When bending rigid metal conduit (RMC) for installation, what is the minimum bend radius required?

Texas Master exam practice question · Wiring Methods & Materials

When bending rigid metal conduit (RMC) for installation, what is the minimum bend radius required?

A1.5 times the conduit diameter
B2 times the conduit diameter
3 times the conduit diameter
D4 times the conduit diameter

Exam tip

Always check the minimum bend radius requirements for different types of conduits.

Why C is correct

The 2026 NEC Article 318.13 requires a minimum bend radius of 3 times the conduit diameter for RMC. The other options are incorrect as they do not meet the code requirements.

Practice 14 more Wiring Methods & Materials questions

Timed mock exams, a wrong book and flashcards — one subscription covers every contractor exam line.

Start studying free

A commercial building has a single 120/240V, 3-phase, 4-wire service. What is the minimum grounding electrode conductor size required?
A raceway is filled with 12 AWG copper conductors. What is the maximum allowable fill, according to the 2026 NEC?
A residential electrical panel has conduit filled to 80% of its capacity. The conduit is 1-inch rigid metal conduit. How many 12-gauge THHN conductors can be installed in the conduit?
A residential electrical system requires 20 AWG copper conductors for branch circuits. What is the maximum allowable fill for a 1-inch conduit, according to the 2026 NEC?
A residential home requires arc-fault circuit interrupters (AFCIs) to be installed in all bedroom circuits. What is the correct location for the AFCI device?
A school district is installing new electrical raceways in a classroom. The raceway is 1-inch PVC conduit. What is the maximum number of 14-gauge THHN conductors that can be installed in the conduit?

When bending rigid metal conduit (RMC) for installation, what is the minimum bend radius required?

When bending rigid metal conduit (RMC) for installation, what is the minimum bend radius required?

More Wiring Methods & Materials questions