Fault Finding
Brown Blue Green Yellow
Preliminary Electrical Systems Check
START
Isolate appliance and carry out:
A:Earth Continuity check.
|
|
|
NO | YES | |
|
|
|
|
|
|
|
|
|
Carry out:
C:Polarity check.
Blue
BrownGreen
Yellow
Carry out:
D:Resistance to Earth check.
Has inlet fuse blown?
NO
Inlet wiring faulty. Rectify any fault.
|
|
|
|
| |
|
|
| Electricity supply | ||
|
|
| should now be | ||
YES | |||||
satisfactory. | |||||
|
|
|
|
|
PLUG (with cover removed) | SOCKET |
| |
|
|
| |
Earth Wire |
| (face view) | |
|
|
| |
Green/Yellow | ) |
|
|
( | E ( | ) | |
|
| ||
Neutral Wire | FUSE |
|
|
Blue |
|
| |
|
| N | L |
Isolate appliance and carry out:
B:Insulation check. Rectify any fault including replacing fuses as necessary.
19