On 02/01/2013 21:52, Rick Hughes wrote:

I don't have such a clamp meter, and impractical to buy one for just one
set of measurement.

A Hall-effect sensor such as
http://www.panucatt.com/Current_Sens..._p/cs-100a.htm
is quite a neat solution for high-current measurement - but it does need
a supply voltage and some interface circuitry.

--
Andy