The recruits face one of the most feared phases of the course. | Channel 4

Continuity, Polarity and Insulation Resistance of our 2 way and Intermediate Lighting Circuit EAL Awards City & Guilds Students training aid for testing continuity of the CPC and polarity of a 2 way and intermediate lighting circuit. Full demonstration using a MFT Megger tester set on the ohms scale. 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 DC and the minimum acceptable value according