Among common conduit options, which is nonmetallic?

Among common conduit options, which is nonmetallic?

• A. EMT
• B. Schedule 80 PVC
• C. RMC
• D. LFMC

Answer: (B)

Nonmetallic conduit is made from plastic and does not conduct electricity. Schedule 80 PVC is a rigid nonmetallic conduit made from PVC plastic, and it’s designed for outdoor or demanding locations with higher impact resistance (the 80 indicates thicker wall). Because it doesn’t conduct, it cannot serve as a grounding path, so a separate equipment grounding conductor must be run. The other options are all metal—EMT is thin-walled metal tubing, rigid metal conduit is heavy-wall metal, and liquidtight flexible metal conduit is a flexible metal option—so Schedule 80 PVC is the nonmetallic choice.

Nonmetallic conduit is made from plastic and does not conduct electricity. Schedule 80 PVC is a rigid nonmetallic conduit made from PVC plastic, and it’s designed for outdoor or demanding locations with higher impact resistance (the 80 indicates thicker wall). Because it doesn’t conduct, it cannot serve as a grounding path, so a separate equipment grounding conductor must be run. The other options are all metal—EMT is thin-walled metal tubing, rigid metal conduit is heavy-wall metal, and liquidtight flexible metal conduit is a flexible metal option—so Schedule 80 PVC is the nonmetallic choice.