How The Pros Diagnose And Fix A Light Switch That Doesn't Work

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