Minimum IP rating for bathroom fan?

[Clitheroe]

Hello Everybody

I know somebody who has a wall mounted bathroom fan to remove steam etc which is mounted directly above the shower. I have referred to the fan in a previous topic and the present fan no longer works.

If the person wants the fan replaced what would be the minimum IP rating? (despite my electrical knowledge I am a bit rusty on IP ratings).

Also I take it the fan would require RCD protection which if an ordinary fan with live and neutral may be supplied from an RCD FCU but with fans with a timer been supplied from 3 core and earth cable from the lighting circuit how would this be achieved? The propert currently has no form of RCD protection.

Many Thanks

 

[ColJack]

rcd protect the lighting circuit.. simples

IPX4 for equipment in zone 1..

no switches allowed in zone 1 or 2 though, so fan isolator needs to be outside of zone 2.

 

[wingcoax]

Isolator in final run of cable to fan.