A19 refers to the shape and size of the bulb itself. “A” stands for Arbitrary — just the name of the shape that’s familiar to most of us. “19” refers to the size — in this case, 19/8″ (or 2 3/8″) across. E26 refers to the type and size of the base — the part that goes into the light socket.

Is A19 and E26 the same?

All A19 lamps have an E26 base, but not the other way around The standards that govern the dimensions and design of A19 light bulbs also dictate that it must use an E26 screw base. In other words, all A19 light bulbs also have an E26 base.

What is an A19 bulb used for?

From left to right: A19 LED filament bulbs in ceiling fan fixture, a 19 gold-tint LED filament bulb in porch light fixture, A19 LED fireworks bulbs in string lights, and a A21 LED bulbs in bedroom lamps. Standard/arbitrary (A) bulbs are the most widely used and thought of when it comes to household lighting.

Is an A19 bulb a regular bulb?

What are A19 Bulbs? A-Shape (“Arbitrary”) A19 LED light bulbs, or general service bulbs, are likely the light bulb shapes we are all most familiar with. It’s standard light bulb shape is so ubiquitous that this is likely the first form factor you think of when someone says “light bulb”.

Is A19 a standard bulb size?

For the most part, an A19 bulb can be considered to be within its dimensional requirements if it is within 112.7 mm in length, and 69.5 mm in diameter. According to ANSI standards, A19 bulbs must always use an E26 base for mounting into a light fixture.

What is an E26 bulb socket?

The term E26 refers to a light bulb’s cap or base – the bulb component that allows for both electrical and mechanical contact. The letter “E” in E26 refers to Edison Screw, the most standard of lamp bases, while the numerical “26” refers to its diameter in millimeters (approximately 1 inch).

What is A19 E26 bulb?

A19 refers to the shape and size of the bulb itself. “A” stands for Arbitrary — just the name of the shape that’s familiar to most of us. “19” refers to the size — in this case, 19/8″ (or 2 3/8″) across. E26 refers to the type and size of the base — the part that goes into the light socket.

Does A21 bulb fit A19?

Are A19 lamps compatible in A21 lampholders? Yes, because A19 lamps are smaller in all dimensions than A21 lamps, they will fit in virtually all fixtures and lampholders designed for A21 lamps. Since they utilize the same E26 base, the A19 lamps will fit into the socket just fine.

Is A19 the same as E27?

Most A19/A60 light bulbs come with an E26 type (i.e. 26 millimeters in diameter) in countries with a mains voltage of 100–120 volts, or an E27 type (i.e. 27 millimeters in diameter) in countries with 220–240 volts AC.

Can you use A19 bulb in recessed?

The A19 bulbs are not recommended for use in a recessed or fully enclosed fixture.

Article first time published on

Will a BR30 fit A19?

If you’re wondering whether you can fasten an A19 bulb into a fitting ideally suited for a BR30 bulb – ceiling lighting, can lights, and floodlights – the answer is yes.

What is the difference between an A19 and A21 LED light bulb?

A typical A19 is 2.375 inches in diameter (19/8 = 2.375) and 4.13 inches in height, while an A21 is 2.625 inches in diameter (21/8 = 2.625) and about 5 inches in height. … Save for the slightly larger bulb and longer neck, the A21 looks just like an A19, and it is intended for many of the same fixtures and purposes.

Is A15 same as A19?

A15 bulbs are slightly smaller than A19 bulbs and typically come in outputs ranging from 10 watts to 40 watts. These smaller wattages are frequently used in applications such as appliances, signage and decorative lighting. A15 LED bulbs have now started to appear.

Can I use A19 instead of E26?

So to answer your questions in short, A19 and E26 is not the same. two different parts of the same bulb, but they are almost always combined. … “E26” on the other hand indicates what kind of base the bulb has. Most A19s will have an E26 base, but there are a few exceptions.

How do I know what size light bulb socket I have?

The first letter designates the shape or form of the base, and the number represents the width of the base (normally in millimeters). For example, our 11S14 bulb has an E26 base — the “E” refers to the style which is an Edison screw-in, and the 26 means it has a 26 mm base width.

Is A19 the same as E12?

E12 is a designation used for a type of lamp base used on a light bulb. You are likely familiar with E26 lamp bases – the standard screw-in lamp base, approximately 1-inch in diameter, commonly used in standard A19 lamps. E12 uses the same naming system as E26, whereby the letter “E” signifies an Edison screw base.

What does A19 mean?

Bulb Shape The number that follows the “A” within the A series indicates the width of the bulb in one-eighth inch units or in millimeters. The most commonly used A-series light bulb type is the A19 bulb which is 2 3⁄8 inches (60 mm) wide at its widest point and approximately 4 3⁄8 inches (110 mm) in length.

Is E26 and E27 the same?

E26 stands for 26 mm and the E27 for 27 mm in diameter. These two standards are interchangeable, meaning a US E26 will fit in a European E27 base, and E27 will fit in a E26 base. The only difference is the voltage (for light bulbs).

Is a regular light socket E26?

A Medium or Standard base light bulb is also referred to as an E26 base light bulb.

Is A15 the same as E26?

There’s a “bulb size” and a “base size.” The bulb size is self explanatory. The A15’s are smaller bulbs, while the A19’s are larger. They both fit in a standard household medium base (E26 base.) … A15 bulbs are usually recommended in a close quarters area, maybe on a small lamp or something.

Are E26 and G25 the same?

The G25 shape is usually pared with a E26 (medium) base, similar to that of a standard A19 and come in outputs ranging from 25 watts to 60 watts. G25 LED Bulb Replacements G25 shaped LED bulbs now exist and are a great replacement for decorative and vanity applications.

What is standard light bulb base?

The most common bulb base in the US is the screw medium E26 base. It is used in most incandescent, nostalgic, LED, CFL and halogen light bulbs. The Candelabra E12 base is the second most common bulb base which is used for smaller decorative incandescent/nostalgic bulbs. The intermediate E17 base is not very common.

What size is a regular light bulb?

An E26 is the most common base size used in the manufacturing of incandescent, CFL, LED, and halogen light bulbs. The “E” stands for Edison and “26” means the base diameter measures 26 millimeters across. This base is also referred to as a medium or standard base light bulb.

Are there A19 LED bulbs?

A19 bulbs were originally manufactured using incandescent technology, but are now available as energy-efficient LED alternatives. These LED A19 bulbs are designed as a direct replacement for your existing incandescent light bulbs while consuming significantly less power.

What is standard light socket size?

The first and the most popular one is the Medium Screw Base (E26). This size is the most common for the incandescent and the LED Edison vintage bulbs. This size is the same as a standard household light bulb.

What is the difference between A19 and A23 bulbs?

The two digits following the letter represents the outside diameter of the light bulb at its widest point in eighths of an inch. For example, an A19 measures 2 3/8” diameter and an A21 measures 2 5/8” diameter, an A23 measures 2 7/8” in diameter.

Can I use a regular bulb in a can light?

A recessed fixture with a medium screw base lamp holder can take an incandescent, fluorescent, halogen, or LED light bulb. … If you want to be able to dim your recessed lights, or control them with a remote or automated system, choose fixtures you can use incandescent, halogen, or LED light bulbs in.

Can I use A19 instead of par20?

Yes! The A19 bulb is just a bit shorter than a BR20, so don’t expect it to extend down as far, but I had the same situation and I like the effect. The light is less diffused than the flood and standard bulbs, so they’re more like spotlights.

What is the difference between can lights and recessed lights?

Recessed lights, also known as can lights, are described as metal light housings installed in the ceiling for a sleek look that gives you back your ceiling.

Where can I use BR30?

Lighting and Application BR30 light bulbs deliver soft-edged, directional light and can typically be found in general household light fixtures, recessed can lighting, and/or track lighting. Their lighting is less precise and produces less shadow than PAR bulbs, but they are great for fixtures that use dimmer switches.

What does BR30 stand for?

The number following the letters in a recessed light bulb indicates size: it’s the diameter of the light bulb in eighths of an inch. So, a BR30 is 30/8 inches, or three and 3/4 inches.