E10, E12 & E27 vs E14 Bulbs: A Complete Comparison

When choosing a bulb, determining the right type can be a bit challenging. One needs to carefully select the bulb size, as even a slight difference in screw base size can make the bulb incompatible.

In this guide, we will explain the dimensions of E14 bulbs and other base screw sizes to help you make an informed decision. Ready to dive deeper? Here we go!

What Does “E” Stand For in Bulb Codes?

You may have noticed that most of the bulbs have an ‘E’ in their codes. Ever wondered why this letter stands for? Well, the “E” in bulb codes refers to the Edison Screw, named after Thomas Edison.

The Edison screw is a standard type of light bulb base. The number that follows E in bulb codes indicates the diameter of the bulb’s screw base in millimeters. For example, an E14 bulb has an Edison screw base that is 14mm in diameter. 

It’s essential to note that the lamp holder is always larger than the screw to ensure the bulb fits in smoothly and securely. The table below compares the most common screw sizes in terms of their holder and cap diameters:

E10 Bulbs: The Miniature Edison Screw (MES)

E10 light bulbs are a Miniature Edison Screw base bulb with a diameter of 9.3mm. These light bulbs are designed to fit into a 10mm lamp holder. 

With their compact size, these bulbs fit perfectly in vintage light fittings, including old chandeliers, toy trains, model lamps, and indicator panels. Due to their small size and decorative appearance, they are often used to enhance the overall aesthetic of the place.

However, they are not typically used in general household lighting fixtures and are more popular among hobbyists and DIYers for miniature lighting projects.

E12 Bulbs: The American Candelabra Base

E12 bulbs, with an Edison screw of 11.5 mm, fit into a 12 mm lamp holder. Referred to as the American Candelabra Base, this size is commonly found in the United States, particularly in vintage candelabra-style fixtures, such as chandeliers and decorative wall lights. 

In Europe and the UK, E12 bulbs are not very common and are not readily available in local markets. However, you can get one through online bulb retailers. 

E14 Bulbs: Small Edison Screw (SES)

E14 refers to a Small Edison Screw (SES) base bulb with a 13.5mm diameter, fitting into a 14mm holder. This bulb is widely used in European-style fixtures.

E14 bulbs are commonly found in residential lighting. These bulbs are ideal for smaller or more decorative fixtures, such as wall sconces, chandeliers, and desk lamps.

With their availability in various shapes, i.e, candle, reflector, and decorative filament, E14 bulbs are widely used in stylish light fixtures. 

While comparing E12 vs. E14 bulbs, it is essential to understand that these bulbs can be used interchangeably. However, doing this is possible only with the aid of an adapter.

E27 Bulbs: Edison Screw for Standard Fixtures

E27 bulb has a screw base of 26 mm and fits nicely in 27 mm bulb holders. The bulb type is not used in chandeliers but is common in other standard lamps, ceiling lighting fixtures, and some commercial lighting fixtures.

While comparing E14 vs. E27 bulbs, people often find themselves confused about which bulb to use for decorative lighting and which one to choose for general lighting.

The answer to this question is straightforward: use E14 bulbs for smaller, decorative fixtures and opt for E27 for general lighting fixtures.

Side-by-Side Bulb Base Comparison Table: E10 vs E12 vs E14 vs E27

A side-by-side comparison of different bulb base sizes is given below to help you choose the option that is perfect for your needs:

Can You Interchange E10, E12, and E14 Bulbs?

At first glance, the E10, E12, and E14 bulbs may look the same; however, they are not technically the same. This means that these bulbs cannot be used interchangeably.

While comparing E10 vs E12 bulbs, note that E10 bulbs are designed for use in miniature lighting and operate on low voltage. Using E10 bulbs in a socket designed for high-voltage bulbs can significantly reduce the performance of the bulbs and also pose electrical hazards.

E12 and E14 bulbs, having the same size, are often used interchangeably using an adapter. While using these bulbs interchangeably, ensure that you check the voltage, shape, and fitting depth to avoid any issues.

Using a bulb that is not compatible with the fixture can lead to a fire risk. So it is essential to double-check the bulb code and the socket size of your fixture when replacing a bulb.

How to Measure Your Bulb Base Accurately?

To ensure you get the right bulb type for your indoor or outdoor lighting fixtures, it is essential to measure the base of the bulb accurately. To calculate the base bulb easily, follow the steps given below:

• Use a ruler or measuring tape to measure the width of the lamp holder. By measuring the lamp holder, you can find out the bulb that can fit in this holder. For instance, if the lamp holder measures 14 mm, the bulb that fits it is an E14 bulb.

• Don’t just measure the screw threads on the bulb; instead, measure the inner fitting. As screw threads are smaller than the socket, measuring them is not a great idea. Additionally, the code refers to the socket diameter, not the screw diameter.

It is recommended to check the bulb code mentioned on the product or, in the case of online shopping, on the product page, to ensure you are selecting the correct bulb type. 

Choosing the Right Bulb: Final Tips

When you are in the market looking to choose the right bulb type, the following tips can help you:

1. For miniature projects, choose an E10 bulb. 
2. For U.S. candelabra lights, choose an E12 bulb
3. For small indoor lighting fixtures, especially in the UK and Europe, choose an E14 bulb
4. For general lighting, floor lamps, ceiling fixtures, and household uses, choose an E27 bulb.

Conclusion

The difference between E10, E12, E14, and E27 bulb bases is very subtle, of a few millimetres only, but they all serve different purposes. Once you understand the bulb size and the type of base it uses, you can easily make the right choice.

When choosing any light source, ensure your fixture is compatible with it. Additionally, choose a reputable lighting supplier, such as Risun Corp, to enjoy cost-effective lighting solutions in the long run.

Risun Corp: A Reliable Partner for All Your Lighting Needs!

With years of experience, Risun Corp is a trusted partner for all your lighting needs. Our commitment to excellence differentiates us from others.   

Our expert team uses an innovative approach to deliver tailored lighting solutions. With a deep understanding of the market, we consistently meet the evolving needs of our clients.

Contact us now for a personalized quote! Elevate your business to the next level!

FAQs

Q1. What is the E14 bulb size?

The E14 bulb features a 14mm diameter screw base. It is commonly known as the Small Edison Screw (SES). These bulbs are typically used in Europe and the UK for small fixtures, such as chandeliers, bedside lamps, and ceiling lights.

Q2. Are E14 bulbs being phased out?

No, the E14 bulbs are not being phased out. Despite technological advancements, these bulbs remain popular. The availability of these bulbs in various shapes makes them ideal for use in decorative lighting, which further contributes to their popularity.

Q3. What types of light bulbs and lamp holders does Risun offer to cater to diverse lighting needs?

Our collection spans from energy-efficient LEDs to versatile CFLs and unique specialty bulbs. For the lamp holder types, we also have a wide range of them, such as E26/E27, E12/E14, GU10, GU5.3, GU4.0, G9, G13, etc, to meet the different needs of various types of lamps, and to meet your needs of one-stop purchasing easily.

Q4. Does Risun offer bulk purchase discounts?

Absolutely! Risun values large-quantity orders by offering special discounts. 

Partnered with hundreds of trusted manufacturers, enabling us to deliver a truly one-stop lighting supply solution with consistency and reliability.