Fitting A Triton 9.5 KW Shower

[eckie123]

I am fitting a Triton 9.5 KW shower. I am replacing the old circuit of 30A cartridge fuse and 6mm twin & earth direct to old 8.5 KW shower.
I will be replacing the 30 A cartridge fuse with a 45A MCB Wylex plug in type. Then taking 10mm twin & earth from 45A MCB in CU to a Wylex Fully Insulated RCD Shower Consumer Unit 63A 30mA DP. Then from this 10mm twin & earth to a 45A double pole pull switch. Then 10 mm twin & earth onto the shower.
My question is .... Is the RCD rating ok at 63A or would you recommend something else ??

Thanks

 

[flameport]

I will be replacing the 30 A cartridge fuse with a 45A MCB Wylex plug in type

What of the rating of the main switch on the fusebox? (should be a label under/near the switch)
If the label is missing, how many fuseways does the fusebox have in it?

 

[RF Lighting]

What is the rating of the main switch on the wylex fuse box?

Is the fusebox made from brown or cream colour plastic?


<edit> great minds think alike!

 

[LoveRocket]

Yes.

As long as the capacity of the RCD is greater than (or equal to) the rating of the MCB then it's fine.

(The 63A just refers to the maximum current the RCD can safely break, just the same as an isolator or other switch - it's not a 'tripping' rating or owt like that, no overcurrent protection from an RCD!)

 

[eckie123]

Wylex 6 point cream CU with 100A rating.

 

[eckie123]

Thanks Loverocket.
Thought I was on the right track but just wanted confirmation.

 

[ban-all-sheds]

I am going to be doing work which is notifiable and should be properly tested before being put into service.

• //www.diynot.com/wiki/electrics:part-p
  
  
• http://www.tlc-direct.co.uk/Book/8.1.1.htm
  

 

[LoveRocket]

I am going to be doing work which is notifiable and should be properly tested before being put into service.

• //www.diynot.com/wiki/electrics:part-p
  
  
• http://www.tlc-direct.co.uk/Book/8.1.1.htm
  

That's some nice paraphrasing there Banal, helpful too,