Licensed Electrical Contractor FREE Licensed Electrical Contractor Safety and OSHA Regulations Questions and Answers 2 — Questions and Answers
Question 1: What is the minimum approach distance for a qualified electrical worker near exposed energized parts operating at 750V to 15kV?
- 1 foot (Correct answer)
- 2 feet
- 3 feet
- 5 feet
Correct answer: 1 foot
OSHA 29 CFR 1910.333(c) establishes a minimum approach distance of 1 foot for qualified persons working near exposed energized conductors rated 750V to 15kV.
Question 2: Under OSHA regulations, which of the following is required before performing maintenance on electrical equipment?
- Lockout/tagout procedures must be implemented (Correct answer)
- A verbal warning to nearby workers is sufficient
- Only the circuit breaker needs to be turned off
- A safety meeting must be held within 24 hours
Correct answer: Lockout/tagout procedures must be implemented
OSHA 29 CFR 1910.147 requires the implementation of lockout/tagout (LOTO) procedures to ensure equipment is de-energized and cannot be restarted during maintenance.
Question 3: What color is used to identify safety ground wires in electrical installations per NEC requirements?
- Green or green with yellow stripes (Correct answer)
- White or gray
- Red
- Blue
Correct answer: Green or green with yellow stripes
The NEC requires equipment grounding conductors to be identified by green, green with one or more yellow stripes, or bare copper.
Question 4: According to OSHA, at what voltage level must electrical protective gloves be tested before each use?
- Any voltage above 50V (Correct answer)
- Any voltage above 120V
- Any voltage above 240V
- Any voltage above 600V
Correct answer: Any voltage above 50V
OSHA requires insulating gloves to be used and tested when working on or near energized parts operating above 50 volts to protect against electrical shock.
Question 5: What does OSHA require employers to provide when employees work in confined spaces with potential electrical hazards?
- A written permit-required confined space program (Correct answer)
- Only a flashlight and rubber gloves
- Verbal instructions from the supervisor
- Access to a first aid kit nearby
Correct answer: A written permit-required confined space program
OSHA 29 CFR 1910.146 requires employers to develop and implement a written permit-required confined space program when employees must enter confined spaces with recognized hazards.
Question 6: Which OSHA standard specifically addresses electrical safety requirements for construction sites?
- 29 CFR 1926 Subpart K (Correct answer)
- 29 CFR 1910 Subpart S
- 29 CFR 1926 Subpart M
- 29 CFR 1910 Subpart Z
Correct answer: 29 CFR 1926 Subpart K
OSHA 29 CFR 1926 Subpart K specifically covers electrical safety requirements for construction work, including installation, maintenance, and environmental considerations.
Licensed Electrical Contractor FREE Licensed Electrical Contractor Safety and OSHA Regulations Questions and Answers 2
What is the minimum approach distance for a qualified electrical worker near exposed energized parts operating at 750V to 15kV?