Continuity of CPC and Polarity of a 1 Way and a 2 Way and Intermediate Lighting Circuit (R1 R2) Students training aid for how to test for continuity of the CPC and polarity of a 1 way and a 2 way and intermediate lighting circuit. Full demonstration using a MFT Megger tester set on the ohms scale. We also demonstrate how to prove polarity by operating the switches and we also record the highest continuity reading in ohms as R1 R2 in our testing paperwork. Videos are training aids for City and Gu

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How to Carry Out the Continuity of the CPC & Polarity Test on a Lighting Circuit Using an R1R2 Link In this video I demonstrate how to carry out a combined continuity of the circuit protective conductor (CPC) and polarity test on a 1 way lighting circuit. To carry out this test the circuit is proven to be isolated and the main switch is locked off. I use BS 7671 On-Site Guide section 10 to illustrate the testing procedure and the position of the link within the consumer unit. The R1R2 link has a