Module 8

The purpose of a sealing fitting is to _____.

• carry wires through conduit and other types of raceways

• bundle wires and cables together

• connect conduit to boxes

• minimize the passage of gases, vapors, and flames through a conduit

The type of anchor shown in the figure above is a _____.

• drop-in anchor

• drive-in anchor

• toggle bolt

• self-drilling anchor

NEC Article 344 provides the requirements for _____.

• PVC

• EMT

• IMC

• RMC

One characteristic of aluminum conduit is that it _____.

• requires more maintenance

• is too thin to be threaded

• does not require supplementary corrosion protection when used in concrete

• is more resistant to wet environments

A type of conduit that has a wall thickness less than that of RMC but thicker than EMT is

_____.

• PVC

• HDPE

• IMC

• LFNC

The voltage drop of conductors carrying alternating current in PVC will be less than that of

identical conductors in _____.

• steel conduit

• plastic conduit

• LFNC

• HDPE

A type of fitting used to prevent damage to PVC caused by temperature changes is a(n)

_____.

• combination coupling

  b

• flex connector

• hinged coupling

• expansion coupling

To act as a moisture seal, an outer covering of liquidtight, sunlight-resistant flexible material

is placed around _____.

• flexible nonmetallic conduit

• flexible metal conduit

• high-density polyethylene conduit

• rigid polyvinyl chloride conduit

A type of conduit body with a 90° connector and the cover on the left is a _____.

• Type LL

• Type LB

• Type LR

• Type LT

EMT is _____.

• steel conduit coated with a black enamel

• conduit that is constructed of metal thick enough to permit the cutting of pipe threads at

  each end

• often referred to as thinwall conduit and too thin to be threaded

• conduit that has been given a thin coating of PVC