© BestSellerStuvia |
OHIO BOARD OF BUILDING STANDARDS | OHIO EPA
Maintenance Technician Certification
OH-MAINT — Certification Exam
Ohio Maintenance Technician
INSTITUTION Ohio Board of Building Standards | Ohio EPA
PROGRAM Maintenance Technician Certification
EXAM TITLE Ohio Maintenance Technician Examination 2026/2027 | Verified Questions
COURSE TITLE Ohio Maintenance Technician Certification
COURSE CODE OH-MAINT
ACADEMIC YEAR 2026/2027
TOTAL QUESTIONS 150 Questions
© BestSellerStuvia
Academic Year 2026/2027
OH-MAINT | 2026/2027
ACTUAL QUESTIONS
Domain 1: Electrical Systems and Safety (NEC, OSHA, LOTO, GFCI/AFCI)
Question 1. What is the primary purpose of a lockout/tagout (LOTO) procedure?
A. To prevent unexpected energization or startup of machinery during servicing
B. To increase equipment speed
C. To reduce electricity costs
D. To replace personal protective equipment
Correct Answer: A
Rationale: LOTO procedures are designed to isolate energy sources and prevent unexpected energization that could
injure workers during maintenance.
Question 2. Who is primarily responsible for applying a lockout device on equipment being serviced?
A. Any nearby employee
B. The authorized employee performing the servicing
C. Only the supervisor
D. The equipment manufacturer
Correct Answer: B
Rationale: The authorized employee who will perform the servicing is responsible for applying and removing their own
lockout device.
Question 3. A GFCI device trips when leakage current exceeds approximately how many milliamps?
A. 4–6 mA
B. 1–2 mA
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
, © BestSellerStuvia |
C. 15–20 mA
D. 30–50 mA
Correct Answer: A
Rationale: Class A GFCIs are designed to trip when ground-fault current reaches 4–6 mA, providing protection against
shock.
Question 4. In which locations does the NEC generally require GFCI protection for receptacles?
A. Only in bedrooms
B. Bathrooms, kitchens (countertop), garages, and outdoor locations
C. Only in mechanical rooms
D. Only in offices
Correct Answer: B
Rationale: NEC requires GFCI protection in areas where moisture or grounding hazards are present, including
bathrooms, kitchen countertops, garages, and outdoors.
Question 5. What type of protection is typically required for bedroom receptacles under current NEC
rules?
A. GFCI only
B. No special protection
C. AFCI (arc-fault circuit interrupter) protection
D. Only surge protection
Correct Answer: C
Rationale: AFCI protection is required for most dwelling-unit bedroom circuits to detect and interrupt dangerous arcing
faults.
Question 6. When measuring resistance with a multimeter, what must be done first?
A. Energize the circuit
B. Set the meter to amps
C. Connect the leads in series with a load
D. De-energize the circuit and verify zero voltage
Correct Answer: D
Rationale: Resistance measurements must be taken on a de-energized circuit; residual voltage can damage the meter
and produce inaccurate readings.
Question 7. An ammeter must be connected in which configuration to measure current?
A. In series with the load
B. In parallel with the load
C. Across the supply only
D. To the ground wire only
Correct Answer: A
Rationale: Current is measured by placing the ammeter in series so that the full current flows through the meter.
Question 8. What is the most common cause of a circuit breaker tripping repeatedly under normal load?
A. A breaker that is too large
B. An overloaded circuit or a short circuit/ground fault
C. Too little load on the circuit
D. A missing neutral
Correct Answer: B
Rationale: Repeated tripping under normal conditions usually indicates overload, short circuit, or ground fault that the
breaker is correctly interrupting.
Question 9. What does the term “lockout” specifically refer to in LOTO procedures?
A. Placing a warning tag only
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
, © BestSellerStuvia |
B. Turning off a light switch
C. Placing a lock on an energy-isolating device to prevent operation
D. Unplugging a cord only
Correct Answer: C
Rationale: Lockout means applying a lock to an energy-isolating device so that the equipment cannot be operated until
the lock is removed.
Question 10. Which of the following is an example of an energy-isolating device?
A. A push-button start switch
B. A indicator light
C. A thermostat
D. A circuit breaker or disconnect switch
Correct Answer: D
Rationale: Energy-isolating devices include circuit breakers, disconnect switches, valves, and similar devices that
physically prevent the transmission of energy.
Question 11. What is the purpose of a tag used in tagout procedures?
A. To provide a warning that the equipment must not be operated and to identify the person who applied it
B. To permanently disable equipment
C. To replace the need for a lock
D. To indicate the equipment is ready for use
Correct Answer: A
Rationale: A tagout device is a prominent warning device that indicates the equipment must not be operated and
identifies the authorized employee.
Question 12. When working on electrical equipment, what is the minimum approach distance
consideration based on?
A. Only the voltage rating of the equipment
B. The voltage, the type of work, and applicable OSHA/NFPA tables
C. Only the amperage
D. The color of the insulation
Correct Answer: B
Rationale: Approach boundaries are determined by voltage level and are specified in OSHA and NFPA 70E tables for
qualified workers.
Question 13. What does a megohmmeter (megger) primarily measure?
A. Current flow in amperes
B. Voltage drop only
C. Insulation resistance in megohms
D. Power factor
Correct Answer: C
Rationale: A megohmmeter applies a high DC voltage to measure the insulation resistance of wires, motors, and other
equipment.
Question 14. Which color is commonly used for the grounding conductor in U.S. electrical systems?
A. Black or red
B. White or gray
C. Blue
D. Green or green with yellow stripe
Correct Answer: D
Rationale: The equipment grounding conductor is typically green or green with a yellow stripe.
Question 15. What is the primary hazard associated with an overloaded electrical circuit?
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
, © BestSellerStuvia |
A. Overheating of conductors and potential fire
B. Increased efficiency
C. Lower voltage only
D. Improved power factor
Correct Answer: A
Rationale: Overloading causes excessive current that heats conductors, insulation, and connections, creating a fire
hazard.
Question 16. Before working inside an electrical panel, what verification step is required after de-
energizing?
A. Assume it is safe
B. Test for absence of voltage with an appropriately rated meter
C. Only look for indicator lights
D. Wait five minutes without testing
Correct Answer: B
Rationale: OSHA and NFPA 70E require verification of an electrically safe work condition by testing for the absence of
voltage.
Question 17. What is the function of a ground-fault circuit interrupter (GFCI)?
A. To protect against overloads only
B. To regulate voltage
C. To detect imbalance between hot and neutral current and interrupt the circuit when leakage occurs
D. To measure resistance
Correct Answer: C
Rationale: A GFCI continuously compares current leaving on the hot conductor with current returning on the neutral
and trips if a difference (leakage) is detected.
Question 18. Which of the following is a required element of an effective lockout/tagout program?
A. Allowing any employee to remove any lock
B. Using only tags without locks
C. Applying LOTO only during major overhauls
D. Training of authorized and affected employees and periodic inspections
Correct Answer: D
Rationale: An effective LOTO program includes documented procedures, employee training, and periodic inspections to
ensure compliance.
Question 19. What is the typical voltage of a standard U.S. residential lighting circuit?
A. 120 V
B. 12 V
C. 480 V
D. 600 V
Correct Answer: A
Rationale: Standard residential lighting and general-purpose receptacle circuits operate at 120 volts.
Question 20. When replacing a fuse, what is the most important matching characteristic?
A. Color of the fuse
B. Amperage and voltage rating equal to or greater than the original (and type as specified)
C. Length only
D. Manufacturer logo
Correct Answer: B
Rationale: Replacement fuses must match the voltage rating and the amperage (or time-current characteristics)
specified for the circuit.
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
OHIO BOARD OF BUILDING STANDARDS | OHIO EPA
Maintenance Technician Certification
OH-MAINT — Certification Exam
Ohio Maintenance Technician
INSTITUTION Ohio Board of Building Standards | Ohio EPA
PROGRAM Maintenance Technician Certification
EXAM TITLE Ohio Maintenance Technician Examination 2026/2027 | Verified Questions
COURSE TITLE Ohio Maintenance Technician Certification
COURSE CODE OH-MAINT
ACADEMIC YEAR 2026/2027
TOTAL QUESTIONS 150 Questions
© BestSellerStuvia
Academic Year 2026/2027
OH-MAINT | 2026/2027
ACTUAL QUESTIONS
Domain 1: Electrical Systems and Safety (NEC, OSHA, LOTO, GFCI/AFCI)
Question 1. What is the primary purpose of a lockout/tagout (LOTO) procedure?
A. To prevent unexpected energization or startup of machinery during servicing
B. To increase equipment speed
C. To reduce electricity costs
D. To replace personal protective equipment
Correct Answer: A
Rationale: LOTO procedures are designed to isolate energy sources and prevent unexpected energization that could
injure workers during maintenance.
Question 2. Who is primarily responsible for applying a lockout device on equipment being serviced?
A. Any nearby employee
B. The authorized employee performing the servicing
C. Only the supervisor
D. The equipment manufacturer
Correct Answer: B
Rationale: The authorized employee who will perform the servicing is responsible for applying and removing their own
lockout device.
Question 3. A GFCI device trips when leakage current exceeds approximately how many milliamps?
A. 4–6 mA
B. 1–2 mA
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
, © BestSellerStuvia |
C. 15–20 mA
D. 30–50 mA
Correct Answer: A
Rationale: Class A GFCIs are designed to trip when ground-fault current reaches 4–6 mA, providing protection against
shock.
Question 4. In which locations does the NEC generally require GFCI protection for receptacles?
A. Only in bedrooms
B. Bathrooms, kitchens (countertop), garages, and outdoor locations
C. Only in mechanical rooms
D. Only in offices
Correct Answer: B
Rationale: NEC requires GFCI protection in areas where moisture or grounding hazards are present, including
bathrooms, kitchen countertops, garages, and outdoors.
Question 5. What type of protection is typically required for bedroom receptacles under current NEC
rules?
A. GFCI only
B. No special protection
C. AFCI (arc-fault circuit interrupter) protection
D. Only surge protection
Correct Answer: C
Rationale: AFCI protection is required for most dwelling-unit bedroom circuits to detect and interrupt dangerous arcing
faults.
Question 6. When measuring resistance with a multimeter, what must be done first?
A. Energize the circuit
B. Set the meter to amps
C. Connect the leads in series with a load
D. De-energize the circuit and verify zero voltage
Correct Answer: D
Rationale: Resistance measurements must be taken on a de-energized circuit; residual voltage can damage the meter
and produce inaccurate readings.
Question 7. An ammeter must be connected in which configuration to measure current?
A. In series with the load
B. In parallel with the load
C. Across the supply only
D. To the ground wire only
Correct Answer: A
Rationale: Current is measured by placing the ammeter in series so that the full current flows through the meter.
Question 8. What is the most common cause of a circuit breaker tripping repeatedly under normal load?
A. A breaker that is too large
B. An overloaded circuit or a short circuit/ground fault
C. Too little load on the circuit
D. A missing neutral
Correct Answer: B
Rationale: Repeated tripping under normal conditions usually indicates overload, short circuit, or ground fault that the
breaker is correctly interrupting.
Question 9. What does the term “lockout” specifically refer to in LOTO procedures?
A. Placing a warning tag only
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
, © BestSellerStuvia |
B. Turning off a light switch
C. Placing a lock on an energy-isolating device to prevent operation
D. Unplugging a cord only
Correct Answer: C
Rationale: Lockout means applying a lock to an energy-isolating device so that the equipment cannot be operated until
the lock is removed.
Question 10. Which of the following is an example of an energy-isolating device?
A. A push-button start switch
B. A indicator light
C. A thermostat
D. A circuit breaker or disconnect switch
Correct Answer: D
Rationale: Energy-isolating devices include circuit breakers, disconnect switches, valves, and similar devices that
physically prevent the transmission of energy.
Question 11. What is the purpose of a tag used in tagout procedures?
A. To provide a warning that the equipment must not be operated and to identify the person who applied it
B. To permanently disable equipment
C. To replace the need for a lock
D. To indicate the equipment is ready for use
Correct Answer: A
Rationale: A tagout device is a prominent warning device that indicates the equipment must not be operated and
identifies the authorized employee.
Question 12. When working on electrical equipment, what is the minimum approach distance
consideration based on?
A. Only the voltage rating of the equipment
B. The voltage, the type of work, and applicable OSHA/NFPA tables
C. Only the amperage
D. The color of the insulation
Correct Answer: B
Rationale: Approach boundaries are determined by voltage level and are specified in OSHA and NFPA 70E tables for
qualified workers.
Question 13. What does a megohmmeter (megger) primarily measure?
A. Current flow in amperes
B. Voltage drop only
C. Insulation resistance in megohms
D. Power factor
Correct Answer: C
Rationale: A megohmmeter applies a high DC voltage to measure the insulation resistance of wires, motors, and other
equipment.
Question 14. Which color is commonly used for the grounding conductor in U.S. electrical systems?
A. Black or red
B. White or gray
C. Blue
D. Green or green with yellow stripe
Correct Answer: D
Rationale: The equipment grounding conductor is typically green or green with a yellow stripe.
Question 15. What is the primary hazard associated with an overloaded electrical circuit?
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
, © BestSellerStuvia |
A. Overheating of conductors and potential fire
B. Increased efficiency
C. Lower voltage only
D. Improved power factor
Correct Answer: A
Rationale: Overloading causes excessive current that heats conductors, insulation, and connections, creating a fire
hazard.
Question 16. Before working inside an electrical panel, what verification step is required after de-
energizing?
A. Assume it is safe
B. Test for absence of voltage with an appropriately rated meter
C. Only look for indicator lights
D. Wait five minutes without testing
Correct Answer: B
Rationale: OSHA and NFPA 70E require verification of an electrically safe work condition by testing for the absence of
voltage.
Question 17. What is the function of a ground-fault circuit interrupter (GFCI)?
A. To protect against overloads only
B. To regulate voltage
C. To detect imbalance between hot and neutral current and interrupt the circuit when leakage occurs
D. To measure resistance
Correct Answer: C
Rationale: A GFCI continuously compares current leaving on the hot conductor with current returning on the neutral
and trips if a difference (leakage) is detected.
Question 18. Which of the following is a required element of an effective lockout/tagout program?
A. Allowing any employee to remove any lock
B. Using only tags without locks
C. Applying LOTO only during major overhauls
D. Training of authorized and affected employees and periodic inspections
Correct Answer: D
Rationale: An effective LOTO program includes documented procedures, employee training, and periodic inspections to
ensure compliance.
Question 19. What is the typical voltage of a standard U.S. residential lighting circuit?
A. 120 V
B. 12 V
C. 480 V
D. 600 V
Correct Answer: A
Rationale: Standard residential lighting and general-purpose receptacle circuits operate at 120 volts.
Question 20. When replacing a fuse, what is the most important matching characteristic?
A. Color of the fuse
B. Amperage and voltage rating equal to or greater than the original (and type as specified)
C. Length only
D. Manufacturer logo
Correct Answer: B
Rationale: Replacement fuses must match the voltage rating and the amperage (or time-current characteristics)
specified for the circuit.
© BestSellerStuvia | | OH-MAINT | Academic Year 2026/2027
