just fitted a dimming pull cord lightswitch in the bathroom but after much
head scratching as to why the fan wouldn't switch off after X minutes I
found the switch leaks, 24v to be precise, and it doesn't despite.
the LV lights don't work with that voltage but it's enough to keep the fan
running as it's the switched live.

anyone know a solution or supplier of a switch that doesn't leak ?

thanks

"SoWeezy" wrote in message
...
just fitted a dimming pull cord lightswitch in the bathroom but after much
head scratching as to why the fan wouldn't switch off after X minutes I
found the switch leaks, 24v to be precise, and it doesn't despite.
the LV lights don't work with that voltage but it's enough to keep the fan
running as it's the switched live.

anyone know a solution or supplier of a switch that doesn't leak ?

thanks

This one from TLC specifically states it is OK for use with bathroom fans...

http://www.tlc-direct.co.uk/Products/TLPCD51.html

Sparks...

In article ,
SoWeezy wrote:
just fitted a dimming pull cord lightswitch in the bathroom but after
much head scratching as to why the fan wouldn't switch off after X
minutes I found the switch leaks, 24v to be precise, and it doesn't
despite. the LV lights don't work with that voltage but it's enough to
keep the fan running as it's the switched live.

anyone know a solution or supplier of a switch that doesn't leak ?

What sort of transformer for the LV lights? Electronic or normal? If
electronic, changing to a wound one one should do it (but make sure it's
suitable). Or add a relay. The fan voltage sensor must have a high input
impedance so is sensing at near zero current.

--
*I wonder how much deeper the ocean would be without sponges*

Dave Plowman London SW
To e-mail, change noise into sound.

This one from TLC specifically states it is OK for use with bathroom
fans...

http://www.tlc-direct.co.uk/Products/TLPCD51.html


thanks Sparks...

What sort of transformer for the LV lights? Electronic or normal? If
electronic, changing to a wound one one should do it (but make sure it's
suitable). Or add a relay. The fan voltage sensor must have a high input
impedance so is sensing at near zero current.


transformers are electronic, but the fan isn't on a transformer, it's 240v
the switch isn't suitable for wound transformers
just bought a replacement from TLC, as suggested by Sparks, but it's the
exact same switch just in a different box

back to the drawing board...

In article ,
SoWeezy wrote:
What sort of transformer for the LV lights? Electronic or normal? If
electronic, changing to a wound one one should do it (but make sure
it's suitable). Or add a relay. The fan voltage sensor must have a
high input impedance so is sensing at near zero current.


transformers are electronic, but the fan isn't on a transformer, it's
240v the switch isn't suitable for wound transformers

The problem isn't with the fan as such but the high input impedance of the
electronic transformer. A wound transformer would shunt the leakage from
the dimmer to neutral. A suitable resistor across the electronic
transformer input might well do the same thing.

--
*I'm pretty sure that sex is better than logic, but I can't prove it.

Dave Plowman London SW
To e-mail, change noise into sound.