EARTH FAULT LOOP IMPEDANCE TESTING
In order to ensure the operation of the protective devices within the installation (such as MCB`s & RCD’s), the Earth Fault Loop Impedance value must be measured at the furthest point of the circuit and compared with the requirements found in BS 7671.
If the measured value is higher than the allowed in BS 7671, than the circuit is not safe.
- This test ensures house protection integrity & reliability