E26 Vs E27 Bulb Base

For more information about bulb shapes be sure to read more here.

E26 vs e27 bulb base.

The e26 is the standard 120 volt american base. Socket e26 stands for 26mm and the e27 for 27 mm in diameter. E26 stands for 26mm and the e27 for 27 mm in diameter. Those two standards are interchangeable meaning a us e26 will fit a european e27 base and e27 will fit in a e26 base.

Samples of bulbs with these bases. The european variant the e27 is rated at 240 volts. The e26 is rated at 120 volts. It is easy to put an e26 bulb into an e27 socket.

You may see low cost led bulbs using an e27 base on ebay and amazon from foreign suppliers. If you have a 240 volt incandescent vintage bulb you are able to use them in the us where the voltage is 120. The only difference is the voltage. The number following the e indicates the size in mm of the external thread screw.

E39 north america e40 goliath es in europe. The e27 is the european variant and is rated at 220 volts. Photo of the relative internal sizes of the sockets. In general bulbs with an e27 designation are safe to use in e26 lampholders but e26 bulbs may pose an electrical safety hazard when used in e27 lampholders and 240v ac.

E26 e17 e12 from left to right. Those two standards are interchangeable meaning a us e26 will fit a european e27 base and e27 will fit in an e26 base. E26 mes in north america e27 es in europe. The same size as a standard a19 bulb.

Thus a e26 has a 26 mm base diameter. However an e26 bulb can fit in e27 base and an e27 bulb can fit in e26 base without problem. E26 is 26 mm and the e27 is 27 mm diameter.