32
Note: The IEE Code of Practice states that the maximum resistance should be no
greater than 0.1 Ohms + the resistance of the mains cable. Therefore, if the
appliance has a long mains lead then the allowable resistance can be higher than
the pre-
programmed 0.1Ω.
CAUTION
●
Follow the procedure described in 4.3.1 and do Null setting before a
measurement, but use the short EZYEXT lead instead of the MODEL7208
test lead, by plugging the EZYEXT into the Extension Lead Adaptor terminal
and the UK socket on the front of the unit.
●
When the terminal is open or the resistance value exceeds the measuring
range, “ > ” (over range display) appears on the LCD.
●
Do not touch the device under test whilst testing is in progress. Since a high
voltage of 250V or 500V will be present, the user may get an electrical
shock.
3.
P
ol
ar
ity
c
he
c
k
Polarity check
Polarity of L and N is correct.
(Pass)
Polarity of L and N is
reversed. (Cross)
Break in L or N
(Open)
