Date: Thu, 03 Mar 2005 23:13:10 -0800

Author: "Chuck"

Subject: RE: Circuit Breaker Question


Ahhh, the rugged individualist type! Generally speaking, if the ends meet
and there is no gap between the ends to accommodate a wire, then it should
clamp around the wire entirely to get the proper reading. Alternatively, if
it is a 'brand' name you may be able to find the instructions in PDF format
on the company website.


-----Original Message-----
[] On Behalf Of cablem
Sent: Thursday, March 03, 2005 7:52 PM
Subject: Re: Circuit Breaker Question

Instructions? This is my husband's meter. Now, I know that there are men
out there that read instructions...but it ain't my hubby. He's the
stereotypical guy...the instructions were thrown away because they were
part of the packing material. In fact, it was, "Well, where are the
instructions?" question on my part that started the whole "discussion". ;-)


On 3/3/2005 10:15 PM, Chuck wrote:

>Both sides are correct, depending upon the type of clamp on probe you are
>using. The ones that you find in electronics labs usually have small areas
>to place the wire into and are generally connected to other instruments
>as voltmeters and storage oscilloscopes. The ones that your friendly
>electrician has are more likely to be clamp around types with large clamps
>and the jaws are intended to close fully to continue the magnetic path of
>the transformer. Don't worry, be happy, read the instructions for the one
>you are using.
>-----Original Message-----
>[] On Behalf Of Steve Anderson
>Sent: Thursday, March 03, 2005 9:29 AM
>Subject: Re: Circuit Breaker Question
>don't want to disturb domestic bliss, but i think you're right on this one,
>Chele. My amp clamp only reads when the clamp is closed around a wire, NOT
>when actually pinching the wire. It works by induction and the loop must be
>closed around, not touch, the current in the wire being measured.
>He may be thinking of those chirping probes that electricians touch a wire
>to see if the line is hot.
>I use a Fluke amp clamp regularly to check laser power supply actual
>draw. You pick one wire, not the whole cable.
>There is a 10x break-out cable / extension cord-probe, so you can plug in
>120 vac loads into it and then access the hot wire on a 1x or 10x loop, for
>more resolution on 1-3 amp loads.
>CSU Sonoma

Machele Cable
Lab Manager
Physics Dept.
Wake Forest University
Winston-Salem, NC 27109

Phone: 336-758-5532
Fax: 336-758-6142

"Foxtrot", 7/1/2004:
"3...2...1...Lift off!"
"I think the payload was too top heavy."
"Maybe we shouldn't try launching Barbies."

From jerryh@CLEMSON.EDU Fri Mar 4 08:53:49 2005