Are E27 and B22 lamp holders interchangeable?

No. E27 is a screw-cap connection and B22 is a bayonet connection. A change requires more than matching the apparent size of a bulb. The holder, fitting and supply arrangement all need to remain suitable.

Does E27 describe the size of the shade ring?

No. It describes the nominal screw-cap diameter of the bulb. Shade-ring and barrel dimensions are separate measurements. Compare them with the shade’s actual attachment rather than using the cap marking alone.

Can I use an LED bulb in an older holder?

Possibly, if the cap, supply, dimensions and operating conditions are compatible. Check the limits of the complete fitting and any dimmer. The fact that a bulb screws in does not establish every part of its suitability.

Does a ceramic holder allow a more powerful bulb?

Its stated ratings and the limits of the lamp still apply. The shade, cable and enclosure can impose their own restrictions. The material name alone is not permission to increase the load.

What is the difference between GU10 and GU5.3?

They have different contacts and retention methods. GU10 locks with a turn, whereas GU5.3 uses straight pins in a matching holder. The correct supply arrangement must also be confirmed from the equipment information.

Will every holder support a lamp shade?

No. Shade support depends on the body, rings or other attachment provided for that design. A suitable bulb connection does not automatically provide the correct mechanical support for a shade.

Does a metal cover make a holder weatherproof?

No. Weather suitability depends on the complete construction and its declared protection. The cover’s appearance does not establish resistance to rain or dust.

What if I need more than the holder itself?

Check the included parts and identify any separate flex, covers or support components needed for a compatible assembly. Explore the wider lighting accessories using the fitting’s dimensions and requirements as your starting point.

{{ item_option.name }}:	{{ item_option.value }}
Quantity:	{{ lastProduct.quantity }}
Price:	~~{{ lastProduct.price_before_discount \| currency }}~~ {{ lastProduct.price \| currency }}

Quantity:	{{ basket.quantity }}
Basket value:	~~{{ basket.value_before_discount \| currency }}~~ {{ basket.value \| currency }}

Lamp holders | Page 3

Filters