What Is The Base Of A Standard Light Bulb

However an e26 bulb can fit in e27 base and an e27 bulb can fit in e26 base without problem.

What is the base of a standard light bulb.

Incandescent bulbs used to be the industry standard but laws now require new energy efficient standards for basic light bulbs. Find the light bulb base type you re looking for with this visual chart detailed illustrations of general bases fluorescent bases and specialty halogen base types. Shoppers of led light bulbs often confuse the specifications for base type e26 or e27 and bulb shape a19. E26 is 26 mm and the e27 is 27 mm diameter.

They may have a different shape from standard a shape bulbs or have a smaller candelabra base. Candelabra a smaller screw in base denoted most often with an e12. Bulbs with these base types can be used interchangeably as there is only a 1 millimeter difference in base size. For medium base ceiling fans rough service bulbs work the same way.

All standard 100 75 60 and 40 watt incandescent bulbs have been phased out and will no longer be produced. Bulbs with these bases are the most popular of all screw base bulbs. Screw in bulbs use a base called an edison screw or es base. The extra thick filament extends the life of the bulb when used in high vibration applications such as a ceiling fan or garage door opener.

No matter how the end user places the light bulb base into the socket it will always turn and lock into the same position every time creating a fail safe for the light bulb s operation. A further explanation of the light bulb base sizes you can look at the letter number references e12 e17 and e26 to help understand a bulbs base style and size. A19 bulbs are the most common light bulb shape so this is what you ll see the most. This base was developed by thomas edison for the first light bulbs and is still in use today.

They are commonly used for general lighting in standard light fixtures such as ceiling lights lamps can lights outdoor spotlight and flood light fixtures and. The first letter designates the shape or form of the base and the number represents the width of the base normally in millimeters. The light bulb base and socket are manufactured in a way that predetermines the light bulb s position in the socket. Many specialty incandescent bulbs such as chandelier bulbs will remain available.

1 888 455 2800 fax 1 508 363 2900. Standard medium a regular sized screw in base usually denoted with an e26 or e27. Screw in bulbs use a base called an edison screw or es base. The e26 is the standard 120 volt american base.