Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!ames!amdahl!ems!com50!pai!pfh
From: pfh@pai.UUCP (Peter Hill)
Newsgroups: comp.dcom.lans
Subject: Ethernet electrical interference?
Keywords: near high voltage cables
Message-ID: <183@pai.UUCP>
Date: 15 Sep 88 19:21:43 GMT
Distribution: na
Organization: Prime Automation, Inc., Burnsville, MN
Lines: 21


We use Ethernet (actually 802.3) to connect PCs and Unix workstations
in factory environments.  We tell our customers to run the Ethernet
trunk cable in conduit away from high-voltage power cables or large
motors.

Now we have a requirement to wire several floors of a building.  We
have no options for running the trunk cable between floors:  it will be
in conduit, near other conduit carrying 480VAC power cables.  This will
be a long vertical run, parallel to the power cables.  We can't get
much separation, certainly less than a foot, perhaps only a few inches.

Anybody have any experience with this kind of setup?  Any suggestions?
(Even screams of "Don't do that!" would be appreciated.)

Thanks in advance.

-- 
______________________________________________________________________________
Peter Hill                          pfh@pai.mn.org             +1 612 894 0313
Prime Automation, Inc.              ...{sun!tundra,umn-cs!hall,bungia}!pai!pfh