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sYmpTom anD probable Causes
a
symptom:
probable Causes
1
Rainy or high humidity
2
Nicks or cuts in heating cable sheath, with moisture
present
3
Kinked or crushed heating cable.
4
Arcing created by damage to the heating cable.
5
Physical damage to heating cable is causing a direct
short.
6
Presence of moisture in terminations or connections
7
Damaged termination
8
Moisture in junction boxes
b
symptom:
probable Causes
1
Circuit breaker undersized
2
Defective circuit breaker
3
Short circuit in electrical connections
4
Excessive moisture in connection boxes
5
Nicks or cuts in heating cable sheath, moisture present
6
Kinked or crushed heating cable
7
Defective RCD
8
Excessive earth leackage current, RCD trips
38
Insulation resistance less than expected
Circuit breaker trips
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