How to calculate the power of LED strips

How To Calculate The Power Consumption Of Your LED Strips?

Learning how to calculate the power consumption of your LED strips is very important. This is related to the stability and safety of the entire system and the lifespan of the light strip. Another important factor is that if you know the power of the LED strips, you can choose the correct output LED power supply. Today let us check how to calculate it.

When you browse the details of the online store or purchase them from your local LED shop, they will show the power consumption or include it in the packing bag. see the pictures below:

Knowing the power consumption of each meter makes it easy to calculate the power consumption for the roll of LED strips. The formula is Wattage = wattage/meter * LED strips’ length.

For example, if the power of the LED strips is 8W/M and you own one roll of 5 meters of LED strips, the power composition of the roll of LED strips is 40W. If you want to use 5-roll LED strips for your project, the total power consumption is 200W.

After we know how to calculate power, we can learn to choose the correct LED power supply. Because the power supply contains many components, this will cause power loss in the power supply itself, so you cannot assume that the actual output of the power supply is the same as the wattage indicated on the power supply. There is a very important parameter that helps us choose a suitable power supply: power efficiency. See the picture below:

They are 1500W output Meanwell power supplies. For the 24V products, the power efficiency is 90%, so the actual output is 1500W*90%=1350W. You can use the same method to calculate the actual output power of the power supplies.

Conclusion: Calculating the light strip’s power consumption is necessary to select the appropriate power supply, controller, and other accessories. Now you have know how to do it, choose the correct ones for your new lighting project now.

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