Klein Tools CL390 Manuel D'utilisation page 10

ENGLISH
TESTING IN CAT III MEASUREMENT LOCATIONS
Ensure the test lead shield is pressed firmly in place. Failure to use
the CATIII / CATIV shield increases arc-flash risk.
5/32"
(4 mm)
TESTING IN CAT II MEASUREMENT LOCATIONS
CAT III / CAT IV shields may be removed for CAT II locations. This
will allow testing on recessed conductors such as standard wall
outlets. Take care not to lose the shields.
AC/DC CURRENT (LESS THAN 400A)
AC Current is measured by pressing the clamp trigger
the clamp and placing it around a current-carrying wire. When
measuring, care should be taken to ensure that the clamp is
completely closed with trigger
passes perpendicularly through the center of the clamp in line with
the arrow markings
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OPERATING INSTRUCTIONS
0.7" (18 mm)
11 .
fully released, and that the wire
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to open
10