Thanks for that explanation David.

I could've used that setup for testing Amp draw of my 2nd aux battery.
(when partially depleted.)

Neil.

On 1/8/14, David Beierl <dbeierl@attglobal.net> wrote:

> At 12:41 PM 1/8/2014, Neil N wrote:
>>The image showing this device used to measure 'hundreds of Amps' seems
>>to show wires that are too small?? Anyhow....
>
> Not at all.  It's using an existing power-carrying wire as a current
> shunt ("...use the burden voltages already introduced...).  The meter
> is looking at some number of millivolts.  Of course when you're using
> an uncalibrated shunt you get uncalibrated results, but it's still
> very useful.

......
--
Neil n

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