How to Test an RCD - BS 7671 Amendment 2

Changes to BS 7671 under Amendment 2 of the 18th Edition of the Wiring Regulation requires RCD’s to only be tested on the AC setting regardless of the Type of RCD and at the rated residual operating current of the device. This simplifies the testing process so even if you have an A, B or F Type RCD you only need to test it on the AC setting of you MFT tester and at 1 x delta n (often this is 30 mA) with a maximum disconnection time of 300 ms.

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[NordenEngineering]

Im a retired electrician but only sub contracted so I only ever installed but didnt get to do the testing. I've learned more from the internet in a very short period than while I was working.

[LITTLEEXPERIMENTCHANNEL]

Thank you for these dedicated instructions to electrical knowledge and equipment use.

[foodandstuff]

I remember working in a museum as a apprentise and had a big yellow tester with a strap around the neck and I was asked to test the phases and I put the probes on the wrong cables and blew the entire tester up, it sounded like a box of glass and the electrician with me just laughed his head off and then had to explain it to the boss. I think it was around 800 pound

[chainsawsandgenerators]

Only the British can make something so simple seem like your going to the moon

[terrysteel]

Clear and concise excellent instruction

[MAAZAD]

What the hell!!! Massive respect to electricians man. Have to say the British standard is next level. ! Looks complicated

[altintahiri]

Where in regs says that you test all Rcd at AC settings on the tester?and specifically for type A Rcd please
We had commission team arguing that you can not set the tester ac to test A type Rcd

[alanmarriott]

What’s the point of having type A setting then in megger tester if we only test on AC setting?

[topchannel]

Im just wondering if there is any way of changing the auto switch to do x1 only and no trip test ?

[hoonsurdaddy]

Why do you test all rcds as of they are AC type?

[peterwithers]

In your GSH video "RCD Testing Made Easier....?#shorts" you say all loads should be removed. This is also stated in the GN3 brown book page98 paragraph 2. So does the load include the cabling and should it be disconnected with the test done at the RCBO? With RCDs it was simpler as the RCD test could be preformed at the board with the MCBs off (although strictly speaking the neutrals may still be in circuit).

[gino]

I failed my am2 because I did not do the half time test first Gary. Gn3 stats half times then 1 X tests.

[alistair]

Whats max disconnection time for x1 is it still 200ms?

[daniel-ino]

Never have seen such a test done in Europe. Is this a UK thing?

[mist]

Dont understand testing on 0° and 180°
Would be zero voltage on 240v a sine wave form ?

[adamkerrigan]

Any comment on why you haven’t done half times?

[samthomas]

where in the onsite guide does it tell you the maximum trip times?

[stevelawrence]

So why did they upgrade the testers with ramp testing?

[haseebali]

hi the first was on 0 degree and the second was on 180 degree how you change the degree
I am not exactly sure about that.

[shamrockshore]

So the rcd failed to trip in less than 30ms for 30ma test.