ELECTRICAL VERIFICATION
1. Visual Inspection:
A thorough visual check of the installation to identify any obvious defects or hazards.
2. Testing
2.1 Continuity of the Earthing System:
Ensuring a continuous and low-resistance path for fault currents to flow back to the source, which is essential for safety and proper operation of protective devices.
2.2 Insulation Resistance:
Measuring the resistance between live parts and earth to ensure the insulation is adequate and prevents unwanted current flow.
2.3 Polarity:
Verifying that all conductors are connected in the correct polarity and that there are no cross-connections.
Correct Circuit Connections:
Ensuring all circuits are correctly connected and terminated.
2.4 Fault Loop Impedance:
Measuring the impedance of the fault loop (the path a fault current would take) to verify that protective devices will operate quickly enough to disconnect the power in the event of a fault.
2.5 Operation of Residual Current Devices (RCDs):
Testing RCDs to ensure they trip (disconnect the power) within the required time when a fault current is detected.