I’ve been thinking about this one. Could it be a misunderstanding in that what was meant by ‘bunching’ was not the connection of, for example, two radials to one protective device per se, but the close proximity of possibly heavily-loaded conductors, giving rise to heat dissipation issues.
Of course, that’s what the word normally means anyway. Could this be a friend-of-a-friend Chinese-whispers confused story?
I agree with Pevvers in that multiple radials combined count as ONE final circuit.
I’m interested since I’m in the middle of a major domestic rewire and am deliberately designing a few circuits like this to save DB ways. Hasn’t this been standard practice for years?
For example, the house already has three odd single 13A sockets, each on its own long 2.5mm radial with nothing else. These are legacy additions from a few years back. What on earth could be wrong with putting them all on one 20A RCBO? There’s no way they would all be loaded at once – diversity clearly applies – and even if it didn’t the cables are well covered anyway.
I’m trying to engineer out maintenance and potential sources of faults, so don’t want junction boxes all over the place. I hold that the best place to join these wires is at the visible, easily-accessible breaker.
