You are inspecting a renovation project where the existing electrical wiring is being replaced. Which type of wiring method is not permitted in concealed spaces according to the 2024 IRC?
- Nonmetallic sheathed cable (NM)
- BRigid metal conduit (RMC)
- CArmored cable (AC)
- DFlexible metal conduit (FMC)
Exam tip
Be aware of the specific wiring methods permitted in concealed spaces to ensure compliance with the code.
Why A is correct
According to Section 330.30 of the 2024 IRC, nonmetallic sheathed cable (NM) is not permitted in concealed spaces where the cable is subject to physical damage. RMC, AC, and FMC are all permitted in such conditions.