What is the MAXIMUM length of continuous conduit allowed before a pull point or pull box needs to be installed?

Question

Options

• A15.20 m (50 ft)
• B22.90 m (75 ft)
• C30.50 m (100 ft)
• D45.70 m (150 ft)

• A
  4% (1)
• B
  4% (1)
• C
  85% (23)
• D
  7% (2)

Explanation

Option C (30.50 m / 100 ft) is correct because the Canadian Electrical Code (CEC), Rule 12-1012, specifies that a pull box or pull point must be installed whenever a conduit run exceeds 30 m (100 ft) in a straight section, ensuring conductors can be pulled without excessive friction or damage. Options A (15.20 m / 50 ft) and B (22.90 m / 75 ft) are too short - while they represent reasonable conduit segments in practice, neither is the code-specified threshold, and using them as the limit would require unnecessary extra boxes. Option D (45.70 m / 150 ft) exceeds the allowable limit and would make wire pulling physically difficult, risking conductor insulation damage. A helpful memory trick: think "100 feet = a pull box, please" - the round number 100 ft (one football field length) makes the limit easy to anchor in your mind, and anything beyond that needs a break point for safe wire installation.

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