MCB tripping - double socket fault?

[ban-all-sheds]

Rather than do same again the electricianhas simply broken the ring between the two and, as I understand it I've now got effectively two spurs coming around, one from each side which don't then meet.

You now have two radial circuits.

This is fine apparently as there are only three sockets running off all this.

It's fine if he replaced the MCB with one with a lower rating. It's not fine if he left the original one in place.

 

[BS3036]

Rather than do same again the electricianhas simply broken the ring between the two and, as I understand it I've now got effectively two spurs coming around, one from each side which don't then meet.

You now have two radial circuits.

If they come from the same MCB, then technically I'd say it's one circuit. Sort of 'radial tree'.

 

[RF Lighting]

If the circuit does not return to the fuse box, it's just a radial, regardless of how elaborate, complicated or straight forward it is wiring path happens to take.

If it is protected by one OCPD, then how could it ever be anything other than a single final circuit?

"Sort of 'radial tree'" is just something you invented, and has noting to do with electrical circuits.

 

[Adam_151]

I'd refer to it as a 'branched radial circuit'

 

[BS3036]

You're quite right RF, but my main point was it's one circuit, not two. Yes I made up the description. Stupid me. I'm having a very bad day so try not to finish me off completely.

 

[ebee]

Yes Trees are allowed of any topology, providing of course the cables are terminated correctly.

Ban, have you made some assumptions?

Yes I think most of us would do too!

We are assuming the ring had a 30/32 OPD and was wired in 2.5 T & E and all conductor lengths are reasonable and loading not an issue . Then a 20 or perhaps 15/16 OPD(s) would be appropriate

 

[securespark]

try not to finish me off completely.

Just put your neck on the block and let's get this over with.