3 Lead RCD Test in the Consumer Unit on RCBO's Saving Time During the Live Testing's Process

Student training aid for testing an RCBO rated at 30mA using a MFT Megger tester. Includes a full demonstration of how to test the RCBO using 3 leads from with the consumers unit.

Note my default position is always 3 lead testing as it’s my preferred method of testing for Earth Fault Loop impedance when RCD protection is present. 2 lead tests can also be carried out for both testing RCDs and circuit Impedance.

Student trading aid for testing for external earth fault loop impedance Ze test using a MFT Megger tester. Please note this test is carried out with only the external earth path in circuit. Includes a full demonstration of the test in a domestic single phase installation in the real world.

Student training aid for the live test measuring prospective fault current PFC using a MFT Megger tester. Includes a full demonstration of how to measure PFC current. This test is shown being done out in the real world.

Live tests carried out in the video are...
Safe isolation
Supply polarity
External earth fault loop impedance (Ze)
Prospective short circuit current test PSCC
Prospective earth fault current test PEFC
RCD tests

== 🕐 Time Stamps - Cut to the action 🕕 ==

00:00 - 3 lead RCD test
00:44 - Isolating the board pressing the test buttons on the RCBO's
01:41 - Proving the outgoing side of the consumer unit is isolated
02:46 - Supply polarity
03:52 - External earth fault loop impedance test (Ze)
04:40 - Using a torque screwdriver
05:06 - PFC testing PSSC and PEFC
06:02 - Breaking capacity's of the incoming fuse and the RCBO's
06:16 - Testing the RCBO's form the top of the device
09:22 - Stickers on the front of the consumer unit

Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2, 3 plus AM2, AM2S and AM2E.

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