PrimeTest 100
Operating Instructions
16
•
Plug the supplied 0.5m red IEC lead into the IEC
socket
and into a mains outlet on the
extension lead. Plug the mains plug of the
extension lead into the front panel mains socket
on the PrimeTest 100.
•
The extension lead can now be tested in the
same manner as an IEC as described above.
Note: The protective earth resistance will depend
upon the length of the extension lead and the
size (cross sectional area) of the cable. The
measured value maybe be acceptable even if a
cross is shown next to the
R
PE
enunciator.
Table 1: Approximate resistance of protective
earth conductors.
Cord size / current rating
length
0.5mm
2
/(3A)
1.0 mm
2
/(10A)
1.25 mm
2
/(13A)
5m
0.20
0.10
0.10
10m
0.40
0.20
0.20
25m
1.00
0.50
0.40
For further information on protective conductor
resistance and testing of portable appliances can be
found in the Code of Practise for In-service
Inspection and Testing of Electrical Equipment
published by the IEE.