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AC/DC Voltage Measurements
CAUTION: Do not measure AC/ DC voltages if a motor
on the circuit is being switched ON or OFF. Large
voltage surges may occur that can damage the meter.
Model 20250-50: AC Voltage Measurement
WARNING: Risk of Electrocution. The probe tips may
not be long enough to contact the live parts inside
some 240 V outlets for appliances because the con-
tacts are recessed deep in the outlets. As a result, the
reading may show 0 volts when the outlet actually has
voltage on it. Make sure the probe tips are touching
the metal contacts inside the outlet before assuming
that no voltage is present.
CAUTION: Do not measure AC voltages if a motor on
the circuit is being switched ON or OFF. Large voltage
surges may occur that can damage the meter.
1. Set the rotary function switch to the highest V AC
position.
2. Insert the black test lead banana plug into the negative
COM jack and insert red test lead banana plug into the
positive V jack.
3. Touch the black test probe tip to the negative side of the
circuit and touch the red test probe tip to the positive
side of the circuit.
4. Read the voltage in the display. Reset the rotary function
switch to successively lower V AC positions to obtain a
higher resolution reading. The display will indicate the
proper decimal point and value.
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