Antique Lighting Bulbs | Charles Edwards


From bulb shape to colour temperature and lumens view this page to have your electrification questions answered.

View our other electrification pages Electrification, Custom Electrification and Flex.

Are light bulbs included with my order?

We supply dimmable LED bulbs for all UK and European orders, as well as to countries with equivalent 220-240V voltage, such as Australia, some Middle Eastern and Caribbean countries.

No bulbs are supplied for USA and Canadian orders due to the added costs of export.

Suggested bulb stockists include Tala, Zico, Segula, Philips, and Osram.

Are Charles Edwards fixtures dimmable?

All our fixtures are mains voltage and dimmable if used with a dimmable bulb.

Are Charles Edwards fittings compatible with LUTRON, or DALI, 1-10V; 0-10V or DSI controller?

Yes. To connect our fittings with a Lutron or Dali controller you need to add an interface not supplied by Charles Edwards. Check with your controller supplier about a suitable Mains voltage interface.

One of the bulbs doesn’t switch on, or is flickering. What shall I do?

All our fixtures are fully tested and certified before dispatch. If a bulb doesn’t switch on first check to see if the bulb is loose. Fixing a loose bulb is as easy it sounds: just tighten it. We recommend that you wear cotton gloves, or use a piece of paper towel as the natural oils from your fingers can reduce the lifespan of the bulb.

Conventional light bulbs screw into the lamps. Once they’re fully tightened, the bulb’s receiver connects with the lamp’s power supply securely. To tighten your bulb, simply turn the bulb clockwise in its socket. Make sure you let the bulb cool down before you touch it.

You should also be careful not to apply too much force to the bulb’s glass. Don’t try to force the tightening.

Since the introduction of the led retrofittable bulb we have noticed small variation in the base of bulbs that may have distorted the connection of the bulb with its power. Try using a bulb from a different bulb manufacturer and check if the problem is resolved.

If you continue to experience the same flickering issue, remove power from circuit. Unplug the bulb. Gently squeeze the prongs with a screwdriver in order to tighten the prongs grip with the bulb. Firmly re-seating the bulb into the socket to see if this fixes the  problem.

What should I look for when choosing or replacing a light bulb?

Bulb shape

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.

IP44 fitting

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

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 +).

Picture Lights

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.

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