in line fan for 2 ensuite bathrooms

[foghorn]

hi and thanks
could some one give me a heads up on how to wire x1 inline fan with timer to activate with 2 bathrooms ie either switch will turn fan on switches located outside of the bathroom and fan has a triple pole isolator

 

[D Skelton]

Double pole switches. Lights on one pole, fan sw/l on the other.

 

[Octopus]

Or fit 2 fans - the downside of combined fans is that smells can move between the bathrooms if the fans arn't used!

 

[a1colly]

MeV as an alternate option

 

[atm84]

Double pole switches. Lights on one pole, fan sw/l on the other.

Why do you need a double pole switch? Surely a three core from a normal switch to the fan isolator would suffice.

 

[ImpededLoop]

You need a double pole if its for more than one room as the switch wire will back feed the light in the other bathroom otherwise.

 

[atm84]

Ok cheers

 

[uksparks]

I had this issue, I just put two fans in as there was no way to get around it.

 

[davesparks]

2 x relays will do it,

but common sense says just install 2 x fans.

 

[guest119]

Double pole switches, simples.
As many trigger points as you like, wired similar to an S plan heating system.
As post 2.
Relays, you would only need one as the switch pulling in the relay can break the backfeed with its spare contacts.
Only once did i come across it done with diodes. 3 wcs in an office.

boydy

 

[guest119]

I had this issue, I just put two fans in as there was no way to get around it.

Lightweight

 

[davesparks]

Double pole switches, simples.
As many trigger points as you like, wired similar to an S plan heating system.
As post 2.
Relays, you would only need one as the switch pulling in the relay can break the backfeed with its spare contacts.
Only once did i come across it done with diodes. 3 wcs in an office.

boydy

But with 2 x relays you could have the 3 amp fuse that fools obsess over installing for the fan without it affecting either bathroom's light when it blows.

 

[ImpededLoop]

But with 2 x relays you could have the 3 amp fuse that fools obsess over installing for the fan without it affecting either bathroom's light when it blows.

Slightly off topic, but apparently the NIC inspector around here picks people up on the 3A fuse for fans. Our local CEF have a range that they advertise as being 6A with manufacturers instructions to match to get around it!

Not NIC myself so can't verify the story, but can well believe it!

 

[davesparks]

Roll on amendment 3, manufacturers instructions will cease to be gospel and a bit if common sense may be allowed in once again!

 

[HandySparks]

Roll on amendment 3, manufacturers instructions will cease to be gospel and a bit if common sense may be allowed in once again!

If you're selective about which bits of the current regs you take notice of, you can choose your own way already: 510.3 "...shall take account of manufacturers' instructions."

Doesn't say you have to follow them to the letter.