Do all light bulbs fit the same socket?
There are two common socket types, which are the classic screw socket (Edison) and the pin socket. All replacements are 1:1 possible without any mechanical or electrical adjustments.
Why is 277 volts used for lighting?
277 Volts is the input power of choice for most industrial and commercial applications. High voltage lighting is better from an efficiency standpoint. Higher voltage means less current, which means less power loss from resistance as stated in Ohm’s and Joule’s laws.
What is the standard socket size for light bulbs?
E26
Medium or Standard: E26 (26 mm in diameter) is the size of the majority of light bulbs used in the United States. Mogul: E39 (39 mm in diameter) is utilized for street lights and high-wattage lamps.
Are light bulb sockets standard?
Light bulbs have to fit snugly into light fixtures, so they are designed with different bases. The light bulb base has to match the socket in the light fixture. If light bulb bases were standardized, light bulbs could be interchangeable across many fixtures. However, light bulb bases are not standardized.
How do I know what socket My light bulb is?
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. The first letter designates the shape or form of the base, and the number represents the width of the base (normally in millimeters).
What is an E26 socket?
E26 is also commonly referred to as a Medium Edison Screw (MES). An E26 bulb, therefore, is any bulb or lamp that utilizes the E26 cap or base for mounting and electrical contact. You can most instantly recognize an E26 bulb by looking at the bottom, or non-light emitting side of the bulb.
Are E26 and E27 the same?
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). In fact there is only 1 mm difference between the threads of E26 and E27, so they are virtually identical.
What are the different types of light sockets?
About Light Bulb Base Types
- E39 – Mogul.
- E26 – Medium.
- E17 – Intermediate.
- E12 – Candelabra.
- E11 – Mini Candelabra.
- E10 – Miniature.
- E5 – Midget.
Are E26 and A19 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 the difference between E26 E27 and A19?
E27 (or E26 here in the USA) is the size of the socket screw base, also called a medium base. A19 is the sandard indoor light bulb shape. They also have a BR30 shape bulb that fits into the standard ceiling can fixtures and it has the E26 medium base as well.
Can I use A21 bulb instead of A19?
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.
Can I use A15 instead of 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.
Is E26 the same as A15?
The A15’s are smaller bulbs, while the A19’s are larger. They both fit in a standard household medium base (E26 base.)
What does A15 mean on a light bulb?
Numbers in each code refer to the bulb’s diameter in one-eighths of an inch. A15 bulb: 15/8 = 1-7/8″ diameter. A19 bulb: 19/8 = 2-3/8″ diameter. A21 bulb: 21/8 = 2-5/8″ diameter.
What do the letters on light bulbs mean?
Bulb Shapes and Sizes
The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. The mosts commonly used household bulb is the A-19. The bulb is “A” type and the diameter would be 23/8″. A 65BR40 is a 65 watt reflector 5″ in diameter.
What does the B stand for in light bulbs?
B can indicate one of three different shapes. When it is used by itself, though, it stands for bullet. A bullet light bulb is a cylinder with a rounded end, like a tubular incandescent bulb, but with a base that is smaller than the glass cylinder. A BR bulb is a bulged reflector bulb.
What does +C mean on a light bulb?
C and CA series bulbs are also similar, meaning Candle and Candle Angular, respectively. They still use the same E-series base, albeit with a smaller diameter. Then there are G series (Globe) bulbs, which are entirely spherical.
