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In an industrial facility, what is the minimum spacing required between cable trays for proper ventilation?

Texas Master exam practice question · Wiring Methods & Materials

In an industrial facility, what is the minimum spacing required between cable trays for proper ventilation?

  • A6 inches
  • 12 inches
  • C18 inches
  • D24 inches

Exam tip

Always ensure proper ventilation in cable tray installations to prevent overheating.

Why B is correct

According to the 2026 NEC Article 318.104(B), the minimum spacing required between cable trays for proper ventilation is 12 inches. The other options are incorrect as they do not meet the code requirements.

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