Take the 2-minute tour ×  I live in Europe (so we're on 220V),
and in the house we've got two halogen spots (on a transformer)
on a plain switch.  Is it safe to replace the switch with a
dimmer (like these)? Do the transformer and/or halogen spots
need to be of a type that supports this? If so how can I tell if
the are already or not?  share|improve this question add comment
1 Answer  up vote 1 down vote accepted  Unfortunately, my lack
of Dutch comprehension prevents me from giving a definitive
statement on your situation (do you have an English translation
for those switches?). That said, I live in England and all of
the halogens (with their transformers) in my flat are on dimmer
switches, so it is absolutely possible to have dimmer switches
on your lights.  However, you are going to have to make sure
that the transformers that are currently installed in your house
will work with a dimmer switch (it is possible that yours will
not) by checking the manual or looking it up on the internet.
And definitely ta