In sequence the first three tests carried out on a ring circuit would be
A) L-L, N-N, E-E
B) Ring final circuit test, insulation resistance test, earth fault loop impedance
C) Ring final circuit test, polarity, insulation resistance test
D) All conductors end to end, L-N cross connected, L-E cross connected

Question

Quizplus · Accepted Answer

The first three tests carried out on a ring circuit should be the ring final circuit test, insulation resistance test, and earth fault loop impedance. The ring final circuit test will confirm the correct connection of each conductor and that continuity exists around the ring. The insulation resistance test will identify any breaks or insulation defects in the cable. The earth fault loop impedance test will determine the effectiveness of the earthing system and identify any faults or malfunctions in the protective devices.

In Sequence the First Three Tests Carried Out on a Ring