OSHA Master Electrical Contractor Practice Test

These questions are part of the practice quiz. Start practicing

• Which regulation specifies the health and sanitation requirements for drinking water?
• What personal protective equipment (PPE) is essential when working near electrical hazards?
• What is the primary feature of a Service Disconnecting Means?
• What type of personal protective equipment is required when performing electrical work?
• Which federal agency is responsible for administering OSHA regulations?
• What must be done if an electrical worker finds a damaged electrical cord?
• Materials stored inside buildings under construction shall not be placed within how many feet of any hoistway or floor openings?
• Which piece of equipment is used to provide power to multiple devices in a safe manner?
• What is the primary purpose of insulation in electrical wiring?
• What information is typically included in electrical plans?
• Do arrangements made by the prime contractor relieve them of overall responsibility for compliance with obligations addressed?
• What is the minimum illumination in foot-candles for general construction area lighting?
• What is a primary function of a ground fault interrupter?
• What type of wiring is installed in most modern residential buildings?
• What is a common indicator of a faulty electrical circuit?
• According to OSHA, what must occupants do during the operation of a platform?
• What is a recommended action if extension cords show signs of damage?
• If electrical equipment is found to be faulty, what actions should be taken?
• How frequently should extension cords be inspected for safety?
• How often should electrical equipment be inspected?
• What should be verified before using temporary power sources?
• What is required of electrical installations in hazardous locations?
• Which part of the NEC covers wiring methods and materials?
• How far should ladders be placed from electrical lines when working?
• What defines a “Competent Person” in the context of electrical safety?
• What is required before performing service on energized electrical equipment?
• How often should circuit breakers be tested?
• Which type of personal protective equipment is essential when working near electrical hazards?
• What is the primary requirement for scaffolding according to safety standards?
• What are common symptoms of electrical shock?
• What is the function of a Ground Fault Circuit Interrupter (GFCI)?
• What voltage rating should safety glasses comply with according to ANSI standards?
• What is the principle of “no load” testing?
• What hazard does ungrounded electrical equipment present?
• Guardrail systems shall be capable of withstanding, without failure, a force of at least ___ pounds applied within 2 inches of the top edge, in any outward or downward direction at any point along the top edge.
• What materials are most commonly used in overhead power construction?
• How should electrical cords be maintained?
• What is one method to prevent an accident with machinery or tools not in compliance with regulations?
• What is the primary purpose of OSHA regulations?
• What is the minimum illumination in foot-candles for general construction plants and shops?
• Which color is designated for danger signs used to warn against potential hazards?
• Which of the following is a common electrical hazard?
• What does the term “working near electrical lines” imply?
• Why is it essential to use tools rated for the electrical work being done?
• What change is recommended regarding the use of common drinking cups?
• What distinguishes a "Competent Person" from a "Qualified Person" in electrical safety?
• What defines an emergency circuit?
• Why is grounding important in electrical systems?
• How many visible broken wires are allowed in wire rope that is eight diameters in length?
• What kind of issues do the OSHA Electrical Standards address?
• How often should fire extinguishers be inspected according to safety regulations?
• Who is responsible for initiating and maintaining an accident prevention program?
• What is the function of the National Electrical Safety Code (NESC)?
• What does NFPA 70E specifically address?
• Which device is used to measure electrical current in a circuit?
• What does the NEC require for outdoor electrical installations?
• What is the primary function of the OSHA Compliance Officer?
• What safety equipment is essential when working on exposed electrical circuits?
• Wire rope on hoists shall be taken out of service when wear of more than one third of the original diameter of outside individual wires exists.
• What is the minimum illumination in foot-candles for the indoor corridors of construction areas?
• What color coding is typically used for 120/240V wiring?
• What is a visual inspection in electric work?
• What should be implemented if a worker is exposed to excessive noise in the workplace?
• What must be done to ensure proper grounding of electrical setups?
• What does the acronym PPE stand for?
• Devices that provide respiratory protection must be certified by which organization?
• What is the standard minimum working space in front of electrical equipment rated 600 volts or less?
• Traction hoists must use at least ___ hoisting ropes, and drum type hoists must use at least ___.
• What must a worker be trained in when using ladders for electrical work?
• Who is responsible for taking advantage of safety and health training programs?
• How often should electrical equipment be serviced to maintain safety standards?
• Which of the following is an example of PPE?
• What should be done if an electrical fire occurs?
• What is the purpose of arc-rated clothing?
• Who should conduct arc flash risk assessments?
• Barricades for employee protection must conform to which of the following colors?
• What is a potential consequence of failing to follow OSHA guidelines?
• Which agency is responsible for enforcing workplace safety standards in the U.S.?
• What is the typical voltage threshold that may cause electrocution?
• What precaution should be taken with wet conditions when working with electricity?
• What voltage is typically considered low voltage?
• What is a common cause of electrical fires in workplaces?
• How can you identify a ground fault condition?
• What are the colors of a caution sign?
• What must be ensured about the electrical equipment being used at the jobsite?
• What is the primary purpose of grounding in electrical systems?
• What is the general purpose of a circuit breaker?
• Which of the following is true about body belts in safety equipment?
• In electrical safety, what is a common cause of electrical fires?
• What defines "qualified personnel" in electrical work?
• When warranted, what must an employer provide to ensure adequate protection to life during fire emergencies?
• What type of service flexible cords No. 12 or larger can be repaired if spliced correctly?
• What is the required voltage for a GFCI to be effective?
• What does the acronym GFCI stand for?
• How many times the maximum load should scaffolds be capable of supporting without failure?
• If a safety belt is subjected to in-service loading, what is the requirement for its usage?
• The distance between ring buoys required by OSHA regulations shall not exceed how many feet?
• How does weather impact electrical work conducted outdoors?
• Which part of the OSHA standards details safety requirements for electrical work?
• What is the primary purpose of the National Electrical Code (NEC)?
• What is the proper feature of a first aid kit container?
• When shall safety nets be provided in workplaces?
• What is the requirement for using power tools in wet conditions?
• On construction jobsites, how many toilet seats and urinals are required per 40 workers?
• What is the ratio of toilet seats and urinals required for every 40 workers on a jobsite?
• How frequently must powder actuated tools be tested before loading to ensure safety devices are working properly?
• If the personnel hoist rope speed is 300 feet per minute, the minimum rope safety factor must be ___.
• What type of shields must be provided if welding cylinders cannot be placed far enough away from the welding operation?
• What action should be taken if a worker is injured due to electrocution?
• What must be done if utility poles are present in work areas?
• The top edge height of top guard rails on supported scaffolds manufactured or placed in service after January 1, 2000 shall be installed between ___ and ____ inches above the platform surface.
• In electrical systems, what does the term 'load' refer to?
• What is the primary purpose of OSHA regulations for electrical contractors?
• What should be the condition of electrical safety equipment before use?
• Who is responsible for requiring the wearing of appropriate personal protective equipment?
• Which of the following is essential for safe operation when working near electrical equipment?
• Are health and sanitation requirements for drinking water covered under specific regulations?
• What type of circuit illustrates the concept of Path of Least Resistance?
• According to OSHA regulations, when hazards no longer exist, accident prevention signs and symbols shall be?
• Listed, labeled or certified equipment must be installed and used according to what?
• What is the maximum generator capacity that does not need ground fault circuit interrupters, if certain conditions are met?
• What should an electrical contractor do immediately in the event of an electrical accident?
• What safety feature should portable generators have to prevent electrical hazards?
• Why is it necessary to keep electrical panels clear?
• Flexible cords should be connected to what, to prevent pull from being transmitted to joints or terminal screws?
• Which document is crucial for communicating hazards in the workplace?
• Which party can arrangements be made with to handle jobsite obligations according to OSHA standards?
• Employees engaged in site clearing shall be protected from hazards of irritant and toxic plants. A designated employee shall be suitably instructed in the first aid treatment available.
• When is it necessary to report a work-related fatality to OSHA?
• Why is grounding important in electrical systems?
• What section of the Manual of Traffic Control Devices must barricades conform to?
• What is the required minimum distance for overhead power lines?
• What does PPE stand for in the context of electrical safety?
• What are the duties of a Master Electrician according to OSHA standards?
• Employees working over or near water where the danger of drowning exists shall be provided with which of the following?
• What must be done to resist electrical shock while working?
• Who is responsible for ensuring compliance with OSHA regulations in the workplace?
• When is an arc flash assessment required?
• What is the minimum height for overhead power lines above ground according to OSHA standards?
• Which factor is NOT considered when assessing electrical contractor safety?
• What is the angle of a 15-foot deep trench in type "C" soil?
• Which standard governs scaffolding use by electrical workers?
• When is it appropriate to use a surge protector?
• When combining different levels of noise exposure, how many exposure periods should be considered together?
• Lifelines shall be secured above the point of operation to an anchorage capable of supporting a minimum dead weight of how many pounds?
• Is it true that any employer may operate a power actuated tool?
• How often must safety training be conducted according to OSHA standards?
• Under OSHA’s guidelines, who is responsible for the safety of workers?
• What is the purpose of using insulated tools when working on electrical systems?
• Which material is commonly used for electrical insulation?
• What is the function of a circuit breaker?
• According to CFR regulations, is it true that fasteners should not be driven into very hard or brittle material?
• Why is keeping electrical panels clear critical for safety?
• In the context of electrical work, what does the term “arc flash” refer to?
• Under OSHA regulations, what is the required voltage rating for non-conductive ladders?
• What is a Lockout/Tagout (LOTO) procedure?
• What are electrical workers required to do with all circuits before beginning maintenance?
• According to CFR regulations, each scaffold must support its own weight and what factor of the maximum intended load?
• Who is responsible for ensuring that electrical equipment is free from recognized hazards that could cause serious harm to employees?
• The CFR requires that when materials are dropped more than how many feet outside the exterior walls of a building, an enclosed chute be used?
• Which of the following safety signs has red as the predominating color for the upper panel; black outline on the borders; and a white lower panel for additional sign wording?
• What does the "General Duty Clause" of the OSHA Act state?
• What is the primary role of an electrical safety program?
• What is the significance of voltage drop calculations in electrical installations?
• What does lockout/tagout aim to accomplish?
• What maintenance is required for fire alarm systems according to NFPA 72?
• Which of the following defines "hazardous locations" in electrical installations?
• How do electrical fires commonly start?
• What document must be provided to employees regarding hazardous substances?
• Is it permissible for an employee to work with an environment with noise exposure of 97 dBA for 1 hour, then 100 dBA for one-half hour, then 90 dBA for 4 hours?
• Safety nets shall be permitted to be installed as close to practicable under the walking surface on which the employees are working up to 35 feet.
• What distinguishes a Class A GFCI from other types?
• Whenever employees are working over or near water, ring buoys with at least how many feet of line shall be provided?
• Which of the following is classified as a live wire?
• What does the term “lockout/tagout” refer to?
• Who must use ground fault circuit interrupters for protection on construction sites?
• What type of protective gear is mandatory for working with high voltage?
• What does PPE stand for?
• What does NFPA 70 refer to?
• When should personal protection against noise exposure be provided?
• What is the maximum permissible noise exposure hours at 97 dBA slow response?
• When should electrical inspections be conducted for compliance?
• What type of container must a first aid kit consist of?
• If an electrical contractor's employees use unsafe scaffolding set up by the general contractor, who would be cited for a violation?
• How does temperature affect electrical conductivity?
• What should be done if arc flash hazards are present?
• What is a “360-degree safety approach” in electrical work?
• What is the status of a common drinking cup for portable water?
• Every open sided floor or platform ___ feet or more above a lower level shall be guarded by a guardrail, safety net, or personal fall arrest system.
• What is the primary benefit of ensuring equipment is properly grounded?
• All materials stored in tiers must be secured to prevent what?
• What type of circuit prevents overloads in electrical systems?
• Which safety equipment is not approved by OSHA as of 1998?
• When is it mandatory to use arc flash analysis?
• What is the minimum headroom requirement for a walkway above electrical equipment?
• Which color is traditionally used to identify electrical grounding?
• How are electrical codes and standards typically updated?