EETC Electrical Safety & Code Compliance 3

Question 1

Which NFPA 70E category of arc flash PPE requires a minimum arc rating of 40 cal/cm²?

Accepted Answer

PPE Category 4

Answer

NFPA 70E PPE Category 4 requires a minimum arc rating of 40 cal/cm², the highest standard category for arc flash protection.

Question 2

An electrical worker is injured by an arc flash. The incident energy at the working distance was 8 cal/cm². Which PPE category was MINIMALLY required?

Accepted Answer

PPE Category 2 (8 cal/cm²)

Answer

NFPA 70E PPE Category 2 covers incident energy up to 8 cal/cm², so Category 2 PPE would minimally satisfy this scenario.

Question 3

What color is assigned to the high-voltage warning label per ANSI Z535 standards?

Accepted Answer

Orange

Answer

ANSI Z535 assigns orange to warning signs indicating hazardous conditions (including high voltage) that could cause serious injury.

Question 4

The NEC defines a 'qualified person' for electrical work as someone who:

Accepted Answer

Has training and experience on electrical equipment and hazards

Answer

NEC Article 100 defines a qualified person as one with skills and knowledge of construction/operation of equipment and the hazards involved.

Question 5

Which type of grounding electrode is considered the MOST effective per NEC 250.52?

Accepted Answer

Concrete-encased electrode (Ufer ground)

Answer

The concrete-encased electrode (Ufer ground) provides the most reliable low-impedance earth connection due to contact with moist concrete.

(EETC) Electrical Technician Certification Practice Test

(EETC) Electrical Technician Certification Practice Test

EETC Electrical Safety & Code Compliance 3