Clipped surface

[growler]

Am I right in thinking a new circuit clipped on the surface doesn't require rcd protection ?

 

[ChrisElectrical88]

They don't really look ugly. Just a green and a red/blue switch instead of 2 white ones. As guitarist say though. I wouldn't even think about putting in a socket without RCD protection these days unless is was specifies or for special equipment (server, it equipment etc) also if its clipped direct does that mean no mechanical protection?

 

[growler]

yeah went for an rcbo in the end

 

[Guitarist]

yeah went for an rcbo in the end

Good man...

 

[alanl]

If this comes up again, 411.3.3 is the relevant Reg.
Basically,almost all socket outlets in domestic premises need to be RCD protected, unless they are only for the use of one particular appliance.

 

[Engineer54]

Listening to some here, it makes you wonder how we oldies all managed to stay alive without all these RCD devices being available in the past!!

 

[7029 dave]

Listening to some here, it makes you wonder how we oldies all managed to stay alive without all these RCD devices being available in the past!!

lol eng54 very true, but side of the times,the 21st century we have all got to be dragged into it ha ha(me kicking and screaming)

 

[Guitarist]

Listening to some here, it makes you wonder how we oldies all managed to stay alive without all these RCD devices being available in the past!!

Back in the olden days, there was something called "workmanship". Judging by some of the jobs I see these so-called "electricians" do, it's a damn good job that we do have RCD's.

 

[telectrix]

BUT JUST FITTING AN rcd TO ALMOST EVERYTHING IS ALL PART OF THE DUMBING DOWN.. SOD THE zS ETC, THE RCD WILL FIX IT.

 

[Guitarist]

BUT JUST FITTING AN rcd TO ALMOST EVERYTHING IS ALL PART OF THE DUMBING DOWN.. SOD THE zS ETC, THE RCD WILL FIX IT.

Indeed mate. We've had a few posts like that recently...."the Zs is really high on this TN system, but it's ok because it has an RCD...."

 

[Flanders]

I've seen high Zs's for RFC on fairly new installs but only because a type C RCBO was used ,if a type B had be used then the Zs would be satisfactory .So would there be any reason to change the RCBO to a type B so that the circuit is within the maximum earth loop? . I've never sited this as a deviation on a EICR as the disconnection time is achieved by the RCBO although I feel its an over site in the design stages.

 

[Guitarist]

RCD's/RCBO's are there as additional protection, not as a backup for a badly designed TN system.

 

[nickblake]

Indeed mate. We've had a few posts like that recently...."the Zs is really high on this TN system, but it's ok because it has an RCD...."

Argh I hate it when they say that all very well unless the /RCD fails I aways try and design the install so it gets the lowest Zs possible Regardless of an RCD , E54 I remember when I was a kid sticking my toe on the bars of an electric fire kept getting a tingle kept doing it , it was a very old VIR install single fuses in little wooden boxes wasn't till I did an inspection on the house 40 years later that I found the polarity was the wrong way round so I was zapping myself lol no wonder my hair looks like a monks

 

[telectrix]

makes me wonder then if the polarity had been the right way round, you might have got more than a tingle.

 

[driverman]

OP question Am I right in thinking a new circuit clipped on the surface doesn't require rcd protection ?

I thought only if you could see the whole length of the cable clipped to the surface from A to B. If cable went through wall to another room /location then rcd required.

 

[Guitarist]

OP question Am I right in thinking a new circuit clipped on the surface doesn't require rcd protection ?

I thought only if you could see the whole length of the cable clipped to the surface from A to B. If cable went through wall to another room /location then rcd required.

That's what you think?