Why RCBO's are BETTER than RCD's | Thomas Nagy

I finally settle the debate on which is better, an RCD or an RCBO!

I go into more detail in response to some of the comments I received in episode 2 of Nagy weekly where I discussed the reasons why I prefer RCBO's as opposed to fitting RCS's.

#RCDvsRCBO
#RCBO
#ThomasNagy
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✏️: Don't forget to drop your video suggestions in the comments section below

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▶️ Timecodes ◀️

🔵 0:00 - Intro
🔴 1:17 - Replacing main switch with an RCD (PROBLEM!)
🔵 3:22 - More circuits = More leakage
🔴 3:37 - Why dual RCD boards are not made for big town houses!
🔵 7:00 - The dangers of a dual RCD board for electricians
🔴 9:35 - RCBO's are SAFER than an RCD
🔵 11:18 - Different types of circuit breakers
🔴 12:37 - RCD will not detect DC leakage
🔵 14:02 - The price difference

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▶️ WARNING ◀️
This video is for entertainment purposes only. If you use the information from this video for your own projects then you assume complete responsibility for the results.

[jamesashdown]

The new camera is sure good, great res and super quality pic!
Nice work on the Lighting even got a back light in too!
Great content as ever. Full respect

[igorantczak]

Loving the constant uploads Tom, keep it up!

[robswingler]

I agree that dual rcd aren’t the best but in a court of law you would show them page 36 - 37 of the on site guide which completely contradicts the 2 x regs you said and approves the use of dual rcd boards.

[anthonybragg]

I am surprised that dual RCD boards are still being sold with AC RCD's

[coralbay]

You and dave savoury are awesome sparks. So informative. Cleared up a few things in my struggles 🙌

[billverdon]

Great video as always. Totally agree about RCBO's. Spent lot's of time investigating faults with dual RCD boards. Many people do not understand that there are different types of RCD too. Hope to see more of your outside commercial work. All the best from Bill

[richardbinnie]

As an old retired plumber I have no understanding what you are talking about BUT I really enjoy watching. Thanks for the excellent enjoyable and entertaining content. Good luck with everything you are doing.

[cjselectrical]

Often RCD protection is not needed on EV charging circuits if there is RCD protection (usually 6mA) built into the unit itself. A type AC RCD won't trip because the DC current will actually freeze the RCD in place - that's how a no-trip Zs test works.

Great video Tom, keep them coming 👍

[robinhadley]

I bought a 7 way Fusebox board for my shed and Rcbos. Way overboard for what I need but it was cheap and I know whatever I put in the shed/workshop will be protected.
I think it was only £120 for the lot.

[smikers]

Totally agree Tom, I wouldn't fit anything else than RCBO.

[roamingwithrej]

This is one of your best videos IMO (as a trainee electrician)! Please create more videos like this and you’ll be getting 👍🏽 on a regular basis from me and others I’m sure 😁

[RaithUK]

I only ever fit RCBO boards and with Type A rcd not AC and always chuck in the SPD as well. I simply wont fit type AC or a split-load boards unless there is a very specific requirement.

[jesseoconnell]

That opening shot with the black bucket truck and LED running lights behind you in the bright orange jacket looked so cool!!!

[mkelectrical]

Great video, I personally avoid fitting dual rcd boards for same reasons you mentioned in video (present faults) no rcd prior. After explaining benefits to the client of type A rcbo's boards (future profing/safety) 95% of my clients go ahead with RCBO boards. Fusebox Type 2 SPD loaded whith RCBO's is my standard setup currently.

[tflemming]

Older kettles? How do modern kettles differ?

[danelaw]

Many thanks for that, instructive and enjoyable. This gives me more confidence to discuss what I really want the electrician who will be swapping out my old (fuse-wire cartridge) fusebox with a consumer unit, to supply and fix.
Although our house is not a large one, I feel happier with RCBO's-makes sense to me.

[Jay-jrro]

Fantastic explanation Tom, really appreciate you and your teams effort that go into these videos.

Even though I got my qualifications from college, I've found that content like this is worth its weight in gold.

In years to come I can see you in more of a teachers role but if you fancy teaching sooner I'd love to pop down the unit with biscuits 😉

All the best....Postie Jay thats met you a few times 🤣

[kristhox]

Another advantage with RCBO's is with lightning strike, there's a really small chance of it tripping unlike RCD's who are much more sensitive. In Norway we stopped installing RCD's for 10-12 years ago except for Type B RCD which is mandatory to install with EV's (regulated in 2014) Only when we install a wallcharger with DC filter (Easee Home charger) there's no need for type B RCD

[cjkokay]

I am amazed that UK has not regulated the AC type out. NZ has been type A for a very long time now and a max of 3 MCB downstream per RCD.

I would prefer RCBO as it also has less space as we have to fit double pole version.

[abcelectric]

Totally agree with you Tom. Been fitting Hager Type A RCBO boards for the last 2 years. Won't quote or fit a split load RCD board anymore as I don't think they're fit for purpose. As you say, if the client wants a split load board then I don't want that client