March 12, 2021 TRALERT®
Watt led werklamp

Wattage LED werklampen

What does 'Watt' stand for and why is it of value in work lights?

Watt, Voltage and Ampere. All kinds of terms you have to deal with when it comes to light and energy. Because there is much talk about wattage within lighting, we would like to briefly explain what this stands for. We also look at whether wattage or voltage really says something about the intensity or power of a worklight.

Wattage, Ampere and Voltage, what are the differences and what do these terms mean?

When it comes to a work lamp, we can imagine that you will notice a few aspects. For example, you often see in the title how many volts a lamp supports or what power the lamp provides expressed in 'Wattage'. Therefore, we briefly explain both concepts.

Watt (W)

As in many cases, Watt is also named after a person. This person is the Scottish engineer James Watt. 'Watt' or 'wattage' is the unit of measurement to measure the electrical power of in your case, the work lamp. This is different from, say, horsepower, which is also a unit of power. Horsepower is a fairly old way of measuring power. Also, horsepower is not geared to electronic devices. Wattage (W) therefore refers to the power of your LED worklight. However, this does not necessarily mean that the worklight enjoys a higher light output. Things like: reflector technology and lens use also play a major role.

Examples where wattage recurs:

  • An LED work light has an output of 48W. This is the power of all the LEDs combined.
  • Your combination microwave oven has a 900W power stop, which allows the microwave oven to heat your food at 900W.

As a rule, you can use the following formula to express one watt; 1W = 1V * 1A | 1v= 1 volt, 1A = 1 ampere. Now of course, just as with centimeters, there are larger and smaller units. In the table below you will find an overview. However, this applies to lighting to a lesser extent.

Larger/smaller units
factor name symbol
10−6 microwatt μW
10−3 milliwatt mW
1 watt W
103 kilowatt kW
106 megawatt MW
109 gigawatt GW
1012 terawatt TW
1015 petawatt PW

Ampère (A)

As with Wattage, Ampere is also named after a scholar. As you can probably guess the name, the inventor of the unit of measurement Ampère is the French gentleman: André-Marie Ampère.  André is one of the main discoverers of electromagnetism and Ampère still has a major role today. A definition of this unit of measurement reads:

The ampere is the unit of current, just as the meter is the unit of length. The definition of the ampere is based on a special physical phenomenon: around a live wire there is a magnetic field. The stronger the current, the stronger the magnetic field. Two parallel current wires therefore attract each other magnetically. If two cables of the same kind are connected to the same power source, and they attract each other with the right force, then one ampere flows through each of them (Essent, s.d.).

Voltage (V)

The voltage, in short, is the voltage that runs through the vehicle. Within vehicles, this is primarily a 12 volt voltage or a 24 volt voltage. The volt is defined as the potential difference across a conductor when a current of 1 ampere converts a power of 1 watt into heat in it. The unit is also equal to 1 joule per coulomb. With TRALERT®, you don't have to worry about voltage within your vehicle. Our lights are primarily multivoltage equipped which makes them support both 12v and 24v with no light loss.

So is the listed power directly equivalent to the power of the work light?

No, not directly. It is obviously true that the more watts, the more power the lamp contains. However, as previously mentioned, there are more factors that influence the light intensity and light range. For example, a work light may contain an average of lower Watts per LED, but feature a powerful reflector lens. An example of this is the TRSW12275FB within our range. This lamp has a low wattage value and an average number of lumens. However, this worklight offers, by means of an RFT lens, a more powerful, better distributed light beam than other models which are equipped with more Watts. As advice we would like to give you not to be blinded by Watts or Lumens. Lamps and light are there to be compared and the best place to do that is in our showroom. This space is specially designed to demonstrate these differences.

Featured product

TRE303P0403: LED Worklight 48 Watt

2850 lumens in a relatively small housing
Equipped with a Deutsch connector
IP68 (Waterproof)
Compact and bright light image

The high quality LEDs give a bright light image and a good light distribution. The lamp is equipped with a robust housing, the 16 LEDs produce heat and this is dissipated by the cooling ribs on the rear of the housing. This ensures a long life compared to competing lamps with a flatter housing.

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LED werklamp 48w watt