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Re: CAT5 surge/lightning strike protection recommendations?


From: Mark Radabaugh <mark () amplex net>
Date: Tue, 13 Sep 2005 22:31:29 -0400


David Lesher wrote:


Surge protectors can not protect you from ground differential issues.
 

True enough - but 10/100 Ethernet is normally isolated by the
transformer on the Ethernet transceiver.  AFAIK there is not a
connection between the signal lines and ground.  Isolation is 1500V for
the magnetics I checked.

Off course all bets are off when lightning strikes since the voltage
tends to be just a tad higher than 1500 volts.....

Mark Radabaugh


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