Standard North American Light Bulb Base

The designation exx refers to the diameter in millimeters even in the u s where the bulb glass is listed in eighths of an inch.

Standard north american light bulb base.

There are four commonly used thread size groups for lamps. 1 888 455 2800 fax 1 508 363 2900. Edison screw es is a standard lightbulb socket for electric light bulbs. The e27 is the european variant and is rated at 220 volts.

The e indicates an edison screw base and 26 is the diameter in millimeters. There are many different standards for lampholders including early de facto standards and later standards created by various standards bodies. E26 is 26 mm and the e27 is 27 mm diameter. The us 120 volt screw base is an e26.

Bu here is the technical correct names. A lightbulb socket light socket lamp socket or lampholder is a device which mechanically supports and provides electrical connections for a compatible electric lamp. This base was developed by thomas edison for the first light bulbs and is still in use today. E26 mes in north america e27 es in europe mogul.

It s not something you see often named. Each base type has a descriptive term such as medium intermediate candelabra etc and they re defined by the letter e edison followed by numbers. E17 north america e14 small es ses in europe medium or standard. E12 north america e11 in europe intermediate.

Sockets allow lamps to be safely and conveniently replaced re lamping. For bulbs powered by ac current the thread is generally connected to neutral and the. In north america and europe these light bulb base types are the most common and widely used. In 120 volt north america and 100 volt japan the standard size for general purpose lamps is e26.

Screw in bulbs use a base called an edison screw or es base. Use this handy guide to identify different types of light bulb bases that apply to incandescent halogen high intensity discharge fluorescent and led light bulbs. Screw base bulbs often called edison bulbs are named after their inventor thomas edison. The e26 is the standard 120 volt american base.

In the us standard household light bulb bases are also called medium screw base presumably to distinguish them from mogul considerably larger bases than medium screw base candelabra base considerably smaller bases than medium screw base and mini candelabra even smaller than candelabra base the designation a19 does indeed refer to the style and size of the glass. The bulbs have right hand threaded metal bases caps which screw into matching threaded sockets lamp holders.