A new outdoor sign is being installed on the side of a building. The sign requires a 120/240 V, single-phase circuit. The electrician needs to run conduit from a weatherproof disconnect switch to the sign itself, a distance of 10 m (33 ft). Which type of conduit is explicitly permitted by the CEC for use in wet outdoor locations and provides protection against physical damage?

Question: A new outdoor sign is being installed on the side of a building. The sign requires a 120/240 V, single-phase circuit. The electrician needs to run conduit from a weatherproof disconnect switch to the sign itself, a distance of 10 m (33 ft). Which type of conduit is explicitly permitted by the CEC for use in wet outdoor locations and provides protection against physical damage?

Answer options:

• Electrical Metallic Tubing (EMT)
• Flexible Metal Conduit (FMC)
• Rigid PVC Conduit, Type DB2 ✅ Rigid Metal Conduit (RMC)

Correct answer: Rigid Metal Conduit (RMC)

Explanation: Rigid Metal Conduit (RMC) is suitable for all atmospheric conditions and provides excellent mechanical protection, making it ideal for outdoor applications and protection against physical damage. EMT and FMC are generally not permitted in wet locations unless listed for such use, and often require specific fittings. PVC Type DB2 is 'direct burial' conduit, typically for underground, and while PVC conduit (Type EB1/DB2) can be used outdoors, RMC offers superior physical protection for an exposed sign installation.