OSHA - Safety Certificate Electrical Safety Standards Questions and Answers

Question 1

According to OSHA 29 CFR 1910.303(g)(2), live parts of electric equipment operating at what minimum voltage must be guarded against accidental contact?

Accepted Answer

50 volts AC or DC

Answer

120 volts AC

Answer

30 volts AC or DC

Answer

240 volts AC

Question 2

A maintenance worker is preparing to perform service on a piece of machinery. The energy isolating device is capable of being locked out. According to OSHA's Lockout/Tagout standard (29 CFR 1910.147), which of the following is the required practice?

Accepted Answer

The energy isolating device must be locked out; tagout can only be used if the device cannot be locked.

Answer

The employer can choose between using a lockout device or a tagout system.

Answer

A tagout system is sufficient if the employee is trained on its meaning.

Answer

A tagout system must be used in conjunction with a lockout device.

Question 3

On a construction site, which of the following is an acceptable method for protecting employees from ground-fault hazards when using portable electric tools and cord sets?

Accepted Answer

Implementing an Assured Equipment Grounding Conductor Program (AEGCP).

Answer

Using only double-insulated tools.

Answer

Visually inspecting all cords and tools before each use.

Answer

Requiring all employees to wear rubber-soled boots.

Question 4

A qualified electrician is running a temporary extension cord to power a piece of equipment in a general industry setting. Which of the following uses of the flexible cord is prohibited under OSHA 29 CFR 1910.305(g)?

Accepted Answer

Using the cord as a substitute for the fixed wiring of the structure.

Answer

Running the cord through a doorway, provided it is protected from damage.

Answer

Connecting the cord to a pendant for temporary lighting.

Answer

Powering a portable tool or appliance.

Question 5

A crane is operating on a construction site near an overhead power line with a voltage of 50 kV. According to OSHA 29 CFR 1926.1408, what is the absolute minimum approach distance that must be maintained from the line if it is not de-energized?

Accepted Answer

20 feet

Answer

5 feet

Answer

25 feet

Answer

15 feet

Question 6

An employer implements an Assured Equipment Grounding Conductor Program (AEGCP) on a construction site. Which of the following is a key requirement of this program?

Accepted Answer

A written description of the program must be kept at the jobsite.

Answer

All cord sets and receptacles must be tested for continuity and correct terminal connection at least every 6 months.

Answer

Only a certified electrician is permitted to conduct the required tests.

Answer

The program eliminates the need for any visual inspections of equipment.