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Why do some street lights go off randomly and then turn back on?

It is really strange that there are always some of the street lights going off, and every time not the same one. Why does this happen?

Street Light
October 11, 2023

Jacob Jones

Bachelor's degrees in electronic engineering. Skilled in designing LED electronic components, products, and systems, developing and testing prototypes, troubleshooting, and debugging. 8+ years of extensive experience in the electrical and electronic manufacturing industry. Reach Me Now>>

Jacob Jones

It is a problem that will probably happen to the HPS street lights. The reasons include:

After the bulb works for a long time, the working voltage will gradually increase. When it exceeds the upper limit of the allowable value, the light can work as normal when the power supply voltage is normal and has no fluctuations. If the power supply voltage fluctuates and suddenly decreases even slightly, the bulb will immediately go out. When the power supply voltage returns to normal and the bulb cools to a certain extent, the light will turn on again.
For aging light bulbs, even if the power supply voltage is normal and has no fluctuations, the light bulb will frequently go out.
When there are problems with the connections in the circuit, the light bulb will flicker on and off.

More reading: LED Street Lights VS HPS Street Lights: What’s Better in 2023?

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