You will need a light bulb with the correct base type to fit in the light socket. Most Charles Edwards fittings use light bulbs with standard Edison screw bases, for example a product listed as E12/E14 will take an E12 Edison (E) 12mm screw base for the USA or an E14 Edison (E) 14mm screw base for the UK or Europe.
Please note if you have specified an IP44-water-resistant-bulb-fitting that this fitting takes a G9 bulb. We recommend use of SEGULA 50609 LED with our IP44 fitting. This bulb fits well in the glass casing and is fully dimmable.
Wattage and Lumens
The brightness of traditional (incandescent) light bulbs is stated by the wattage of the bulb. The higher the wattage, the brighter the bulb. All Charles Edwards light fixtures have the number of bulbs and maximum wattage stated.
A more useful way to see how much light a fixture emits is by considering lumens. A lumen is a measure of brightness. The more lumens in a light bulb, the brighter the light. LED light bulbs use less energy (watts) than incandescent bulbs to produce an equivalent amount of light (lumens). When replacing an incandescent bulb just look for an equivalent amount of lumens in an energy saving bulb.
Simply by changing the traditional incandescent bulbs for a low energy alternative with more lumens you can increase a light fixture’s brightness.
This emphasis on Lumens not Watts has underpinned legislative changes covering the manufacture and sale of bulbs across the globe.
Lumens are a measure of brightness. The more lumens in a light bulb the brighter the light. When replacing a traditional incandescent bulb just look for an equivalent amount of lumens in an energy saving bulb.
Incandescent bulbs Energy-saving bulbs
100W – 1600 lumens
75W – 1100 lumens
60W – 800 lumens
40W – 450 lumens
25W – 230 lumens
Source : US Energy Department
Colour Rendering Index (CRI)
Colour Rendering Index measures how true colours look. Traditional incandescent bulbs and halogen bulbs have a ‘perfect’ CRI of 100.
Colour Temperature is measured in Kelvin (K), depicts the appearance of the light. Light bulbs with a lower colour temperature (2700-3000 K) produce a warmer light than a light bulb with a higher colour temperature (4000 K +).
We recommended that picture lights used for fine art should be fitted with bulbs that have zero heat and zero UV to ensure that the artwork is not damaged by the lighting.