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Unread 08-02-2003, 01:08
Carl Owenby Carl Owenby is offline
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Clamp on ammeters

Most clamp-on ammeters that electricians use work only on AC circuits. Clamp-on that work on DC are much more expensive.

The most direct method is to use a current shunt that consists of a high wattage resistor (low resistance value) placed in series with the motor. Voltage measured across the resistor is then used to calculate the current.
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