Journeyman Electrician’s Exam Journeyman Electrician's Raceway Systems 1 — Questions and Answers
Question 1: Which NEC article governs the installation of Electrical Metallic Tubing (EMT)?
- Article 344
- Article 350
- Article 358 (Correct answer)
- Article 362
Correct answer: Article 358
NEC Article 358 specifically covers Electrical Metallic Tubing (EMT), including its uses permitted, uses not permitted, and installation requirements.
Question 2: Which NEC article covers Intermediate Metal Conduit (IMC)?
- Article 340
- Article 342 (Correct answer)
- Article 344
- Article 346
Correct answer: Article 342
NEC Article 342 covers Intermediate Metal Conduit (IMC), which is a medium-weight metal raceway that can be threaded in the field.
Question 3: Which NEC article governs Rigid Metal Conduit (RMC)?
- Article 342
- Article 344 (Correct answer)
- Article 346
- Article 348
Correct answer: Article 344
NEC Article 344 covers Rigid Metal Conduit (RMC), the heaviest-wall metal conduit that is field-threadable and suitable for most environments.
Question 4: Rigid PVC Conduit (Schedule 40 and Schedule 80) is governed by which NEC article?
- Article 348
- Article 350
- Article 352 (Correct answer)
- Article 356
Correct answer: Article 352
NEC Article 352 covers Rigid PVC Conduit, including both Schedule 40 and Schedule 80, and specifies where each schedule is permitted.
Question 5: Which of the following conduit types can be legally field-threaded for connections?
- EMT only
- EMT and PVC
- RMC and IMC (Correct answer)
- RMC only
Correct answer: RMC and IMC
Both Rigid Metal Conduit (RMC) and Intermediate Metal Conduit (IMC) have sufficient wall thickness to be field-threaded; EMT is too thin-walled to be threaded.
Question 6: Which NEC article covers Liquidtight Flexible Nonmetallic Conduit (LFNC)?
- Article 350
- Article 352
- Article 356 (Correct answer)
- Article 358
Correct answer: Article 356
NEC Article 356 covers Liquidtight Flexible Nonmetallic Conduit (LFNC), a flexible plastic conduit with a liquidtight jacket used in wet or outdoor locations.
Question 7: Flexible Metal Conduit (FMC) is covered under which NEC article?
- Article 344
- Article 348 (Correct answer)
- Article 350
- Article 352
Correct answer: Article 348
NEC Article 348 covers Flexible Metal Conduit (FMC), commonly called 'Greenfield' or 'flex,' used for final connections to equipment where vibration or movement is present.