"Calif Bill" wrote in message
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wrote in message
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On Mon, 10 Dec 2007 13:08:25 -0800, "Calif Bill"
wrote:

Where were you running that cable that required conduit? That almost
sounds like a Chicago thing. In Florida (and Md) you can run low
voltage cable in a plenum Tbar ceiling if it is plenum rated. You
just
need to support it above the ceiling tile. That is a National
Electric
Code requirement. Usually it just got thrown up there tho.

The Independent Republic of San Francisco.


Let me guess, has to be installed by a union electrician too?

It was so bad in Chicago that CEs couldn't run interface cables under
the floor in the computer room. I was in the education center and I
pulled a floor tile to move a machine over a square and the management
had a cow right there. They said if anyone saw me there would be
pickets in front of the building or something. They were all in a
chase anyway.
They also require EMT for all residential wiring there, no Romex.

SF is a huge union town. But we could at least run our own cables.
Worst computer disaster I witnessed was moving a system from one room
to another. The original room had a missed wired plug for 110V 30 amp
for a card read punch. The original FE had rewired the plug on the
reader to conform to the bad plug without telling anybody or leaving a
note. Moving the system to the other room, I checked the receptacles
as to normal operations and found it correct. Left 110v on the frame
of the reader. Luckily was far enough from the wall and any grounds to
keep from killing anybody. Worked fine offline and after we turned off
all the power and hooked up all the logic cables to the CPU and reader
and when we turned on the power to both units, CPU 208 3 phase 208V.
It looked like a scene from Voyage to the Bottom of the Sea. Sparks
and flaming parts of PC boards flying out the open doors of the CPU and
card reader. About $150k damage in 5 seconds. CPU never ran again.
NCR ate the cost. Another install the Electrician (union) ate the
cost. HE swapped one of the hot leads and neutral in one of the
junction boxes before it got to the CPU receptacle.
I wonder if that was the case that led to the requirement that cable
connector shells be insulated. We always heard that a CE died. POK
didn't abide by the requirement, only ABS/GSD/SPD/....

wrote in message
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On Mon, 10 Dec 2007 16:35:14 -0800, "Calif Bill"
wrote:

The original room had a missed wired plug for 110V 30 amp for a card
read
punch.
That's unusual. IBM never had any 110v equipment in the computer room.
We didn't even bring a neutral to the distribution panels. Even the
smallest stuff was 240 or 208v. Later they did start putting in 120v
plugs for terminals but a lot of places just plugged them into the
convenience outlets in the frames. (transformer fed)

Some parts of IBM made stuff that didn't live in computer rooms.