UNI-T ut71c Operating Manual page 48

Note
l The current of the object being measured must >
10A.
5A continuous measurement is allowed.
l 5A~10A, only 10 seconds continuous measurement
is allowed and the interval between each
measurement must be greater than 15 minutes.
When power measurement has been completed,
first switch off the power, then disconnect the
connection between the adaptor and the outlet.
46
Model UT71C/D/E: OPERATING MANUAL