bathroom electric towel rail connect

[jim]

Seeking confirmation as to correct or 'normal' connection method for an electric towel rail (around 500W) on a bathroom wall (which is well away from the bath).

What I envisage is:

1 Spur from ring mains (RCD protected circuit) socket nearby outside bathroom. to 2 Fused switch on wall outside bathroom wall with a neon indicator to 3 Unswitched spur connection unit with neon indicator near towel rail (final connection by flying lead)

Intermediate cabling (1 mm^2 or 1.5mm^2) to be buried in chasing under plaster.

Am doubtful about the cable spec from the ring connection to the first fused switch. Should it be in 2.5mm^2 cable?

Any comments most appreciated.

TIA

[Dave Plowman (News)]

Switched FCU outside the bathroom would be my choice with a cable outlet beside the fitting to change from the TW&E to flex. If the FCU is to be beside a lighting switch, you could make up one unit using grid switch components, although this will cost much more. And even situate the fuse elsewhere.

In general, yes. Although you could make a case that 1.5mm would be ok for a short run.