In article
,
Vet Tech wrote:
I was about to install a dimmer switch module (MK K4501 BSS BLV) to
control a group of 4 low voltage halogen downlighters that are each
supplied via their own individual ( 220 volt a/c to 12 volt DC)
transformer.

But, the installation instructions says that the dimmer should not be
used in a circuit with more than 3 transformers.

Almost certainly only applies if actual transformers - the switch on surge
with these is vast and you usually have to half (or more) the dimmer
rating with them. If you changed them (or even a couple) to electronic
'transformers' the restriction doesn't apply. One of these to supply 2 x
50 watt units costs under a tenner.

Can someone, who knows about electricity theory please explain the
reasons behind this limitation. And, if more than 3 were connected,
what would happen?

--
*24 hours in a day ... 24 beers in a case ... coincidence? *

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