For example, some people mistakenly assume that the terms “LPS” and “SOX” are interchangeable with each other when in fact they are not and there are people who assume that all coated mercury vapor lamps are “deluxe coated” or “deluxe white”. Are there any other misconceptions about lighting besides these two?

In Switzerland - and I think only in Switzerland, not in Germany or else where in the German spoken region - people mistakenly tend to call a fluorescent tube Neon lamp which is of course in the most cases wrong. It does has nothing to do with Neon as Neon emits most of its light in the orange/red part of the spectrum. That’s what I explain them always.

For example, some people mistakenly assume that the terms “LPS” and “SOX” are interchangeable with each other when in fact they are not and there are people who assume that all coated mercury vapor lamps are “deluxe coated” or “deluxe white”. Are there any other misconceptions about lighting besides these two?

That low levels of blue light causes cancer, myriad eye diseases, the entire hepatitis alphabet, testicular implosion, or other ridiculous health problems. Yet, by some conspiratorial mechanism that is never explicated, the ultra high levels of blue light present in sunlight are harmless.

Testicular implosion!  , that’s a new one for the ‘blue light hazard’ myth!

Yeah, the problems of low levels of blue for sell their LED sheet. 
Also the Facebook conspiracionists say that LEDs have 5g mind control beams. I haven't checked what more they added, just search "LED 5G" LMAO. 

Testicular implosion!  , that’s a new one for the ‘blue light hazard’ myth!

Well, fortunately that's one problem we're unlikely to suffer from

Another misconception that I see with lighting is that people say that European fluorescent starters and European HID lamp ignitors always need a 220-240v mains supply in all cases. They would assume that these components would not work in 120v countries such as the US or Canada. In fact, I have had some European HID lamp ignitors and fluorescent starters work on a 120v mains supply, but on autotransformer ballasts that have a 220-240v OCV. I also see that in the USA that many people will say that it is impossible to run a metal halide lamp in a mercury vapor fixture in all situations. However, I proved these people wrong by telling them that getting special HID lamp ignitors from Europe can allow probe start and pulse start metal halide lamps to run on mercury vapor ballasts.

In Switzerland - and I think only in Switzerland, not in Germany or else where in the German spoken region - people mistakenly tend to call a fluorescent tube Neon lamp which is of course in the most cases wrong. It does has nothing to do with Neon as Neon emits most of its light in the orange/red part of the spectrum. That’s what I explain them always.

Calling fluorescent lamps neon lamps is also quite prevalent in French, although not in every French speaking areas. I know that in France and in Québec, Canada, the term is widely used, but not in my area, however.

Another misconception that I see with lighting is that people say that European fluorescent starters and European HID lamp ignitors always need a 220-240v mains supply in all cases.

Who has said this..? Can you provide an example, please..? If not, please remove the question as it is in itself misleading if not true.

 I hate it when some one thinks power factor have to do with lamp brightness on ballas.   I have some HX fluorescent ballast that runs lamps at full power 430 mA.   

   One thing ive learn in lighting on fluorescent is a term called ballast factor not to be confused with power factor.

    As power factor has somthing to do with current is being out of phase with the line voltage .5 power factor is when current is 90 degrees outta phase with voltage sine wave.

  Ballast factor used for lamp brightness
   1 is full power  1.15 means lamp is over driven
   .65 is under driving the fluorescent lamps.

     As most cheap HX ballast will have a laging power factor
 And low ballast factor for residental market.   In the year 2000 and up lower ballast factor  HPF rapid start ballast came into play to make T8 looked good by underdriving the T12s
 When full power halophosphate  T12 were banned in 1995 .
     

   

Who has said this..? Can you provide an example, please..? If not, please remove the question as it is in itself misleading if not true.

I saw another lighting collector say something like this when he had European SOX fixtures in Canada and said that the SOX ignitors need a 220-240v mains supply and would not work on 120v mains.

I saw another lighting collector say something like this when he had European SOX fixtures in Canada and said that the SOX ignitors need a 220-240v mains supply and would not work on 120v mains.

Who..? Link please. Don't forget SOX is not HID, nor is it fluorescent. Please be specific - "something like" isn't good enough. Please do not make claims that cannot be substantiated.

Who..? Link please. Don't forget SOX is not HID, nor is it fluorescent. Please be specific - "something like" isn't good enough. Please do not make claims that cannot be substantiated.

This is a quote from Michael V “the hic i am concern the sox european ignitor i have is for 240 volts , not 120 volts”. He is an avid collector of low pressure sodium lighting. This is quoted directly from one of his direct messages to me on his Instagram account.
"Mod edited to remove last name"

The only one I've seen is the general misunderstanding between the terms power factor and ballast when describing fluorescent ballasts. Power factor (PF) is computed from the phase relation between voltage and current in a ballast circuit and it the ratio between real power and apparent power while ballast factor (BF) is the percentage at which a ballast drives a lamp compared to a ANSI reference ballast which we assume to be 1.0 BF.

The ballast factor usually a dimensionless value between 0.50 and 1.2. A 0.5 BF ballast would only drive a lamp at 50% power compared to the ANSI reference while a BF of 1.2 means a ballast drives the lamp at 120% power compared to the ANSI reference.

I think the confusion arose when ballast manufacturers typically made high PF ballasts marketed to higher end residential and commercial also with a higher BF and conversely made the low PF ballasts marketed to entry level residential users with a lower BF so people associated power factor with ballast factor.   

This is a quote from Michael V “the hic i am concern the sox european ignitor i have is for 240 volts , not 120 volts”. He is an avid collector of low pressure sodium lighting. This is quoted directly from one of his direct messages to me on his Instagram account.

That's quite possible. Depending on the specific device (you don't say which model) it may well be designed for a 220-240V supply. From what you quote, he didn't say that ALL SOX ignitors need 220-240V, just that the one HE is using does. I am not familiar with the specific parameters of all available equipment, and I doubt you are either.

So if you, me or anyone else is to decide what will work with what, then we need ALL the relevant information, not just some of it, and not ambiguous statements such as "something like."

You are a very keen and prolific poster; this isn't necessarily a bad thing, but please try and make your questions meaningful and your statements verifiable.