Is this valid for a fan isolator?

[23vc]

I’ve never found any reference to this way of wiring a fan isolator and timer fan (no lights involved, just a switch to control the fan).

I can’t see anything fundamentally wrong with it, but please correct me if that’s not the case.

Connected to fused 5a feed. All Earths connected where available.

 

[EFLImpudence]

You just need a double pole switch which will act as an isolator as well.

You don't have to have an isolator, you know.

 

[EFLImpudence]

Does the fan have a run-on timer?

Yes, I see now.

 

[23vc]

Cheers. Yeah, it has a timer. As far as I can see, this meets the requirements. Just never seems to be done like that that I’ve seen.

 

[mikehammer69]

The fan isolator is also isolating the control switch

There’s no reason to do that but it will operate as normal

 

[23vc]

The fan isolator is also isolating the control switch

There’s no reason to do that but it will operate as normal

Yeah, exactly. Better explanation than I gave. Just checking there isn’t anything wrong with it even if it’s a bit unnecessary.

 

[mikehammer69]

The issue with it would be troubleshooting , in theory

It’s better to be able to operate the fan controls with the fan isolator off and check supplies there at incoming side

So would be bad practice anyhow

 

[EFLImpudence]

Just checking there isn’t anything wrong with it even if it’s a bit unnecessary.

It just looks a bit odd.

I would do this but no different really - or the switch could be connected to the fan terminals.

 

[JohnD]

You don't have to have an isolator, you know.

However, if the fan is supplied from a lighting circuit (which is very common) a fan isolator enables you to safely clean or maintain it, without having to work in the dark.

 

[EFLImpudence]

However, if the fan is supplied from a lighting circuit (which is very common) a fan isolator enables you to safely clean or maintain it, without having to work in the dark.

Don't be silly.

 

[23vc]

Cheers all, will redo it.

 

[mikehammer69]

Don't be silly.

That’s not silly

Isolating supply for maintenance

 

[pete01]

However, if the fan is supplied from a lighting circuit (which is very common) a fan isolator enables you to safely clean or maintain it, without having to work in the dark.

Don't clean it in the middle of the night.

 

[SUNRAY]

Don't clean it in the middle of the night.

Or in a bathroom without a window

 

[ebee]

If you are using more than just a one gang switch to operate the the bathroom light then you might not want the Perm L to that switch isolating as well if it irs supplying say the landing light or a nearby bedroom either.
My preference would usually be - (say if 3 plate wiring to a rose or a light unit ) from the rose to the 3 pole isolator then from the 3 pole isolator to the fan, That way the 3 pole isolator only isolates the fan and nothing else.