen wrote:
> 
> > I've done this on both the EX-4200...
> 
> I'm curious what the switch would do, in this case, if you 
> wanted to drive some IP phone or wi-fi AP's via PoE, as DC 
> power supplies don't normally allow the switch to drive 
> power to anything via 802.3af.
> 
> Since the switch has both an AC and DC power supply, what 
> would it do :-)?
> 
> > and the MX480 systems,
> > it's not recommended by Juniper but it works, I've also
> > mixed 110v and 208v with no problems. JimG
> 
> That's when you, accidentally, plug the 208VAC source into 
> the 110VAC power supply :-).
> 
> Document, document, document. DON'T USE or DON'T CONNECT 
> stickers all over the place, e.t.c. :-).

All the EX4200 930W AC and MX240/480/960 power supplies I have seem
are designed to work at 120V, 208V, or 240V with a 90V-250V or similar
rating.