Re: (ET) Ground fault from hell

["RJ Kanary" <rjkanary nauticom net>]

   That's the beauty of tracking these down. <VBG> You have to find the 
fault on BOTH sides, positive and negative.

   Once again, here's the hard learned primer on things going to ground, in 
order of frequency.

   1.) Armature contactors.{Includes armature resistor bypass contactors.} 
Especially the melted plastic bushings on the high current connections.
     2.) Armature terminals / brush rigging in the traction motor.
       3.) Lift motor and associated wiring.
        4.) Lighting wiring compromised by armature resistors.
          5.) Harness damaged by traction motor belts and / or pulley.
----- Original Message ----- 
From: "Christopher Zach" <czach computer org>
To: "Elec-trak list" <elec-trak cosmos phy tufts edu>
Sent: Sunday, July 17, 2005 9:03 PM
Subject: (ET) Ground fault from hell