Rcd or not

[Liam howe]

Morning guys,

Need some quick advise without having to look through the bible to find the answer.

Installing a small 4 way unit into a domestic property to supply a new oven which requires 3 seperate supplies of 16amps.

Does the new sub board im installing need to be rcd protected or not?

Thanks
Liam

 

[LeeH]

That cannot be answered with the information given.

And it's a pretty fundamental question TBH.

 

[telectrix]

are cables fed from this sub buried in walls < 50mm deep?

 

[Liam howe]

Im guessing it needs an RCD, but i dont like guessing hence advice. Im an industrial installer dont work on dwellings much.

The cables are buried in walls less than 50mm yes

 

[Bobster]

The regs are the same for industrial and domestic.

 

[Pete999]

Where are you feeding the new sub board from?

 

[Liam howe]

From the last spare way in the main consumer unit

 

[Pete999]

Im guessing it needs an RCD, but i dont like guessing hence advice. Im an industrial installer dont work on dwellings much.

The cables are buried in walls less than 50mm yes

Domestic Installer Commercial Installer now an Industrial Installer, that's a DI,CI and II, what next?

 

[kingeri]

Surely you must know the requirements for providing RCD protection?

 

[Pete999]

From the last spare way in the main consumer unit

Is the last way protected by an RCD or RCBO?

 

[Liam howe]

Im asking for advice not your cocky remarks. Ive just started out on my own and now having to think for myself.

I dont know every page of the regs yet like you oldies and i havent got time to check them.

No theres no RCD protection in the property at all.

 

[Pete999]

Well then you have your answer.

 

[telectrix]

reg 522.6 101, i believe. (BGB).

 

[The Ghost]

When you say three separate supplies of 16a are you meaning a three phase cooker or three part cooker? Sorry it thats a dumb question. RCD are required for all sockets in domestic, period. It also applies to industrial, commercial. It stipulates RCD for cables in walls, portable equipment for use outside and sockets generally. I would say that putting an RCD as additional protection is not a bad thing, however the regs don't stipulate that for a cooker unless the switch has a socket in it. Look at 411.3.3

 

[Liam howe]

No not three phase. All single phase seperate supplies. Doing this as there different parts of the cooker and if theres a problem with say the warmingg tray thats in the oven if that doesnt work atleast the other parts will. No sockets on the oven supplies at all just hard wired.

 

[telectrix]

you could of course use one of the other methods of protection stated in 522.6.101. eg. use SWA.

 

[Wilko]

Even feeding the new board needs to be thought about.

 

[PEG]

Im asking for advice not your cocky remarks. Ive just started out on my own and now having to think for myself.

I dont know every page of the regs yet like you oldies and i havent got time to check them.

No theres no RCD protection in the property at all.

Hi my friend,i would urge you to edit that,you will get a more cordial response

 

[Andy78]

Hi my friend,i would urge you to edit that,you will get a more cordial response

I'll rescind my planned remark on that post in light of this much more diplomatic response

 

[PEG]

Kofi Onan is me middle name.