[j-nsp] MX960 Power Options

[sthaug at nethelp.no]

> > I recommend 4 x 208V.  The MX960 uses "power zones" in a 2+2
> > arrangement where half of the chassis is powered by 2 PEMs, and the
> > other half of the chassis is powered by the other 2 PEMs.  Make sure
> > the 1st PEM for each zone is powered by the A feed, and the 2nd PEM
> > for each zone is powered by the B feed.  For dual-input PEMs, you
> > should put both inputs of a single PEM on the same branch circuit,
> > either A or B.
> 
> Hi Chuck,
> 
> why would one want to put both inputs on the same circuit? That kind
> of defeats the purpose in my mind. Are there caveats?

He's talking about dual-input PEMs. 4 PEMs, 8 inputs. In this case it
makes sense to both inputs of a single PEM on the same branch circuit
(this is explicitly what Juniper recommends).

Steinar Haug, Nethelp consulting, sthaug at nethelp.no