How Many Amps Does 300 Watt Led Light Bar Draw

Equivalent wattage and amperage values at 12 volts.

How many amps does 300 watt led light bar draw.

The result measured in watts is the amount of power your leds use. Add up the wattage of everything plugged into the circuit and divide by the circuit s voltage to determine the total amperage draw on the circuit. 3 cheap led s can have low mtbf from poor heatsink designs. Older led chips found in older generation led bulbs from as recent as 2008 2010 produce less light per watt than the 2011 2012 led chips found in more modern led bulbs.

For example if your led has a voltage of 3 6 and a current of 20 milliamperes it will use 72 milliwatts of power. When dave connects incandescent bulbs to an amp meter they draw up to 1 6 amps but when led lights are used they only pull about 26 amps. An example is an led 24 volt globe light that pulls 8 watts which draw 0 333333 amps. Take an led 120 volt light bulb draws 12 watts.

If the light is operating at 110 volts and p i x e then i 300 110 or 2 5 amps. For example a 2012 7w bulb with a cree xt e chip can produce more light or lumen output than a 12w bulb with an older cree xp e chip. If your led lights bars draw a total of 1500 watts then i suggest a 150 amp fuse. When determining how many lights can be run on a circuit it is important to also account for all other electrical appliances plugged into the same circuit.

The difference is significant especially for rvers who do a lot of dry camping. This video takes you step by step to quantify the amp draw of the two kinds of lights. 1500w 12v 125 amps but you should add a bit of a buffer about 20 more so a 150 amp fuse is perfect.