On Thu, 05 May 2011 10:02:55 -0700, Stephen Trapani
wrote:

I think Larry once explained why the amps get cut in half, but I forgot.
I have an amp meter installed in line between the alternator and the
battery switch. Last weekend I had a borrowed Fluke clamp meter. When I
put the clamp on the line coming out of the alternator it read exactly
half of what the in line amp meter was reading. Why is that?


Sounds to me like an inaccuracy in one of the meters. Do I
understand correctly that you are clamping the Fluke around the one
and only wire delivering power from the alternator? Do you have the
Fluke switched to DC amps, and on the correct scale?