Practice question

What is the maximum normal AC line-input voltage range a properly fused NEMA cabinet's signal bus is designed to operate within?

  1. 75 to 95 VAC
  2. Approximately 95 to 135 VAC nominal 120 V service
  3. 180 to 220 VAC
  4. 200 to 250 VAC

Answer: B — Approximately 95 to 135 VAC nominal 120 V service

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