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NW Washington | When measuring large currents it is sometimes easier to use a resistive "shunt" in the high current leg and then measure the current with a voltmeter because of the voltage drop across the shunt. Ampmeters are wired in series and the heavy current can be a problem in the meter circuit. Or go the suggested clamp on route. This link explains how the "shunt" rig works and you can google up more info. http://www.uoguelph.ca/~antoon/gadgets/shunts/shunts.html | |
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Digital amp-meter for 1ph motor?
