radial from ring main

[Soulsurfer]

Did you stop for breath there at all?

Ha ha I did but was pretty wound up when I got in from getting interrogated by the muppets that are doing this rubbish work ! Bit hard to explain while off the top of my head but it is garbage and as Pete has posted below to the OP on this older thread, surely by reading Appendice 15 even a layman or apprentice would understand basic ring finals and radials ! lol

 

[valleybilly]

1. 
   Reasons you shouldn't:
   1. It is prohibited by 434.2.1 - "The part of the conductor between the point of reduction of cross-sectional area or other change and the position of the protective device shall not exceed 3m in length..."
2. 4mm clipped direct 36 amps . he is increasing not reducing the csa. Still a stupid idea thou lol.

 

[Soulsurfer]

1. 
   Reasons you shouldn't:
   1. It is prohibited by 434.2.1 - "The part of the conductor between the point of reduction of cross-sectional area or other change and the position of the protective device shall not exceed 3m in length..."
2. 4mm clipped direct 36 amps . he is increasing not reducing the csa. Still a stupid idea thou lol.

Agreed Billy, although just had main contractor on phone texting asking me wtf is going on and why I'm not happy with it ? I said basically it's rough and bad practice and in extreme could overload one or more legs of essentially now a mixed circuit between ring and radial, also a pain for next electrician who comes into place and scratches his head plus ring system now flawed by the endless spur off spur carry on. He's telling me that a BS number isn't going to cut it with him etc.. I said I'll be the one doing the cutting in cutting ties with his gang ! lol

 

[sparkdog]

I thought it was a yellow book, or is that the AA?

 

[Chr!s]

hi there, would like your views on this.. Jb off a ring main and run two or three socket,s on a 4mm radial. I myself don,t mind it. no current capacity issues.and no zs problem,s if rcd protected.Any thoughts.

Hi, there is no technical issue with this other than load distribution.