How to Test RCDs

Demonstration of testing an RCD, different test settings, expected results and alternate test method for situations which have two or more RCDs on the same circuit.

Tester used is a Fluke 1653. Other test equipment may have different ways to select the various test options, but the actual tests will be the same.

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[willnoble]

From a retired professional (non-electrician) instructor: The simplicity, clarity and delivery of your tutorials is the best I've ever seen. So many things demystified. Many thanks, John

[FlypastFMC]

Having been in the industry for the past 30 years, what a very good way for a refresher. Tutorials are excellent and they are my first port of call.
Thank you John, and i do hope you carry on passing your knowledge on forever.

[shamin]

Thank You, John! I had this "caravan park" type of situation yesterday. I had to test an RCD and there was other RCD behind it and of course the one that i wasn't testing tripped first and i didn't know how to workaround it.. but now i know, thanks to this video.

[apartmentswales]

I Hope everyone saw that great tip you offered for Testing an RCD without tripping any upstream devices, that is something I was never aware of in my 40yrs in the Industry, thank you for that little gem.
By the way, that Test Button was [I am talking decades ago] used to stop the RCD becoming Dormant and Locked, hence "Test Weekly" used to be the lable that came with the good brands.
Mr Spence Eng

[glennlorimer]

what a great well produced video audio was clear and crisp many people just talk nonsense and confuse the situation but you just talked facts and didn't waffle on this video is a credit to the YouTube community

[jonathanvallario]

You are like the Richard Attenborough of electrical theory. ❤ Great and relaxing presentation 😊

[rusrus]

superb video John, you are reaching  out to  a big Audience  on here.. keep the good work up. all the best.

[johnjeffreys]

Thanks John. I really liked the tip about how to test when there are two RCD's in series. Could prove useful.

[jamescroxford]

John, great advice on how to test an RCD with another RCD on the supply side!

[matthewrowe]

Nice clear stuff, got my first EIC cert to complete soon, all your videos are helping me to remember what I learnt last year. Many thanks.

[Thalasius]

Your videos are like gold dust. You have helped me tremendously!

[fitnhealthy]

Fantastic delivery and tutorial I’ve learned so much from you, please keep up doing videos John

[ZIOS]

Man ..JW . Thanks for uploading such stuff . we all appreciate your work. Thanks again.

[WorldEngineersOnline]

The Tests to perform are to be conducted on the RCD device "Before mounting into the CU" or " after mounted and energized in CU" ? The 1st test is really testing the Device compared to the 2nd tests which is Test in the System. Grateful for clarification. TQVM

[andrewturpin]

We test touring caravans on site or at customers home, for this situation it is very simple to use an isolating transformer inline to avoid tripping anything up stream

[robertcook]

Hi John - got one at the moment where Im only getting a result on one half of the sine wave - 0degrees. Any suggestions please?

[justifiedfreelybyhisgrace]

John I am just starting out and would like a fluke installation tester but was wondering what would be good to start off with for function and price? Would appreciate your advice thanks

[brownd]

Hi John, Are you using the RCD through an isolation transformer like on your other videos to prevent the test tripping your house RCD? If so what make is this transformer and where did you get it? Thanks.

[halogenlamp]

Very logical & clear (as all the videos you've made are) - excellent job.

[yesschembri]

Hi John, I am considering building a small unit to test RCDs ( purely a project, not to be a professional meter ) . Do you have any ideas what electronics these meters use to create the leakage current? I was considering switching some power resistors with relays, to create the various currents required, but is seems a rather bulky solution, especially to get also the x0.5 and x5. Also, the tripping current resolution will be crap. Suggestions?