Please Help With Crabtree Starbreaker Board

C

cyberjunction

Hi Guys
AS some of you may know I am fairly new to the trade and passed my elecsa assesment a couple of months ago.

I am in the process of doing my first install of a shower ( for a friend ) and need some advice.

Firstly I had to run the cable from consumer unit to outside wall and used 20mm plastic conduit for a 20m run on 6mm cable all outside as their extension just didnt allow for it internally. The problem I have is when doing the conduit calc it only goes upto 10m, amd I doing something wrong? Is 20mm conduit OK for this installation at this length ( a bit late now I know ) .

Secondly the Crabtree Starbreaker Split level unit has an RCCB 100ma on the left which is a time delay one with 2 light circuits on it and a couple of spaces. Towards the right there is a 30ma with 6 circuits on it. My problem is I need to rcd protect the shower but there is no where to put it so I see my options as follows;
1. Fit RCBO - expensive but easy
2. Add the mcb to the 30ma RCD by moving the RCD but is this possible, my training was on a standard dual rcd board so this is totally new to me. It seems the buzz bar goes right through from the left RCD right through to the right, I assume they are split but not sure then how I would add the MCB.

Appologies for the questions they may seem simple to most of you guys but I do not have the privledge of working with anyone and learning as I go. I want to ensure safety and learn the correct way,

Thanks Guys
 
Last edited by a moderator:
Yes you can as long as all circuits are protected by an RCD ,ill pop and check for the RCBO in a tick its chucking it down here and being a spark i dont like getting wet especially on sundays
 
one of the lads has got one how quick do you need it

Nickblake
No rush a few days before I need to go back, if you have one for me that would be great, please pm your paypal address as i insist on covering your costs, just let me know hoe much, its very kind of you to help out this way.
thanks
 
you have to buy a genuine starbreaker RCBO anyway. as previous posts, i would fit RCBO in one of the spare ways off the 100mA. simplest and better division of circuits.
 

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