Tips for buying LED bulbs

First of all, there is no real comparison between LED bulbs and other conventional light bulbs (halogen, incandescent, compact fluo and others).

Indeed, it should be noted that not all LEDs have the same lighting power and that some of them alone can have a luminous flux equivalent to more than 500 LEDs less powerful.

The most efficient and economical light bulbs are now the LEDs, but they are not bought like a conventional incandescent bulb or even halogen. Here are some of our tips for making the right choice.

With incandescent bulbs and halogens, we speak had to deal with watts (W), since their luminous intensity depends on their power consumption. This is no longer the case with LEDs. For example, a 6W high performance LED illuminates as well as a 60W incandescent bulb or 46W halogen. The central LED information is the lumens (lm). Read more

Led replacement bulbs: potential technical and electrical risks in lighting

Replacement  LED lamps (only the lamps that are replaced and installed in the already existing luminaire) have been available on the market for some time. However, there are  potential technical and electrical risks associated with this type of substitution lamps. This type of renovation can also lead to an increase in light nuisance and discomfort to users if the necessary conditions are not met.

Note: these article deals with  functional public lighting intended to ensure the safety of the users’ travel for all types of traffic (pedestrians, cyclists, motorized vehicles) and irrespective of the duration of illumination chosen. Some ambient lighting fixtures (outdoor lighting fixtures without required photometric performances for example) are not affected.


Between 2012 and 2017, almost 80% of public lighting lamps in Europe should have been replaced according to European regulations. In Europe, many of the luminaires in service are over 25 years old and therefore present an urgency for renovation (with some  mercury vapor lamps, mostly concentrated in rural municipalities).  within the framework of the law of energy transition and the fight against light nuisance. A large number of  luminaires are still equipped with discharge lamps (SHP – metal halide) with less than 15 years of installation.

An investment not necessarily profitable

If these replacementLED lamps are cheaper to purchase, the investment expenditure , even lower, may not be amortized due to unsatisfactory performance and reliability guarantees for the safety of the users. Electrical safety, malfunctions and consequent maintenance are also questioned.

On the other hand, the guarantee of the equipment could no longer be assured by the manufacturer of the luminaire. Consequently, any breakdowns resulting from the substitution are no longer part of this guarantee and will represent an additional cost for the communities

IP protection classes: the different degrees of protection in lighting

On many occasions, lighting fixtures must stand rough conditions and work for their intended period of time nevertheless they are set out to dirt, dust and humidity. Ingress of liquid and/or solid particles into lighting equipment can not only be harmful to the equipment, it can be dangerous to the operator. Therefore when buying industrial lighting fixtures, it is essential to know what degree of “ingress protection“, also called IP class, or IP rating the product offers. IP codes stands for “ ”  and sometimes also for “International Protection Rating” IP protection classes define how and where the lights can be used without any safety risk.

The protection rating indicates also the protection for people against potential dangers when using the equipment. With regard to suitability for various environments, the systems are divided into relevant IP codes).

 These IP ratings specify the following:

  1. Protection of persons.
  2. Protection of light fixtures (and electrical equipment) against the penetration of solid matter, including dust.
  3. Protection of light fixtures against the harmful effects of water

Explanation of IP Codes

ip protection class

An IP code consists of the letters “IP” and two digits. The first digit is 0…6 and the second 0…9.

Ingress Protection Classification

First Number : Degrees of protection against the infiltration of impurities

Second Number : Degrees of protection against the damaging effects of water


Protection Provided


Protection Provided


No Protection


No Protection


Protected against solid objects up to 50mm e.g. accidental touch by hands


Protected against vertically falling drops of water e.g. condensation


Protected against solid objects up to 12mm e.g. fingers


Protected against direct sprays of water up to 15 deg from the vertical


Protected against solid objects over 2.5mm e.g. tools


Protected against direct sprays of water up to 60 deg from the vertical


Protected against solid objects over 1mm e.g. wires


Protected against water sprayed from all directions – limited ingress permitted


Protected against dust – limited ingress (no harmful deposit)


Protected against low pressure jets of water from all directions – limited ingress permitted


Protection against dust


Protected against high power water-jet streams

 7Immersion up to 1m


Protected against the effects of immersion between 15cm and 1m

 8Immersion beyond 1m


Protected against long periods of immersion under pressure

You can get more information on waterproof lights and on dustproof lights created by Airfal on the following web pages:

– IP 42 waterproof luminaires

– IP 65 waterproof light fixtures

– IP 67 waterproof light fittings

– IP68 watertight lighting