by ericmark »
Thu Feb 26, 2015 10:26 pm
There is a massive problem with the lighting industry for some reason manufacturers seem to use words completely wrong and I have no idea why. Some examples.
Low Voltage is defined as 50 ~ 1000 vac but I have seem many lamps labelled low voltage when in fact they are extra low voltage i.e. less than 50vac.
An AC switched mode voltage regulated power supply labelled as an electronic transformer.
A DC switch mode voltage regulated power supply called a driver when a driver is a current regulated device.
The phrase electronic ballast seems to cover both switch mode controlled high frequency units which have voltage regulation built in and also a simple wire wound ballast with an electronic starter built in.
Lumen is a real problem with three different standards some measure each LED and add the results together, some measure to combined output which is normally less and some wait an hour before measuring the latter a requirement for vehicle lamps.
English is an odd language there was a TV advert for a program which pointed out change of use. Awful being a good thing as full of awe which is near reverse of today's meaning. Decimate to kill one in ten a very precise word but now used to mean get read of near everything. The jolly miller of the dee was blithe and gay this had nothing to do with his ******* tendencies and to comb ones hair is to attend to ones toilet.
The USA have both retained old English and swapped meanings so we have tended to encompass both. We understand what a fender, hood, and trunk are but they don't understand bumper, bonnet, and boot. I worked at one time on Chevrolet and trying to work out what they called a track rod end was a real problem. A track rod is called a push/pull bar.
On the Falklands I heard then talking about a Hogget yet they have no pigs in the end I realised it was a female sheep which was fertile but had not yet born young. It was an English word but I had never heard it. But they did not understand bovine.
I am sure you ken what I mean. English is a live language and unlike near every other language the dictionary is made showing common use of the word. Most others the seats of learning tell the populate what the word should mean.
I still can't understand were plug top comes from? To me it's a plug. The very end grates on me and I met a Scotsman who genuinely thought you can have worst, worster and worstest!