Why do street lights work during a powercut?

When there was a power cut, every light in my house went out, but the street lights outside still worked. Why?

The national power supply system includes many levels. The levels of household electricity and the power of street lights are different. The street lights are powered by independent public electricity. Therefore, when there is a power cut, the street lights won’t be influenced.

More reading: What Is LED Street Light

What Others Are Asking

How bright is a 10w LED floodlight?

This is my first time buying an LED floodlight. So I am not clear about the power of the LED lights. Can you describe how bright a 10 W LED flood light is?

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