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Been too long. Thumb points toward magnetic pole. Direction fingersjmmckee@xxxxxxxxxxxxxx 12/15/2008 7:23:15 PM >>>
The picture looks like it is clamped on a single wire. Yes, it worksby
induction. But, if around two wires, it would not have n inducedpower
voltage. Current flow in the two wires would ech induce current, but
in the opposite
direction. Result is no current induced. Old physics refers to this
using (I
get them confused, one is motor and other is generator rule) right
(left) hand
rule. Wrap hand around a conductor. Thumb points in direction of
current flow
and fingers indicate orientation of induced magnetic field.
Think about unshielded twisted pair. Does not need shielding as the
two wires
in the pair null induced voltage.
John McKee
Quoting Roger Harman <RHarman@xxxxxxxxxx>:
Works by induction.......
http://us.fluke.com/usen/products/categoryclmp
rob@xxxxxxxxx wrote:jamesl@xxxxxxxxxxxxxxxxx 12/15/2008 2:30:04 PM >>>
Any competent electrician can put this thing that encircles the
it'scord
and does nothing to interfere with the flow.
Actually, so far as I'm aware, such a device (an AC ammeter is what
the
called) needs to go around a *single* conductor, rather than around
mailingentire power cord.
--
James H. H. Lampert
Touchtone Corporation
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