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Special Occupancies & Conditions — Texas Master Practice Questions

14 questions · 10% of the NEC Knowledge exam

Worked questions

1. A hospital emergency department requires a dedicated branch circuit for lighting. According to the 2026 NFPA 70 NEC, what is the minimum branch-circuit ampacity required for this application?

  • A20A
  • 30A
  • C40A
  • D50A

Exam tip

Remember that specific occupancies like emergency departments have unique requirements for electrical installations.

Why B is correct

The correct answer is 30A, as per 517.12(B)(1) of the 2026 NFPA 70 NEC, which specifies that lighting branch circuits in health care facilities, such as emergency departments, must be a minimum of 30A.

2. A hospital emergency department requires additional power for medical equipment. Which of the following requirements must be met for the emergency power system according to 2026 NFPA 70 NEC?

  • AEmergency power must be provided to all areas of the department.
  • BEmergency power must be provided to critical care areas only.
  • Emergency power must be provided to all patient care areas and corridors.
  • DEmergency power must be provided to all administrative offices.

Exam tip

Always check the specific requirements for emergency power systems in different health care facilities as they can vary.

Why C is correct

According to 2026 NFPA 70 NEC, Article 517.12(A), emergency power systems must be provided to all patient care areas and corridors in health care facilities. This ensures that critical medical equipment remains operational during power outages.

3. A manufacturing plant has a high-voltage electrical system. Which of the following requirements must be met for high-voltage installations according to 2026 NFPA 70 NEC?

  • AHigh-voltage installations must be inspected annually.
  • High-voltage installations must be installed by a qualified person.
  • CHigh-voltage installations must be grounded to the same system as the low-voltage installation.
  • DHigh-voltage installations must be equipped with a disconnecting means within sight of the high-voltage equipment.

Exam tip

Always prioritize safety when dealing with high-voltage installations.

Why B is correct

According to 2026 NFPA 70 NEC, Article 450.3(A), high-voltage installations must be installed by a qualified person. This ensures that the work is done safely and correctly.

5. A residential swimming pool has a pool pump that requires a dedicated branch circuit. The 2026 NFPA 70 NEC specifies a minimum conductor size for this application. What is the correct conductor size?

  • A10 AWG
  • 12 AWG
  • C14 AWG
  • D16 AWG

Exam tip

Ensure that you are familiar with the specific conductor requirements for different types of swimming pools.

Why B is correct

The correct answer is 12 AWG, as per 680.52(B) of the 2026 NFPA 70 NEC, which requires a minimum of 12 AWG conductor for pool pump branch circuits in residential settings.

6. A single-family home is being remodeled, and the existing electrical panel is being replaced. Which of the following requirements must be met for the new electrical panel according to 2026 NFPA 70 NEC?

  • AThe new electrical panel must be of the same type as the old one.
  • The new electrical panel must be listed and labeled by a recognized testing laboratory.
  • CThe new electrical panel must be installed by a licensed electrician.
  • DThe new electrical panel must be equipped with a ground fault circuit interrupter (GFCI) for all circuits.

Exam tip

Always use listed and labeled equipment to meet code requirements.

Why B is correct

According to 2026 NFPA 70 NEC, Article 408.3(A), the new electrical panel must be listed and labeled by a recognized testing laboratory. This ensures that the panel meets the necessary safety standards.

7. In a chemical plant, the installation of electrical equipment in a hazardous (h) location requires adherence to certain NEC provisions. According to the 2026 NFPA 70 NEC, which article covers the installation of electrical equipment in hazardous (h) locations?

  • AArticle 501
  • BArticle 502
  • CArticle 503
  • Article 505

Exam tip

Distinguish between different hazardous locations and the corresponding NEC articles.

Why D is correct

The correct answer is Article 505, as per the 2026 NFPA 70 NEC, which specifically addresses the installation of electrical equipment in hazardous (h) locations.

7 more in the bank

Answers and explanations for these are in the app.

  • A high-rise building requires a fire alarm system. Which of the following requirements must be met for the fire alarm system according to 2026 NFPA 70 NEC?
  • A high-rise office building is required to have a fire alarm system. According to the 2026 NFPA 70 NEC, what is the minimum branch-circuit ampacity required for a fire alarm system circuit?
  • A residential swimming pool requires an electrical installation. Which of the following requirements must be met for the electrical installation according to 2026 NFPA 70 NEC?
  • A school building must have a fire alarm system that meets specific requirements. According to the 2026 NFPA 70 NEC, what is the minimum branch-circuit ampacity required for a fire alarm system circuit in a school building?
  • A temporary electrical installation is being used on a construction site. Which of the following is a requirement for temporary installations according to 2026 NFPA 70 NEC?
  • In a long-term care facility, the NEC requires that all electrical outlets be readily accessible. According to the 2026 NFPA 70 NEC, what is the maximum distance between outlets in patient care areas?
  • In a manufacturing plant, the installation of electrical equipment in hazardous locations requires compliance with specific NEC provisions. According to the 2026 NFPA 70 NEC, which article covers the installation of electrical equipment in Class I, Division 2 hazardous locations?

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