Practice question

What is the typical restrike time for an HPS lamp after it has been turned off?

  1. Instantaneous
  2. 1-2 minutes for hot restrike with special ignitor; 5-15 minutes for standard restrike
  3. 1 hour
  4. 24 hours

Answer: B — 1-2 minutes for hot restrike with special ignitor; 5-15 minutes for standard restrike

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