On the packaging it is usually on the back written something like this.
Led tube light watts per hour.
140 watts 2 x4 3 lamp 178 watts 2 x4 4 lamp 158 watts 8 2 lamp 178 watts 8 4 4 lamps by using the averages we are able to get a good comparison against newer technologies with lower fixture wattages.
That s 88 lumens of light per watt of power the led draws.
Step 5 multiply your quantity of fixtures by the wattage of your existing fixture.
The old 40 20watt with 38mm dia called t12 lamp 36 18watt with 26mm dia.
Lumens are the overall light output or quantity of light produced and a watt of course is a unit of power that is used to measure the power consumption of a lamp.
An average led light bulb that outputs the equivalent of the 60w incandescent fixture uses roughly 8 9 watts.
This ismainly available in 3 diameters.
If you operate your lighting for 4 320 hours per year 12 hours per day 360 days per year the 100w par38 would use 432 kwh per year and the 14w led par38 would use just over 60 kwh per year.
In this case the utility would pay a rebate based on the 372 kwh of energy consumption saved over the course of the year from the more efficient lighting.
The efficiency of leds and other light sources is measured in lumens per watt and this can often be found on the packaging of led light bulbs.
Upgrading five light bulbs to leds using 9 watts of electricity would likely cost 1 30 to power for the month vs.
You want to calculate your 60 watt light bulb energy use and cost per hour.
Divide by 1 000 to get 06 kwh.
60 watts multiplied by one hour is 60 watt hours of energy.
This depends on the type of tube light.
Click calculate to find out the electricity cost of a single led light bulb running at 10 watts for 5 hours a day 0 10 per kwh you can also modify the input fields if needed.
89 watts 2 x2 u shape lamp.
06 kwh multiplied by 12 cents is 0072 cents.
Simply the more lumens you can get from a watt the more efficient the lamp is at doing its job.
Because fluorescent lights are often installed in high ceilings in commercial sites there are additional savings because the frequency of changing bulbs is greatly reduced.
Designed to replace fluorescent tube bulbs these led tubes are available in 8 and 16 watts which replace traditional 25 watt and 40 watt t8 t10 t12 fluorescent tubes.
What ever the rating is stamped on it.
So how much does it cost to run a 60 watt light bulb for 1 hour.
The 8 70 of the incandescent lamps.
That s a significant cost savings.
How many watts does a normal tube light use.
A little more than 7 10ths of a penny at this rate.
A typical cheap 60 watt equivalent to incandescent led light bulb is advertised as providing 800 lumens lasting up to 10 000 hours at 10 watts.