On Tue, 05 Jan 2016 16:21:00 GMT, Harry Bloomfield
wrote:

230v filament lamps don't even exist. Harry as always!

You are of course very wrong. Any lamps intended for most of Europe are
manufactured as 230v. At one time in the UK you could buy 210, 220, 230
and 240v lamps. The reason being the variation in local distribution
voltages and filament lamps sensitivity to voltage.

Come back when you know your subject


NT

I do know my subject, but it is obviously a waste of time attempting to
explain that subject further to you.

I always check the voltage markings on lamps I purchase, to ensure they
are 240v intended for the UK market, because I often see 230v ones
intended for the EU on sale in the UK - FACT. Yes, I have been caught
out a few times. These last no time at all and are not worth the effort
of installing them.

Back in the pre 1960's you could certainly buy a variety of lamps with
voltages 210, 220, 230 and 240v. Checking the voltage required was as
important as checking the wattage of the lamp required - FACT.

After WW2 National service until he decided what work would best suit
him to my Dad assisted a buddy was starting a small electrical
business. In the end Dad decided to follow another career but a
remnant from that short stint was a carton or two of lamps.
All standard bayonet connection mainly around 40 Watts.
All were the same size physically
Voltages marked on them were 12 ,24,50, 100, 200,through to 250
although by the time I got to rifle through the boxes anything left
for 200 and above was coloured not clear which had been used.
Reason for having the variations is post war the mains was only just
arriving in the area but a lot farms had their own generators
supplying different voltages.
Over my growing up years I got through most of them ,making up
fittings that held lamps in series for use in Dads sheds or 12V
inspection lamps for use with vehicles or in my first road legal
vehicle an A35 van a decent interior light in the back.
The lamps were fitted into a fitting designed to hang in a shop window
as a Black and Black advert so that was double DIY points.

The coloured ones above 200v were used up in the outside Loo where
visitors got used to it having a green or orange light and for a
period blue thus predating public bog attempts to deter drug users by
50 years.

G.Harman