14
AC CURRENT MEASUREMENTS
WARNING: To avoid electric shock, do not attempt to
measure AC A in circuits that have voltages which exceed
250V AC.
CAUTION: Do not make current measurements on the 20A
scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative (COM)
jack.
2. For current measurements up
to 4000!A AC, set the function
switch to the !A position and
insert the red test lead banana
plug into the (!A/mA) jack.
3. For current measurements up
to 400mA AC, set the function
switch to the mA position and
insert the red test lead banana
plug into the (!A/mA) jack.
4. For current measurements up
to 20A AC, set the function
switch to the A range and
insert the red test lead banana
plug into the (20A) jack.
5. Press the SELECT button to
indicate “AC” on the display.
6. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
7. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display.
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