Electrician Matt is carrying out an earth fault loop impedance testing (sometimes called the Zs test) on a 16 amp single phase and a 16 amp 3 phase industrial socket outlet (sometimes call a commando socket). This video Matt shows how to carry out the tests as well as the plugs and leads Matt has made up to make this test easier but your thoughts on if it’s safer are VERY welcome...

As always preparing for your end skills test AM2, AM2S or AM2E requires time testing at college and on-site experience of testing electrical circuits.

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

00:00 - Earth fault loop impedance testing
00:05 -16 amp single phase industrial socket outlet
00:30 - 3 lead low test
00:48 - Maximum Zs 2.2 ohms
00:53 -16 amp 3 phase industrial socket outlet
01:48 - Testing line 1 (L1) earth fault loop impedance
02:15 - Testing line 2 (L2) earth fault loop impedance
02:47 - Testing line 3 (L3) earth fault loop impedance

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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