Light Bulb sockets E40, LES, SES Etc

[Diyisfun]

I thought LES = Large Edison Screw,
I have just read that is Lilliput Edison Screw.
LES seems to be GES Giant Edison screw.
So E40 ' (Mogul) Giant Edison Screw (GES)'

So what should I be looking for I am looking for Large Edison Screw energy saving bulb

 

[EFLImpudence]

I presume you mean an E27, i.e ordinary ES , i.e not small or giant.

 

[Diyisfun]

I presume you mean an E27, i.e ordinary ES , i.e not small or giant.

I always new it as LES (large), or SES (Small) so when did these E numbers start?

 

[Chri5]

http://en.wikipedia.org/wiki/Edison_screw

 

[EFLImpudence]

Not sure.

The numbers are millimeters so as Mr. Edison would not have used such dastardly things I can only assume it is the dreaded Europe.

Somebody will know when it started.

 

[Diyisfun]

http://en.wikipedia.org/wiki/Edison_screw

Chris, Yea I read that thats what confused me.

 

[Diyisfun]

The light fitting I just bought says 100w ES GLS Max bulb.
So the ES is not mentioning a size (This is an PIR Exterior security fitting)

 

[EFLImpudence]

ES is (standard) Edison Screw - E27

GLS is General Lighting Service - ordinary incandescent lamps, before all these new types came along.