11
Making Basic Measurements
Preparation and Caution Before Measurement
:
Observe the rules
of
Warnings
and
Cautions
.
When connecting the test leads to the
DUT
(
D
evice
U
nder
T
est)
connect the common (COM) test lead before connect-
ing the live lead ; when removing the test leads removing the
test live lead before removing the common test lead.
The figures on the following pages show how to make basic
measurements.
TEST EQUIPMENT RISK ASSESSMENT (UK RECOMMEN-
DATION)
Users of this equipment and/or their employers are reminded
that Health and Safety Legislation require them to carry out
valid risk assessments of all electrical work so as to identify
potential sources of electrical danger and risk of electrical
injury such as from inadvertent short circuits. Where the
assessments show that the risk is significant then the use of
fused test leads constructed in accordance with the HSE
guidance note GS38 "Electrical Test Equipment for use by
Electricians" should be used.
