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Electrician Red Seal · Question

An electrician is installing a new underground feeder (UF) cable for outdoor lighting in a residential backyard. The cable will be direct buried. What is the minimum depth of burial required for UF cable not subject to vehicle traffic?

CEC Rule 12-012(1)(a) specifies that underground cables not subject to vehicular traffic, including UF type, shall be installed at a minimum depth of 300 mm (12

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Question: An electrician is installing a new underground feeder (UF) cable for outdoor lighting in a residential backyard. The cable will be direct buried. What is the minimum depth of burial required for UF cable not subject to vehicle traffic?

Answer options: ✅ 300 mm (12 in)

  • 400 mm (16 in)
  • 450 mm (18 in)
  • 600 mm (24 in)

Correct answer: 300 mm (12 in)

Explanation: CEC Rule 12-012(1)(a) specifies that underground cables not subject to vehicular traffic, including UF type, shall be installed at a minimum depth of 300 mm (12 in). This depth provides adequate protection against casual digging and surface disturbances. Other depths are typically specified for areas with vehicle traffic or higher voltage installations.

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