Testing an ‘A’ Type RCBO 10 Times and NOT the Standard 5 Tests to Prove the Effectiveness of the RCD

In this video we show how to test an ‘A’ type RCD but not 5 times as standard practice but 10 times. We show how to test this ‘A’ type RCBO with our Megger MFT set on the AC setting and then test it 5 times. Next on the Megger MFT we select the ‘A’ setting RCD function and test the RCBO again a further 5 times.

We would carry this test out 10 times on any ‘A’ type RCD and NOT just because it is a Wylex one with our learners at Tresham College.

Socket outlets rated up to and including 32 amp under the 18th Edition Wiring Regulations BS 7671 require additional protection by an RCD rated at 30mA or less.

Also under the 18th Edition Wiring Regulations BS 7671 all RCD’s require functional testing at a maximum of every 6 months intervals.

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

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