On Wed, 25 Aug 2004 08:53:15 -0700, SQLit wrote
(in article KB2Xc.103047$Lj.49961@fed1read03):


"JohnF" wrote in message
...
Hi all........what tests does one perform to determine if a short is
someplace in a cable run in the wall and not in the outlet box. There is
no
power as yet in the cable and before the walls are sheetrocked I would
like
to insure that no staples or crushing or whatever has occurred. Thanks for
the as usual good info......John


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You can test using an ohm meter. If the conductors are open between all
groups then there are no shorts. (H-G,H-N,N-G). This will require all of the
connections to be made in the outlets and switches and not in the panel.

I have used a megger to see if the insulation is ok. Really need some
experence with the machine to know what it is telling you. Would not
recommend that you megger the wiring, pay someone to do it for you.



I sometimes use a "bell box", which consists of a 12V lantern battery with
one terminal connected to a dc buzzer and leads with alligator clips
connected to the other terminal and other buzzer connection. One of the
leads is about 50' long. It's very useful for finding low-impedance
("bolted") shorts and for identifying multiple conductors in the same
conduit.