"Martin Angove" wrote
| In this case the fan has two live connectors. One to power the fan
| and electronics and one connected to the switched live feeding the
| lamp(s).
| I would have thought that your idea is bloomin' dangerous ...
| consider the case where the fan actually connects "SL" to "PL"
| internally, perhaps in a fault condition (who knows what the
| electronics do?). In this case you have created a huge circuit,
| partly wired in (usually) 2.5mm cable, partly in (usually) 1mm
| cable and protected by what amounts to probably a 38A MCB (32A+6A).

And if the lighting circuit in the bathroom and the socket circuit borrowed
from (because there shouldn't be a socket circuit in the bathroom ...)
happen to be on different phases ....

Owain