Name two common types of electrical conduit used for outdoor or wet locations and a key property of each.

• A. PVC conduit (non-conductive, corrosion resistant); EMT (thin-walled metal, easy to bend and install).
• B. Steel conduit (conductive, strong) and Flexible plastic conduit (rigid and difficult to bend).
• C. Fiber conduit (non-conductive) and Glass conduit (fragile).
• D. Galvanized conduit (metal) and Ceramic conduit (incompatible with moisture).

Answer: (D)

When conduit is placed outdoors or in wet locations, the main idea is to pick a type that protects the conductors from moisture and physical damage while staying practical to install. Two common choices are PVC conduit and galvanized steel conduit.

PVC conduit is non-conductive and highly resistant to moisture and corrosion, which makes it a safe and convenient option for wet environments. It’s lightweight, easy to cut and assemble, and resists the elements well, though it won’t provide the same level of mechanical protection as metal in every situation.

Galvanized steel conduit, on the other hand, is metal and has a zinc coating that guards against rust, offering excellent mechanical protection for outdoor runs. It’s conductive, so grounding and bonding practices must account for that.

Other materials listed are not typical for outdoor or wet locations due to practicality or limited moisture resistance, which is why PVC and galvanized conduit are the standard pair for these conditions.