I live in my braai room aka man cave.
12v led home lighting system.
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.
With 12v systems the lower voltage means more current must be supplied to compensate.
In a 24v led system there is typically enough voltage overhead to allow for 7 leds in series per string.
During winter this light is used roughly 3 hours at night and another 1 hour in the morning.
The current draw is thus.
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The 12v lights here draws another 5a h per winter night.
Led lights are a popular way of saving money in the home.
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This draws 1 4a at 12v.
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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.
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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.
Why does the amperage matter.
They last for many hours and a gently used light can last up to 25 years.
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3 disadvantages of a 12v led system 1.
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