How Many Amps For 5m Led Strip

So you need a led power supply sometimes referred to as a led driver that can deliver at least 119 watts.

How many amps for 5m led strip. Determine the length of led strip you will connect to a single power supply step 2. As a rule of thumb most small leds are rated at 20 ma and groups of 3 are connected in series plus a series resistor to 12v. Let s say you are using 8 5m of led strip. Step by step information on how to calculate power supply requirements.

To find the total maximum current draw per meter we would multiply 60ma x 10 ten segments per meter for the 30 led per meter strip 0 6 amps per meter or 60ma x 20 twenty segments per meter for the 60 led per meter strip 1 2 amps per meter. Step 3 check how many watts per foot your led strip will consume. The result measured in watts is the amount of power your leds use. The led strip has a power consumption of 14w m.

You can typically find this information listed on the product page or. So approximately power dissipation for n leds power v x i 12v x 20 ma x n 3 80 x n mw. Each strip consumes a certain amount of power per foot watts ft. This step is very important to determine how large of a power supply you will need.

The manufacturer or supplier should specify current per length of strip. Anatomy of an led strip. However it is recommended that you make allowances for unintentional overloads. If you do not have enough power to light your strips they may appear dim flicker or not light up at all.

For example if your led has a voltage of 3 6 and a current of 20 milliamperes it will use 72 milliwatts of power. For example i have a wall wart that converts 110 120vac to 12vdc that is marked for 5 amps. 14 x 8 5 119 watts in total. The controller s max input is 5 amps so do i use a 3 amp 4 amp or 5 amp supply.

The item description says to use a 5 amp supply but just want to be safe. I don t want to overload the circuit and create problems but without knowing how many amps per foot the led strip draws i m reluctant to make an installation. To calculate an led s power use simply multiply the led s voltage in volts by the led s current in amperes. There are 300 leds on the strip.

If you have the led strip on full white all leds lit that would be 60ma per segment. They can be cut to specific lengths using just a pair of scissors along the cutlines located every 1 2 inches. I m uncertain that i m even asking the right questions.