CEA Wiring Methods & Installation Practices

Question 1

What is the primary purpose of conduit in electrical wiring?

Accepted Answer

To protect wires from physical damage

Answer

To generate electricity

Answer

To insulate wires from current

Answer

To convert AC to DC

Question 2

Which wiring method is commonly used in residential homes?

Accepted Answer

Non-metallic sheathed cable (NM cable)

Answer

Rigid metal conduit only

Answer

Overhead bus bars

Answer

Direct burial cable only

Question 3

What is the maximum number of conductors allowed in a standard electrical box?

Accepted Answer

Depends on box size and conductor gauge

Answer

No more than 2 conductors

Answer

Exactly 10 conductors

Answer

No limit on conductors

Question 4

Which color is typically used for grounding conductors?

Accepted Answer

Green or bare copper

Answer

Black

Answer

White

Answer

Red

Question 5

What tool is used to strip insulation from electrical wires?

Accepted Answer

Wire stripper

Answer

Pliers

Answer

Screwdriver

Answer

Hammer

Question 6

What is the purpose of a junction box?

Accepted Answer

To safely enclose wire splices

Answer

To increase voltage

Answer

To ground the circuit

Answer

To hold switches only

Question 7

What is the typical voltage rating for residential branch circuits?

Accepted Answer

120/240 volts

Answer

480 volts

Answer

12 volts

Answer

600 volts

Question 8

Which wiring method is most suitable for outdoor applications?

Accepted Answer

UF cable (Underground Feeder)

Answer

NM cable

Answer

Indoor flexible cable

Answer

Telephone cable

Question 9

What is the National Electrical Code (NEC)?

Accepted Answer

A set of safety standards for electrical installations

Answer

A manual for mechanical engineering

Answer

A guide to plumbing codes

Answer

A set of electrical appliance warranties