E27 (ES) LED GLS Bulb 14W 1521lm Non-Dimmable - Warm White 3000K

This is a GLS bulb, the familiar household pear shape, with an E27 screw cap and LED inside. It draws 14W and gives 1,521 lumens, which the pack puts against a 100W replacement, making it one of the brighter bulbs you can screw into an ordinary lampholder. The light is warm white at 3,000K: soft and slightly creamy, a long way from the blue-white of a daylight lamp. The opal casing spreads the light rather than concentrating it, and the 180 degree beam angle throws it forward and sideways much as a traditional bulb does.

E27, also written ES or Edison screw, is the larger of the two screw caps in common UK use; if the old bulb turns in on a coarse thread around 27mm across, this is the right one. It suits pendants, standard lamps, table lamps and wall lights where you want broad, even light rather than a directed beam, and 1,521 lumens is enough to light a kitchen, hallway or living room from a single fitting. Since the casing is opal rather than clear, it also sits comfortably under an open shade.

Dimming is not supported: the specification records it as non-dimmable, so put it on a plain switch and leave dimmer circuits to a lamp rated for them. The energy label gives class F at 14 kWh per 1,000 hours, and the pack states a life of up to 10 years and 86% less energy than the bulb it replaces. The rating is IP20, which means dry indoor fittings only. Each box holds a single bulb and the minimum order is 12, sold in multiples of 12. Other JCB LED bulbs on sale here include candle, golf and GLS shapes with B15, B22 and E14 caps, in warm white, cool white and daylight.

How do I know if my lamp takes an E27 cap?

Look at the old bulb. An E27 or ES cap is a screw thread roughly 27mm across, the larger of the two screw sizes used in the UK; the smaller one, about 14mm, is E14 or SES and will not fit here.

How bright is 1,521 lumens in a room?

It is bright for a single household bulb, which is why the pack puts it against a 100W replacement. One of these in a ceiling pendant will light an average kitchen or hallway without needing a second lamp.

Can I put it on a dimmer switch?

No. The specification records this bulb as non-dimmable, so use it with a standard on and off switch. On a dimmer you may get flicker, buzzing or a shortened life from the bulb.

What does warm white 3,000K actually look like?

It is a soft, gently creamy white that flatters wood, paint and fabric. It reads slightly crisper than the old 2,700K incandescent glow and much warmer than 4,000K cool white or 6,500K daylight.

How many bulbs will I receive?

Each box contains one bulb. The minimum order on this listing is 12 boxes, sold in multiples of 12, so a single purchase brings you twelve individual bulbs.

Where should I avoid fitting it?

The IP20 rating covers dry indoor fittings only, so keep it out of unheated outbuildings, exposed porches and any position where it could be reached by water or driven rain.