Measuring Current
Warning
Never attempt an in-circuit current measurement where the
open-circuit potential to earth is greater than 300V. You may
damage the meter or be injured if the fuse blows during
such a measurement.
Caution
To avoid possible damage to the meter or to the equipment
under test, check the meter’s fuses before measuring
current. Use the proper terminals, function, and range for
your measurement. Never place the probes across (in
parallel with) any circuit or component when the leads are
plugged into the current terminals. Maximum measurement
time allowed at the 10A current range function is 15
seconds. If you carry on making a measurement
continuously over 15 seconds, it can cause an erroneous
measurement and damage the meter.
Danger
Do not operate the Function Rotary Switch during
measurement. Do not make a measurement when opening
the battery cover or the meter case.
Current is the flow of electrons through a conductor. To measure
current, you must open the circuit under test, then place the meter
in series with the circuit.
To measure AC or DC current, proceed as follows:
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