During winter this light is used roughly 3 hours at night and another 1 hour in the morning.
12v led home lighting system.
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Why does the amperage matter.
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Since the resistor does not contribute to illumination we can conclude that in a 12v led strip approximately 25 of the electrical energy is dissipated as waste heat.
This draws 1 4a at 12v.
Kitchen 1 2m of 14w m high bright led strip.
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They last for many hours and a gently used light can last up to 25 years.
Most led lights are arranged so that they can run off of a 12v battery in fact 12v lights can cause a short when plugged directly into a socket which usually have 110v current.
I live in my braai room aka man cave.
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The current draw is thus.
In a 24v led system there is typically enough voltage overhead to allow for 7 leds in series per string.
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The bedrooms draw maybe another 1ah.
At 3v each the total led voltage is 21v or about 88 of the 24v input.
For example a 120v led system will pull 1 amp in a 120 watt system while a 12v led system will need to pull 10 amps to power the same 120 watt system.
3 disadvantages of a 12v led system 1.
The 12v lights here draws another 5a h per winter night.
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Led lights are a popular way of saving money in the home.