NCCER Practice Exam PT9

The maximum size solid wire that should be terminated in pull boxes and disconnects is ____.

• No. 6

• No. 10

• No. 8

• No. 12

The ampacity ratings of conductors can be found in ____.

• NEC Chapter 1

• NEC Chapter 9

• NEC Articles 348 through 352

• NEC Tables 310.16 through 310.21

To determine the ampacity of copper conductors where they are used as a single conductor in free air at ambient temperatures of 86°F (30°C), use ____.

• NEC Table 310.16

• NEC Table 310.19

• NEC Table 310.18

• NEC Table 310.17

Compact stranding is used ____.

• when installing larger conduit sizes

• with aluminum conductors

• in corrosive environments

• when decreasing the ampacity of an existing service

PE is used primarily for ____.

• insulation of control and communications wiring

• the manufacture of TW and THW insulation

• high-voltage cables

• high-temperature insulation

Type USE cable can be used for ____.

• underground installation including direct burial

• aboveground installation only

• indoor applications only

• underground installation within a special PVC pipeline

What letter must be included in the marking of a conductor if it is to be used in a wet, outdoor application?

• O

• I

• D

• W

When used as a service-entrance cable, Type SE cable must be installed as specified in ______.

• NEC Article 230

• NEC Section 210.5(C)

• NEC Section 110.12

• NEC Section 402.3

A type of thermoset insulation is ______.

• THW

• RHW

• PVC

• THHW

What service conductor may be bare, green, or green with a yellow stripe?

• The neutral conductor of a multiconductor cable

• The ungrounded conductor of a multiconductor cable

• The high leg of a four-wire, delta-connected secondary

• The equipment grounding conductor of a multiconductor cable