Fluorescent Lamps
LED Fluorescent Lamps
LED Fluorescent Lamps is a group of 12 IMPA-coded items (codes 791473–791486) under Fluorescent Lamps in the Electrical Equipment section (IMPA 79). All of them are priced per piece. The list runs through 2 metric sizes from 26×580 mm to 28×588.7 mm.
Buying guide
LED fluorescent lamps are LED tubes made to the shape of a linear fluorescent tube so that they fit the existing lamp holders. The group lists 10 W and 20 W tubes 26 mm in diameter and 580 or 1198 mm long, and 8 W and 17 W tubes 28 mm by 588.7 or 1198 mm, in cool white or daylight, for 100–245 V or 200–240 V supplies.
The electrical officer raises them to replace failed fluorescent tubes in accommodation and machinery-space fittings, or as part of a change-over to LED. How the fitting is wired decides which tube will work, so this is the line of a requisition most often got wrong.[2]
How to specify it
State length, diameter, wattage, supply voltage and colour as in the IMPA description, and say how the fitting is or will be wired. UL defines three kinds: Type A runs on the existing fluorescent ballast with no rewiring; Type B has the ballast cut out and the lamp holders wired straight to the supply; Type C uses a separate external driver.[2]
If the fitting still has its ballast, ask the supplier to confirm the tube is compatible with that ballast model. If fittings are being converted, order one type for the whole ship: a Type A tube put in a fitting rewired for Type B gets full line voltage, and arcing, shock or a bursting tube can follow.[2]
Rules and certificates
IEC 62776 sets the safety and interchangeability requirements for double-capped LED lamps with G5 and G13 caps made to replace fluorescent lamps with the same caps, up to 125 W and 250 V, designed to fit without internal modification of the luminaire, which may have electromagnetic or electronic control gear. It does not cover conversion lamps that need the luminaire modified, and it is written for general lighting service, excluding for example explosive atmospheres.[1]
Where a fitting has been rewired for Type B tubes, the US DOE guidance is that the installer labels every fitting to say it has been modified and must not be relamped with a fluorescent or Type A tube.[2]
Questions buyers ask
- Can I just put an LED tube in place of the fluorescent tube?
- Only a Type A tube that is compatible with the fitting’s ballast. Type B and C tubes need the fitting rewired, and that fitting should then carry a label saying so.
- Can LED retrofit tubes go in hazardous-area light fittings?
- Not on the strength of IEC 62776: that standard is for general lighting service and excludes explosive atmospheres. Hazardous areas need the certified fitting and the lamp its maker approves.
Sources
Published by Sherif Awad, founder of GeoMarineHub — in ship supply since 1990, a family business since 1981 (45 years). Last checked .
At a glance
Part of Electrical Equipment (IMPA section 79): Lamps, cable, switches, fuses, batteries, connectors, marine lighting fittings and meters.
It is one of 12 groups under Fluorescent Lamps; the others include Ballasts for Fluorescent Lamp, Compact Fluorescent Light Bulbs, Energy Saving Lamp, Fluorescent Lamp Holders, Fluorescent Lamps and 6 more.
Post the ones you need as a requirement and verified suppliers activated at your port bid on them — sealed, so nobody sees another bid.
- Items
- 12
- IMPA codes
- 791473–791486
- Priced
- per piece
- Sizes
- 26×580 mm – 28×588.7 mm
Items
Also under Fluorescent Lamps
Most requested sections