Testing, Fault Finding and Commissioning
Lesson index for this training block.
Lesson 40
Visual Inspection Before Testing
What to inspect before instruments come out and why this prevents dangerous tests.
Lesson 41
Continuity of Protective Earthing Conductors
R1+R2 concept, bonding continuity and interpreting low-resistance readings.
Lesson 42
Insulation Resistance Testing
Test voltages, preparation, sensitive equipment and abnormal readings.
Lesson 43
Polarity Testing
Switching the active, socket outlet checks, borrowed neutrals and dangerous reversals.
Lesson 44
Earth Fault Loop Impedance
Fault loop concept, disconnection thinking and interpreting loop readings.
Lesson 45
RCD Testing and Leakage Faults
Trip current, trip time, ramp testing, nuisance tripping and cumulative leakage.
Lesson 46
Fault Finding Method: Divide and Prove
A structured approach to open circuits, shorts, earth faults and intermittent faults.
Lesson 47
Commissioning Records and Certificates
How to record readings, limitations, defects and corrective actions professionally.