NCCER Ch. 8 Review

The lightest duty and most widely used non-flexible metal conduit is

• electrical metallic tubing

• rigid metal conduit

• aluminum conduit

• plastic-coated RMC

Which of the following is often referred to as thinwall conduit?

• IMC

• EMT

• RMC

• Galvanized rigid steel conduit

NEC Article 358 covers

• RMC

• IMC

• EMT

• ENT

In order to resist corrosion in wet environments, EMT is

RMC is made of

• cast iron

• steel or aluminum

• copper or aluminum

• PVC

A type of conduit that should be used where corrosion is a factor is

• PVC

• black enamel steel conduit

• IMC

• RMC

Which of the following is true with regard to PVC?

• It can be used as an equipment grounding conductor.

• It increases the voltage drop of the conductors.

• It requires the use of expansion joints to avoid damage due to temperature changes.

• It must be threaded.

Type II PVC conduit is also known as

• DB

• HDPE

• LENC

• EB

A type of conduit used to connect machines that vibrate during operation is

• aluminum

• black enamel steel conduit

• flexible metal conduit

• RMC

Which of the following is an acceptable combination of conduit bends between pull points?

• four 90-degree bends

• three 90-degree bends and three 45-degree bends

• six 45-degree bends and two 90-degree bends

• eight 30-degree bends and two 90-degree bends