NETA Safety Standards & Regulatory Compliance 2

Question 1

According to NFPA 70E, what is the minimum arc flash boundary for a 480V system with an incident energy of 8 cal/cm²?

Accepted Answer

The distance where incident energy equals 1.2 cal/cm²

Answer

The arc flash boundary is defined as the distance at which incident energy equals 1.2 cal/cm², the onset of a second-degree burn threshold.

Question 2

Under OSHA 29 CFR 1910.269, what minimum approach distance applies to qualified electrical workers working on energized conductors at 15 kV phase-to-phase?

Accepted Answer

2 feet 2 inches

Answer

OSHA 1910.269 Table R-6 specifies a minimum approach distance of 2 feet 2 inches for phase-to-phase voltages between 15.1 kV and 17.5 kV.

Question 3

Which NETA standard specifically governs acceptance testing procedures for new electrical equipment installations?

Accepted Answer

ANSI/NETA ATS

Answer

ANSI/NETA ATS (Acceptance Testing Specifications) covers testing and commissioning of new electrical equipment and installations.

Question 4

When performing insulation resistance testing, NETA standards require that test results be corrected to which standard temperature?

Accepted Answer

25°C

Answer

NETA standards require insulation resistance test results to be temperature-corrected to a standard reference temperature of 20°C (68°F).

Question 5

Under NFPA 70E, which PPE category is required when the incident energy is determined to be 12 cal/cm²?

Accepted Answer

PPE Category 3

Answer

PPE Category 3 covers incident energy levels from 12 to 40 cal/cm² and requires a minimum arc rating of 25 cal/cm² for clothing.

(NETA) InterNational Electrical Testing Association Certified Technicians Practice Test

(NETA) InterNational Electrical Testing Association Certified Technicians Practice Test

NETA Safety Standards & Regulatory Compliance 2