Continuity of CPC (R1 + R2) and Polarity of our 2 Way Lighting Circuit and Insulation Resistance

Demonstration shows how to set up your Megger MFT tester and carry out an insulation resistance test for a 2 way lighting circuit. Test voltage is 500V d.c. and the minimum acceptable value according to BS 7671 is 1 megohms with further investigation when the reading falls below 2 megohms. Also shows and explains the need to switch both 2 way switches into the other on position and repeat the insulation resistance test.

Videos are training aids for City and Guild (C and G) and EAL courses Level 1, 2 and 3.

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