"RichardS" noaccess@invalid wrote in message
.. .

"Andrew Gabriel" wrote in message
...
In article ,
Lurch writes:
On Mon, 28 Jun 2004 00:24:06 +0100, "John Stumbles"
strung together this:

Are mains and low volatge halogen bulbs the same size?

Yep, the lamps are the same physical size around the front edge.

Also note that it's pretty impossible now to buy anything
other than dichroic LV lamps. The mains ones are easily
available in both types, and if the fitting is designed
for mains full reflector type and you fit LV dichroic,
the fitting will get hotter than designed for.



Hmm, that's interesting - are the GU10 mains halogens not generally
dichroic
then?

The packet of a spare that I have in stock gives no more information on
this
than "Aluminiumised Reflector" - I had always assumed that they would have
been dichroic just as the LV ones are, but from what you say perhaps this
is
not the case.

Unfortunately the supplier's web site (John Lewis - you'd think they'd know
better) doesn't even say if the fittings are mains or LV. I'm guessing
mains.
http://www.johnlewis.com/stores/prod...rsid=1558&m=-1

I'm also planning to fit 20W LV bulbs rather than the original 50s (the
client wants lighting, not roasting :-) so even if the fitting is intended
for reflectors the heat back into it from dichroics shouldn't be too much (I
hope!).