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Old 18.07.2007, 15:12
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Light bulb socket: Swiss vs. US

Are they the same, or different? I have to decide if I can bring some floor standing lamps (halogen and regular). I'm hoping the halogen bulbs (long thin 300W mounted horizontally) should be the same but how about incandescent ones? Can I just simply put in 220v bulbs? Is the socket threaded and it is the same as the US? (Yeah, right! It's probably Metric!!! )
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Old 18.07.2007, 15:35
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Re: Light bulb socket: Swiss vs. US

This US Electrical Conversion; advise requested. might help. Mildly covered.

Anyone with true experience of just going with uprated bulbs?
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Old 18.07.2007, 15:44
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Re: Light bulb socket: Swiss vs. US

Standard fittings

A light bulb with a standard E26 Edison screw base



The double-contact Bayonet Cap (N.B. the bulb shown is actually a CFL.)


Most domestic and industrial light bulbs have a metal fitting (or lamp base) compatible with standard threaded sockets. The most common types of fitting are:
  • Candelabra screw base, used in nightlights and Christmas lights, and by some halogen bulbs.
  • MES or medium Edison screw (E26 - one inch), used in North America and Japan for most 120 and 100-volt lamps. A slight variant of this base, E27, is used in Europe and elsewhere in the world with 220-240V household voltage.
  • BC or B22 or double-contact bayonet cap, used in Australia, India, Ireland, New Zealand and the UK for most 220240V mains lamps and is used in the US for certain 120V lamps in appliances such as sewing machines and vacuum cleaners. (E27 also common in Australia and the UK.)
  • G4 or GY4 for dualpin/bipin (looks like a miniature wall connector) halogen lamps with the number being the centre-to-centre distance in millimeters.
  • R7S-75 for halogen lamptubes, in this case a 7 mm diameter socket with 75 mm tube length.[29]
In each designation, the E stands for Edison, who created the screw-base lamp, and the number is the diameter in millimeters. (This is even true in North America, where designations for the actual bulb glass diameter are in eighths of an inch.) There are four standard sizes of screw-in sockets used for line-voltage lamps:
  • candelabra: E12 North America, E10 & E11 in Europe
  • intermediate: E17 North America, E14 (SmallES) in Europe
  • medium or standard: E26 (MES) in North America, E27 (ES) in Europe
  • mogul: E39 North America, E40 (GoliathES) in Europe.
  • There is also a rare "admedium" size (E29), incompatible with standard and used to frustrate thieves of bulbs used in public places; and a very miniature size (E5) generally used only for low-voltage applications such as with a battery.

----------
Taken from here.


Edison Screw specifically for US :
http://en.wikipedia.org/wiki/Edison_screw

dave



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Are they the same, or different? I have to decide if I can bring some floor standing lamps (halogen and regular). I'm hoping the halogen bulbs (long thin 300W mounted horizontally) should be the same but how about incandescent ones? Can I just simply put in 220v bulbs? Is the socket threaded and it is the same as the US? (Yeah, right! It's probably Metric!!! )
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Old 18.07.2007, 16:41
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Re: Light bulb socket: Swiss vs. US

Well, am I right interpreting the above that the Euro screw base is 1 mm bigger? That means that an E bulb bought there won't fit an imported US lamp, right (assuming Swiss precision)

Is there a way to buy an 220v E26 base bulb?

Also, I don't see anything about the halogen bulbs (IKEA has them too in the US).
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