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Question #25single-choiceverified

UL94-V0 rating cannot be granted if…

  1. Dripping of burning specimens including ignition of cotton batting Correct
  2. First flame application time = 10s, first burning time = 5s, second flame application time = 10s, second burning time = 9s
  3. First flame application time = 10s, first burning time = 9s, second flame application time = 10s, second burning time = 8s, the total burning time of all 10 flame applications in the set did not exceed 45s
  4. Flame height = 21 mm
  5. Combustion up to 25mm before the holding clamp

Official answer

Dripping of burning specimens including ignition of cotton batting

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  • FSA 2019 · ev · quiz 3
  • FSA 2019 · cv · quiz 4