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50 Led Light Bar Amp Draw. An upcoming project requires 20 ft of 120 volt led rope light. Therefore, the power of the led light is proportional to voltage and/or current such that a device may have a low voltage but may still draw a very high current and have high power consumption.
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You can also use this information to purchase the following items that can handle the correct current for your led light bar. 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. As a result, you could end up overheating the switch, melting the wires, and reducing.
50" inch 288W Spot / Flood Combo CREE Curved LED Light Bar
If you are calculating the amperage of the leds themselves, it would be the voltage and current through the individual leds. To find the total maximum draw per meter, we would multiply 60ma x 10 (30 segments per meter for 30 segments / led per meter strip) = 0.6 amps per meter or 60ma x 20 (twenty blocks per meter for 60 / led per meter) ) meter strip) = 1.2 amps per meter. So if it was plugged in to 120 vac in the us, it would be 120 / 120 = 1 amp. At 14v, 100w will draw about 7.14 amps (and your 7.5a fuse might not blow).
