Practice question

What is the IES LM-79 standard?

  1. A standard for pole painting
  2. The standard method for electrical and photometric testing of complete LED luminaires, measuring total lumens, efficacy, color, and power consumption
  3. A standard for underground cable testing
  4. A standard for concrete strength testing

Answer: B — The standard method for electrical and photometric testing of complete LED luminaires, measuring total lumens, efficacy, color, and power consumption

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