Eveready Fluorescent Tube G13 914mm 30W Non-Dimmable - Daylight 6500K

This is a 3ft linear fluorescent tube, 914mm long, running at 30W and giving 2230 lumens at 6500K. The cap is G13, the bi-pin fitting used on every T8 tube, and T8 itself names the diameter: eight eighths of an inch, or 26mm across the glass. The coating is triphosphor, the phosphor blend that gives fluorescent tubes their stronger colour rendering than older halophosphate types. The glass carries the printed code F30 T8/865, in which F30 is the wattage and the final three digits are the colour code used across the fluorescent trade.

Daylight at 6500K is the coldest, bluest white in common use, and it suits places where you want to see clearly rather than settle in: a garage, a workshop, a garden room, a utility area or a stockroom. If you are swapping a tube in a fitting that already holds a 3ft lamp, measure the glass rather than the housing, because a batten is always longer than the tube inside it. Where several battens share one space, keeping every tube on the same colour code avoids the patchy mix of warm and cold light that shows badly on a white wall.

There is no dimming: the specification gives Dimmable as No, so this belongs on a plain on/off circuit or a switched sensor rather than a dimmer plate. The rating is IP20, protection against solid objects only and none against water. The energy label gives class G and 30kWh per 1000 hours of use. Each unit is one tube, and the minimum order is 25, sold in multiples of 25, which suits a fit-out or a maintenance stock rather than a single swap.

Will this fit my existing 3ft batten?

It has a G13 bi-pin cap and measures 914mm, so it drops into a standard 3ft T8 batten. Check that the old tube is 26mm across the glass and not a wider T12.

What do the markings F30 T8/865 on the glass mean?

F30 gives the 30W rating and T8 the 26mm diameter. In the three digit colour code the first digit refers to the colour rendering band and the last two to the colour temperature in hundreds of kelvin.

Can I run this tube on a dimmer?

No. The specification gives Dimmable as No, so wire it to a plain switch, a timer or a movement sensor rather than a dimmer plate.

How much light does 2230 lumens actually give?

That figure is the lamp's own output, so a fitting with a diffuser or a reflector will put less of it into the room. For a wide floor, plan on more than one batten.

Is an equivalent wattage given for this tube?

No equivalent figure is stated by the manufacturer. Compare tubes on lumens instead: this one is rated at 2230 lumens for 30W of draw.

Do I receive one tube, and what is the minimum order?

Each unit is a single tube. The minimum order is 25 units, sold in multiples of 25, which suits maintenance stock or a whole site rather than one swap.