Question 1

What is the maximum ambient temperature rating for PVC conduit (Schedule 40) used in direct burial applications?

Accepted Answer

PVC conduit is rated for use where the ambient temperature does not exceed 50°C (122°F). Above this temperature, a higher-rated conduit type must be used.

Question 2

What type of conduit is identified by the trade name 'Greenfield' and consists of a flexible metal spiral without a jacket?

Accepted Answer

Flexible Metal Conduit (FMC) is the conduit commonly called 'Greenfield.' It is a raceway of circular cross section made of a helically wound, formed, interlocked metal strip.

Question 3

Which conduit type has the thickest wall and is permitted as an equipment grounding conductor without a separate ground wire?

Accepted Answer

Rigid Metal Conduit (RMC) has the thickest wall of all metal conduits and is listed as an equipment grounding conductor when properly bonded.

Question 4

Electrical Metallic Tubing (EMT) is NOT permitted in which specific hazardous condition?

Accepted Answer

EMT is not permitted where it will be subject to severe physical damage, in cinder fill, or where protected from corrosion solely by enamel. It is also not permitted in hazardous (classified) locations except as specifically permitted by NEC Articles 500–516.

Question 5

What distinguishes Liquidtight Flexible Nonmetallic Conduit (LFNC) from Liquidtight Flexible Metal Conduit (LFMC)?

Accepted Answer

LFNC is a listed raceway of circular cross section with a smooth seamless or corrugated inner surface and a liquid-tight jacket, but without a metal armor layer. LFMC has an outer liquid-tight jacket over a spiral metal core.

Wiring Methods – Electrician Journeyman Exam Flashcards

Study Modes

Practice Test

Study Guide

Try These Cards

Want to keep studying?

Related Study Decks

Circuit Calculations – Electrician Journeyman Exam

Electrical Safety – Electrician Journeyman Exam

Electrician Journeyman Exam — Complete Bundle

Grounding & Bonding – Electrician Journeyman Exam

Load & Demand – Electrician Journeyman Exam Flashcards

Motors & Controls – Electrician Journeyman Exam

Unlock the Full Electrician Journeyman Exam Study Bundle