How To Figure Amps On Led Lights

Led power supplies for strip lighting led flexible strip power supply.

How to figure amps on led lights.

To determine how many amps your strips are drawing you ll need to find their wattage so let s use a really easy example. For example a 100 watt bulb in a 12 volt system will draw 8 3 amps. A typical cheap 60 watt equivalent to incandescent led light bulb is advertised as providing 800 lumens lasting up to 10 000. That sounds a lot more difficult than it really is.

Example is an led 24 volt globe light that pulls 8 watts which draw 0 333333 amps. V led is the voltage drop across the led measured in volts v i led is the current through the led measured in amperes amps a and r is the resistance measured in ohms ω. Use the charts to figure out which led strip light power supply you need. 7 easy steps to finding your correct power supply.

To figure out the color code you basically break down the first two digits of the resistor value use the third digit to multiply the first two by and then assign the fourth digit as an indicator of tolerance. Make sure you plan led downlight spacing according to suggested lighting layout. Don t want to read the whole article. Depends on the size of the led light and the voltage applied.

For example to find number of led lights in showroom or shop select room type as showroom or shops. Take an led 120 volt light bulb draws 12 watts and. The current through the circuit is constant so iled is also the current through the resistor. To calculate an led s power use simply multiply the led s voltage in volts by the led s current in amperes.

Divide the total number of watts by the system s volts. We have illustrated number of led lights required for your room type with different options of our various led lighting products in table form. A regular density 3528 led light strip draws twenty four watts now take the wattage and divide it by twelve that s your amp draw or two amps. Which power supply do i need.

100w 12v 8 3a. For example if your led has a voltage of 3 6 and a current of 20 milliamperes it will use 72 milliwatts of power. Use the key below to see which power supply you will need.