Ah once again to be consistently inconsistent, some of the RBOC
customers insist that no outlet be provided in the rack. If it isn't there it
makes for an interesting installation to get AC into the center of an equipment
lineup. I don't have a huge amount of time in CO's but the only time I saw an
AC driven piece of equipment, it was sitting off by itself, was the only piece
of equipment in the rack, and was slightly raised off the bottom of the rack.
The AC wiring was routed under the equipment and away. I don't know where it
went or why it was routed that way, but my first guess was simply to keep it
isolated from the DC wiring to avoid 60 Hz hum. In the case of power fail, I
haven't any idea of how it was backed up. I didn't see any local means to do
so, and certainly the battery backup scheme for the DC equipment wasn't going
to be able to do that.
It's interesting that this piece of equipment was a CISCO router - they
certainly have DC variants so I've always wondered why the ILEC installed it.
Gary
-----Original Message-----
From: David Heald [mailto:[email protected]]
Sent: Tuesday, September 10, 2002 7:07 PM
To: 'Cortland Richmond '; '[email protected] '; 'ieee pstc list '
Subject: RE: Adding A/C Power to DC Telecom Gear
But they do ask for an AC convenience outlet location in the bottom of every
rack (granted I've never actually seen a CO installation so I don't know if
they actually install the AC convenience outlets).
Dave
-----Original Message-----
From: Cortland Richmond
To: [email protected]; ieee pstc list
Sent: 9/10/02 6:49 PM
Subject: Re: Adding A/C Power to DC Telecom Gear
Chris,
You SURE you want to do this? I believe CO's strictly isolate AC powered
gear. They have this "thing" about AC hum, you know...
Cortland
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