2026 TEXAS ELECTRICAL INSPECTOR
CERTIFICATION EXAM ACTUAL VERIFIED
QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE|INSTANT
DOWNLOAD
1. During a final inspection of a newly constructed commercial office
building in Texas, an electrical inspector observes that the
grounding electrode conductor has been connected only to a driven
ground rod despite the presence of structural steel effectively
grounded and a concrete-encased electrode. According to the
National Electrical Code (NEC), what is the most appropriate
inspection finding?
A. The installation is acceptable because one grounding electrode is
sufficient.
B. Only the concrete-encased electrode is required.
C. All grounding electrodes that are present must be bonded together
into a grounding electrode system.
D. Structural steel should never be used as a grounding electrode.
Answer: C. All grounding electrodes that are present must be
bonded together into a grounding electrode system.
Rationale: NEC Article 250 requires that all grounding electrodes
present at a building or structure be bonded together to form a
grounding electrode system. An inspector should verify that concrete-
encased electrodes (Ufer grounds), structural steel, ground rods, metal
underground water piping, and other qualifying electrodes are
interconnected rather than selectively used.
1
, 2. During a rough-in inspection, an inspector finds NM cable
installed in a commercial office building. Which statement is
correct?
A. NM cable is acceptable in all commercial occupancies.
B. NM cable is permitted only above suspended ceilings.
C. NM cable is generally prohibited in most commercial occupancies
requiring noncombustible construction.
D. NM cable is preferred over MC cable in commercial buildings.
Answer: C. NM cable is generally prohibited in most commercial
occupancies requiring noncombustible construction.
Rationale: NM cable is primarily intended for residential and certain
wood-frame construction. Most commercial occupancies require wiring
methods such as EMT, rigid conduit, IMC, or MC cable depending on
construction type and occupancy classification.
3. What is the primary purpose of bonding non-current-carrying
metal parts of electrical equipment?
A. Increase voltage.
B. Improve equipment efficiency.
C. Provide a low-impedance fault current path.
D. Prevent electromagnetic interference.
Answer: C. Provide a low-impedance fault current path.
Rationale: Bonding ensures fault current has an effective return path to
facilitate rapid operation of overcurrent protective devices, minimizing
shock hazards and fire risks.
4. A panelboard directory lists several breakers simply as "Lights"
and "Outlets." What should the inspector determine?
2
,A. The directory is acceptable.
B. The directory is acceptable if typed.
C. Circuit identification must clearly describe the specific purpose or
location served.
D. Labels are optional.
Answer: C. Circuit identification must clearly describe the specific
purpose or location served.
Rationale: NEC requires every circuit to be legibly identified with
sufficient detail to distinguish its purpose. Generic descriptions fail to
provide meaningful identification during emergencies or maintenance.
5. An inspector observes flexible metal conduit supporting a lighting
fixture weighing 90 pounds. Is this acceptable?
A. Yes.
B. Yes, if less than 100 pounds.
C. No, flexible conduit is generally not intended to support luminaires
unless specifically permitted.
D. Yes, if grounded.
Answer: C. No, flexible conduit is generally not intended to support
luminaires unless specifically permitted.
Rationale: Raceways are generally intended to protect conductors, not
support equipment beyond specific limitations established by the NEC
and manufacturer instructions.
6. Which NEC article governs branch circuits?
A. Article 110
B. Article 210
3
, C. Article 250
D. Article 300
Answer: B. Article 210
Rationale: Article 210 establishes requirements for branch circuits,
including receptacle spacing, GFCI protection, AFCI protection, and
required outlets.
7. A service disconnect enclosure contains grounded (neutral)
conductors and equipment grounding conductors terminated on the
same bar. What should the inspector conclude?
A. This is prohibited everywhere.
B. It is acceptable only at the service disconnect where bonding occurs.
C. It is never acceptable.
D. It is allowed only for residential buildings.
Answer: B. It is acceptable only at the service disconnect where
bonding occurs.
Rationale: The main bonding jumper connects the grounded conductor
and equipment grounding conductors only at the service disconnecting
means.
8. Which inspection objective best describes verification of conductor
ampacity?
A. Verify wire color.
B. Ensure conductor insulation matches paint color.
C. Confirm conductors are capable of carrying the calculated load
without overheating.
D. Confirm conduit is painted.
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CERTIFICATION EXAM ACTUAL VERIFIED
QUESTIONS WITH ANSWERS
COMPREHENSIVE & RATIONALE|INSTANT
DOWNLOAD
1. During a final inspection of a newly constructed commercial office
building in Texas, an electrical inspector observes that the
grounding electrode conductor has been connected only to a driven
ground rod despite the presence of structural steel effectively
grounded and a concrete-encased electrode. According to the
National Electrical Code (NEC), what is the most appropriate
inspection finding?
A. The installation is acceptable because one grounding electrode is
sufficient.
B. Only the concrete-encased electrode is required.
C. All grounding electrodes that are present must be bonded together
into a grounding electrode system.
D. Structural steel should never be used as a grounding electrode.
Answer: C. All grounding electrodes that are present must be
bonded together into a grounding electrode system.
Rationale: NEC Article 250 requires that all grounding electrodes
present at a building or structure be bonded together to form a
grounding electrode system. An inspector should verify that concrete-
encased electrodes (Ufer grounds), structural steel, ground rods, metal
underground water piping, and other qualifying electrodes are
interconnected rather than selectively used.
1
, 2. During a rough-in inspection, an inspector finds NM cable
installed in a commercial office building. Which statement is
correct?
A. NM cable is acceptable in all commercial occupancies.
B. NM cable is permitted only above suspended ceilings.
C. NM cable is generally prohibited in most commercial occupancies
requiring noncombustible construction.
D. NM cable is preferred over MC cable in commercial buildings.
Answer: C. NM cable is generally prohibited in most commercial
occupancies requiring noncombustible construction.
Rationale: NM cable is primarily intended for residential and certain
wood-frame construction. Most commercial occupancies require wiring
methods such as EMT, rigid conduit, IMC, or MC cable depending on
construction type and occupancy classification.
3. What is the primary purpose of bonding non-current-carrying
metal parts of electrical equipment?
A. Increase voltage.
B. Improve equipment efficiency.
C. Provide a low-impedance fault current path.
D. Prevent electromagnetic interference.
Answer: C. Provide a low-impedance fault current path.
Rationale: Bonding ensures fault current has an effective return path to
facilitate rapid operation of overcurrent protective devices, minimizing
shock hazards and fire risks.
4. A panelboard directory lists several breakers simply as "Lights"
and "Outlets." What should the inspector determine?
2
,A. The directory is acceptable.
B. The directory is acceptable if typed.
C. Circuit identification must clearly describe the specific purpose or
location served.
D. Labels are optional.
Answer: C. Circuit identification must clearly describe the specific
purpose or location served.
Rationale: NEC requires every circuit to be legibly identified with
sufficient detail to distinguish its purpose. Generic descriptions fail to
provide meaningful identification during emergencies or maintenance.
5. An inspector observes flexible metal conduit supporting a lighting
fixture weighing 90 pounds. Is this acceptable?
A. Yes.
B. Yes, if less than 100 pounds.
C. No, flexible conduit is generally not intended to support luminaires
unless specifically permitted.
D. Yes, if grounded.
Answer: C. No, flexible conduit is generally not intended to support
luminaires unless specifically permitted.
Rationale: Raceways are generally intended to protect conductors, not
support equipment beyond specific limitations established by the NEC
and manufacturer instructions.
6. Which NEC article governs branch circuits?
A. Article 110
B. Article 210
3
, C. Article 250
D. Article 300
Answer: B. Article 210
Rationale: Article 210 establishes requirements for branch circuits,
including receptacle spacing, GFCI protection, AFCI protection, and
required outlets.
7. A service disconnect enclosure contains grounded (neutral)
conductors and equipment grounding conductors terminated on the
same bar. What should the inspector conclude?
A. This is prohibited everywhere.
B. It is acceptable only at the service disconnect where bonding occurs.
C. It is never acceptable.
D. It is allowed only for residential buildings.
Answer: B. It is acceptable only at the service disconnect where
bonding occurs.
Rationale: The main bonding jumper connects the grounded conductor
and equipment grounding conductors only at the service disconnecting
means.
8. Which inspection objective best describes verification of conductor
ampacity?
A. Verify wire color.
B. Ensure conductor insulation matches paint color.
C. Confirm conductors are capable of carrying the calculated load
without overheating.
D. Confirm conduit is painted.
4
