Ring or radial in bungalow

[Brightonbill]

I’m rewiring a bungalow and the owner has asked for a radial for all sockets except the kitchen. But there will be a separate washer and dryer in the circuit. Will a 20A radial be enough?

 

[telectrix]

Or pull 2x 2.5 16/20A radials for these appliances.

but that's 2 cables instead of 1, 2 MCB/RCBOs.. twice the effort and twice more expense.

 

[nicebutdim]

but that's 2 cables instead of 1, 2 MCB/RCBOs.. twice the effort and twice more expense.

Pulling 2x 2.5mm is little more effort than 1x 4mm and cost difference is negligible, but does add the cost of another breaker.

I'm just posting options in a thread that started with a paucity of them.

 

[Pretty Mouth]

This being a bungalow, the cables are likely to be run in the loft, which probably means some derating as they pass through insulation. This probably rules out a 4mm/32A radial. Personally, I'd wire this house as 2 rings.

 

[littlespark]

You choose the best solution for an individual circuit.

A single point… or two close together, then a radial could well be the best option…. But for the rest, where the points are dotted all around, then an rfc.

 

[telectrix]

the only decent form of loft insulation is foam or kingspan between the roof rafters. the 20ft. thick fibreglass needs banning. it's almost as bad as asbestos.