Many people are not sure how many amps for 5m led strip. The best method is to use a multimeter or voltmeter and measure the volts. A good rule of thumb for calculating amps is: the longer the led strip, the higher the amps, because long led strips to have more voltage across them. I put this blog together to help anyone who wants to find out how many amps for 5m led strip or anything else for that matter.
Table of Contents
How many amps for 5m led strip?
Normally, there are two LEDs in one meter. Each led has 0.5-0.8W power consumption, then the total power consumption is 5 x 0.5W = 2.5W. The best current for the led strip is 1.2A for 5m, and it is not enough for 5m 30LEDs, so you had better divide the strip into several smaller strips. If you use 5m 30LEDS strip, use a 1A power supply.
The number of amps is the max current that the strip can handle. For example, if you want to run the strip at 7 volts and its max. current is 10 amps then you do the math: 7 volts x 10 amps = 70 watts, which is the max. you can pull from a standard US household 120v wall outlet. It may not be advisable to pull that power from one outlet.
Types of LEDs
There are two main types of LEDs, SMD and “Through Hole” LEDs. SMD LEDs are usually used for more complex led applications. These are the types of LEDs that have wires on the back. Through-hole LEDs have their legs sticking out the side. 5m is a very long run of LEDs.
It would probably be best to put the LEDs in a “string” of some sort. By using a string you will eliminate the need for individual power supply for each led because strings have their own integrated power supply. This will make the project easier and more cost-efficient.
How many amps do I need for the LED strip?
Generally speaking, the recommended current to drive an LED strip is 0.5A per meter. However, if the drive current can be adjusted, it will be better to set the drive current at 0.2A – 0.5A, which is the best current for the strip to emit the brightest light. The reason is that when the current is too high, the LEDs will be burnt easily.
The power of your LEDs will depend on their voltage and current. Higher voltage means brighter light. Higher current means more brightness with the same voltage. So if you have a 12 volt LED, a 9 volt LED will appear brighter. An 18 volt LED will have a brighter light, and so on.
If you’ve determined the voltage of your LEDs, you should then calculate your current using Ohm’s Law, which states that voltage, current, and resistance are related by Ohm’s Law, where v=voltage R=resistance, and I=current. The amount of current flowing through the LEDs will depend on your LEDs, the power supply and the wire used.
How do you power a 20m LED strip?
If the voltage is 12V, then the power consumption would be 12V * 0.05A = 0.6W (0.6W is if it’s running at full brightness, 0W is if it’s off). So the power supply should be able to provide at least 0.6W. However, it’s always good to go higher.
LED strips are usually powered by a 5v to 12v DC power supply. When connected to a PSU, the output voltage is regulated to either 5v or 12v, depending on the product. Some strips have a transformer inside to convert 110v to 5v or 12v AC. These kinds of products are suitable for powering the strips directly from 110v to 12v DC. There are 5v and 12v DC power supply devices available in the market.
Some of the devices come with switches to select between 5v, 6v, and 9v. Generally, the 5v and 12v products are targeted to specific product requirements. If a 5v to 12v DC power supply is not available, we can use a 5v to 12v AC to DC adapter. The adapter has a step-down transformer and regulators to provide a stable and low ripple output voltage. The voltage output from the power adapter is unregulated, so we need to use a DC voltage regulator to control the output voltage.
How do you calculate power for LED strip lights?
LED strip lights and LED tubes to use the same power calculation method: 0.85W/led x LEDs/meter x length of each strip (or tube). For example, let’s say we have a 25 feet 12V 30 LED/M strip light, we can calculate power with the formula below: 0.85W/led x 30 LEDs/meter x 25 feet = 400 watts. Note: 1 meter = 39.37 inches.
There are two ways to calculate the wattage:
- Divide the voltage by the resistance, and then multiply the result by the number of feet you are going to buy.
- Just divide the voltage by the resistance, and then multiply the result by the number of feet you are going to buy. A 100 foot, 5VDC/per foot is 5 watts per foot. If you buy 3-foot sections each containing 3 LEDs, you’ll have 9 LEDs total. The voltage is 5 volts, and the resistance is 5 ohms. So you’ll have 1.80 watts of power per foot. In order to figure out how many feet you need, you can multiply the number of LEDs * by the voltage. You’ll need 12 * 5 Ohms = 60 ohms of power. So you’ll have a continuous load of 5.4 amps total or 1.8 amps per foot.
How many amps does a 12v led strip use?
A 12v led strip uses a 1 amp per meter. To calculate the total power consumption, multiply the length of the strip by the amp/meter. So if you have 2 meters, the total power consumption would be 2 amps.
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