No. of spurs v No. of ring skts.

[Duncan Bennett]

They are very tight but the touch is to put a 47mm box in and set it back as far as possible

My thoughts, exactly

 

[telectrix]

or, install a 4mm radial instead of rfc.

 

[Engineer54]

or, install a 4mm radial instead of rfc.

How you going to loop 4mm cables on the grid switches?? lol!!

 

[topquark]

You count each DP grid switch as equivalent to a socket outlet, so you haven't got more spurs than ring connections have you?? I'd hate to think of the amount of cables in the back boxes of these grid switches.... I bet it get's tight for space in there too!!

It does, they're a pain in the 4rse for no real benefit, other than not having to walk too far to isolate "everything" beneath the worktop.

 

[tonycoysh]

How you going to loop 4mm cables on the grid switches?? lol!!

Yeah, the couple that I have done were awkward enough with 2.5, I would hate to be wiring one in 4mm.

 

[sedgy34]

grid switch and unswitched socket for me the fuse is in the plug top on the appliance

 

[PC Electrics]

For all the little loops behind the switches use stranded single 2.5 rather than solid, makes fitting it in so much easier.

Strictly speaking 20A DP switches (whether stand alone or grid) are not suitable for an RFC because in 7671 only accesories to BS1363 should be used on an RFC. Daft if you ask me.

I wouldn't bother with grid fuses - just cluttering up the tiled surface and duplicating the fuses in the plugs.

The main consideration in this type of design is to try and position the grid as near the centre of the ring as you can. Too close to one end and you have an unbalanced ring with the danger of overload on the short leg.

 

[PC Electrics]

Better still - forget the grids and just fit the sockets accessible in adjacent cupboards, all on the RFC.

 

[Duncan Bennett]

Am I right in interpreting RFC as Ring Final Circuit ... rather than Rangers FC )