CCI CCI Electrical Systems Inspection 3

Question 1

Which of the following best describes arc-fault circuit interrupters (AFCIs) and where they are required?

Accepted Answer

AFCI breakers are required in most living areas of new residential construction per NEC

Answer

AFCI protection is only required in kitchens and bathrooms

Answer

AFCIs are optional but encouraged in bedrooms only

Answer

AFCI requirements apply only to commercial construction

Question 2

During electrical rough-in inspection, what is the minimum box fill volume required for a single 12 AWG conductor entering a box?

Accepted Answer

2.25 cubic inches

Answer

1.5 cubic inches

Answer

3.0 cubic inches

Answer

2.0 cubic inches

Question 3

What is the inspection criterion for determining if a neutral conductor is properly sized for a feeder?

Accepted Answer

The neutral must be sized to carry the maximum unbalanced load from the line conductors

Answer

The neutral must always match the phase conductor size

Answer

The neutral can be one size smaller than phase conductors regardless of load

Answer

Neutral sizing is not a required inspection item

Question 4

When should a construction inspector require an electrical permit and inspection for temporary power during construction?

Accepted Answer

Temporary power installations always require a permit and inspection like permanent installations

Answer

Temporary power under 200 amps is exempt from permits

Answer

Permits are only required if temporary power will be used longer than 90 days

Answer

Temporary construction power never requires inspection

Question 5

What is the primary concern an inspector should have when observing aluminum wiring connections at outlets and switches?

Accepted Answer

Aluminum wire requires CO/ALR rated devices to prevent loose connections due to thermal expansion differences

Answer

Aluminum wire cannot be used in residential construction under any circumstances

Answer

Aluminum wiring connections require no special devices if torqued correctly

Answer

Only the main panel connections need CO/ALR rated devices with aluminum wire

Question 6

When inspecting a commercial electrical installation, what document must be available on-site to verify equipment is listed and labeled?

Accepted Answer

Product listing from a nationally recognized testing laboratory (NRTL) such as UL or ETL

Answer

Manufacturer's marketing literature

Answer

Installer's certification of compliance

Answer

The project architect's approval letter