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.
Journeyman Electrician’s Exam Journeyman Electrician's Raceway Systems 1
Which NEC article governs the installation of Electrical Metallic Tubing (EMT)?