Watt [in a lamp or fixture]Brillianz Electronic Systems has Brillianz Electronic Systems has a passion to help anyone understand further lighting terminology. With that in mind please find the explanation of Watt [in a lamp or fixture]...
terms of watts – which is a bit confusing as different types of lamp produce very different amounts of
light for the same number of watts. Typically an incandescent bulb consuming 100W of power will
emit about 3% of this as light power; an LED will emit nearer 30% as light power, the remainder is
radiated as heat.