Code, Standards, and Practices 1, Based on the 2020 NEC Online Materials: Lesson 9 General Requirements Related to Installing Industrial Wiring Devices

Question 1

Wire mesh grips provide ? and absorb ? .
Select one:

a.stress / leverage

b.support / stress

c.vibration / pull

d.weight / pull

Answer 1

support / stress

Question 2

Strain relief grips differ from support grips in that they have ? attachments that are easily attached to a junction box or panel.
Select one:

a.bushing

b.fitting

c.locknut

d.union

Answer 2

fitting

Question 3

Mechanically interlocked receptacles allow for the safe connection of power to permanently installed electrical equipment.
Select one:
True
False

Answer 3

False

Question 4

What method of overload protection for equipment at the source of power access is employed within selected Pass & Seymour Legrand switches and interlocked receptacles?

Select one:

a.Circuit breakers

b.Emergency stop button

c.Fusing

d.Overload relay

Answer 4

Fusing

Question 5

The UL 508 listing on non-fusible safety switches allows these products to be used for ? .
Select one:

a.the avoidance of machine downtime due to the integral blown fuse indication function

b.the overload protection of portable equipment at the source of power access

c.the purpose of a manual motor controller that can be additionally used as a disconnect switch

Answer 5

the purpose of a manual motor controller that can be additionally used as a disconnect switch

Question 6

The IEC 309 clocking system prevents the mating of plugs and receptacles of different ? and ? ratings.
Select one:

a.current / resistance

b.current / voltage

c.impedance / resistance

d.impedance / voltage

Answer 6

current / voltage

Question 7

The acronym IEC stands for ? .
Select one:

a. Industrial Electrical Contractor

b. Instrumentation Engineering Consultant

c. International Electrotechnical Commission

d. International Electrical Committee

Answer 7

International Electrotechnical Commission

Question 8

The IEC 309 clocking system dictates that the ground contact position for all female connectors and receptacles is based upon a clock face, with the keyway always being located at ? .
Select one:

a. 12:00

b. 3:00

c. 6:00

d. 9:00

Answer 8

6:00

Question 9

Locking plugs and connectors are used in applications where ? is a primary concern.
Select one:

a. assured/consistent connections

b. child safety

c. environmental conditions

d. high voltage

Answer 9

assured/consistent connections

Question 10

Straight blade plugs and connectors come in what two primary amperage ratings?
Select one:

a. 15 A and 20 A

b. 16 A and 29 A

c. 100 A and 125 A

d. White and ivory

Answer 10

15 A and 20 A

Question 11

What should be done before preparing to install an industrial wiring device?
Select one:

a. Meet the lockout/tagout requirements of OSHA and NFPA 70E

b. Remove all the light bulbs

c. Strip the wire

d. Tighten the terminal screws of the device

Answer 11

Meet the lockout/tagout requirements of OSHA and NFPA 70E

Question 12

Which of the following describes a wiring device utilizing blades that when inserted into a receptacle establishes a connection between the conductors of the attached flexible cord and the conductors connected to the receptacle?
Select one:

a. Connector

b. IEC

c. Plug

d. Receptacle

Answer 12

Plug

Question 13

Common elements in the construction of an industrial wiring device include ? .
Select one:

a.assembly screws

b. back body

c. cord grip

d. terminals

e.all of the above

Answer 13

All of the above

Question 14

Watertight plugs and connectors are designed for ? environments.
Select one:

a. cold and exposed
`
b. dry and hot

c. dusty and splashproof

d. wet and damp

Answer 14

wet and damp