NWSA Electrical Safety and Grounding 1

Question 1

What is the minimum safe approach distance for unqualified workers near energized overhead power lines rated up to 50kV?

Accepted Answer

10 feet

Answer

3 feet

Answer

15 feet

Answer

20 feet

Question 2

Which OSHA construction standard specifically covers general electrical safety requirements for construction workers?

Accepted Answer

1926.416

Answer

1910.147

Answer

1910.269

Answer

1926.503

Question 3

What color identifies the equipment grounding conductor in standard US electrical wiring?

Accepted Answer

Green or bare copper

Answer

White or gray

Answer

Black

Answer

Red

Question 4

GFCI protection on construction sites is required for which type of power?

Accepted Answer

Temporary power distribution and portable electric tools

Answer

All permanent wiring only

Answer

Only 240-volt circuits

Answer

Fixed interior receptacles only

Question 5

The primary purpose of electrically bonding two metallic tower components together is to:

Accepted Answer

Equalize electrical potential and prevent arcing or shock

Answer

Increase RF signal strength

Answer

Reduce metal corrosion over time

Answer

Improve structural load capacity

Question 6

Static electricity buildup on a tower structure poses which primary hazard to workers?

Accepted Answer

Shock or ignition of flammable materials upon discharge

Answer

Accelerated corrosion of structural bolts

Answer

Degradation of RF signal quality

Answer

Long-term structural fatigue