The medium Edison Screw (MES) base has a diameter of 26 millimeters (approximately 1 inch) with a rating of 120 volts. This base type is common in North America and is used for general lighting. Besides the above categories of E-bulb base types, there are other variations you’ll find in the market. Though B11 bulbs have a distinct shape, there are other details of the bulb that you should consider: Base The E26 and E27 are usually interchangeable, as are the E39 and E40, although less so; although there is only a 1mm difference in thread outside diameter, there is a small difference in pitch; an E40 cap will often fit in an E39 holder but not the other way around. E11 and E12 are not interchangeable. Other semi-standard screw thread sizes are available for certain specific applications. [14]

The most common standard E-type bases are the E26 and the E27. The good thing is that you can use these bases interchangeably since they have a diameter difference of only 1 millimeter. The Medium E26 (MES) Base A base voltage of 120 volts is standard for residential use. However, suppose you decide to use a compact fluorescent light (CFL) for residential purposes. The E12 base is typically used for smaller, decorative light bulbs such as chandeliers and nightlight bulbs. It has a diameter of 12 millimeters (0.5 inches) and is primarily used in the US, where it is the standard size for candelabra bulbs. However, it is also used in other countries, such as Japan and Mexico. What’s an E14 Base? Specifications for all lamp mount types are defined in the following American National Standards Institute (ANSI) [12] and International Electrotechnical Commission (IEC) publications: Gauges for Electric Lamp Bases and Lampholders" (pdf). National Electrical Manufacturers Association (NEMA). 6 September 2019. ANSI C81.63 American National Standard . Retrieved 8 September 2020.Therefore, the E11 base has a diameter of 11 millimeters, while the E12 has a diameter of 12 millimeters. The numbers may sometimes be followed by letters such as S, D, T, or Q, representing the bulb’s number of pins from single to double, triple, and quadruple.

Given the qualities we’ve just highlighted, you’re likely to find E12 light bulbs in the following applications: Medium or standard E-type bulb bases are suitable for general lighting fixtures such as ceiling, vanity, flood, and outdoor lights. Wedge bases are designed to be easy to use and provide a secure connection. They can be found in a variety of sizes and configurations, depending on the specific application.The bulb’s body is what you might think of if you’re considering the shape of a candelabra. On the other hand, experts might associate candelabra bulbs with small-sized bases. When choosing between E12 and E14 LED bulbs, there are several key factors to consider to ensure that you choose the right bulb for your home lighting needs. Yates, JoAnne; Murphy, Craig N. (30 March 2021). Engineering Rules: Global Standard Setting since 1880. JHU Press. p.108. ISBN 978-1-4214-4003-3 . Retrieved 7 September 2020.

The Edison screw (ES) is a type of light bulb base that is universally used with electric light bulbs. Thomas Edison invented it and patented it in 1881. E26 bulbs generally have a longer lifespan than candelabra or intermediate base bulbs The Standard E27 (ES) Base These are the bases with the largest diameter. They are suitable for high-wattage bulbs like high-intensity discharge lamps, streetlights, reflector floodlights, and large decorative lamps. Besides the mentioned lamps, you can also use the candelabra E-type bases with the following bulbs: Usually, you’ll be able to find another code indicating the base type, or you can simply look at the bulb! If there’s no code specifying the base type, it’s most probably an E12. TypeSo, unless you’re in Europe, it’s safe to assume that a B11 light bulb has an E12 base. What’s a B11 Bulb? The name “Exx” is made up of the letters “E” for “Edison” and “xx” for the millimeter diameter measured across the peaks of the thread on the base (male).