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 (UK and Europe), or G4 (USA) halogen bulb. View the fitting guide HERE
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 common question is can the wattage in a fixture be increased in order to increase the amount of light?
The problem with traditional incandescent light bulbs is that they waste energy (wattage) radiating heat as well as light. The additional heat that a higher wattage incandescent bulb creates may start to cause problems over time, as there will be too much heat build-up within the fixture. 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. Energy saving bulbs such as halogen light bulbs and 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.
UK & Europe Legislation: The phased ban on the sale of incandescent lightbulbs is complete following the EU directive to reduce energy use of lighting.
USA Legislation:The Energy Independence and Security Act (EISA) came into effect on Jan. 1, 2011, in California and Jan. 1, 2012, throughout the U.S. This legislation requires all light bulbs to be upto 30% more efficient. This is a gradual phase out of inefficient bulbs.
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.
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 +).
The use of the light fixture and the environment it is in should be taken into consideration when selecting a light bulb. The temperatures that the bulb will be exposed to, whether the bulb is dimmable and the number of on/off switches in the bulb lifetime are all factors which will determine if the light bulb is fit for purpose.
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.