Why is the HPS street light so dim?

Sometimes I see very dim HPS street lights. Are they going to break down?
  • Getting old: After being used for a long time, the HPS street lights will get dark and need to be replaced.
  • Just being turned on: HPS street lights need time to start working. When they are just turned on, they are dim.
  • If the capacitor goes bad, the light will be dim.
  • Leakage of Na will also make the lamp look dark.

More reading: How Many Lumens Do I Need for Outdoor Lighting?

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