CHST CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS 2026
▶ What does the severity of electric shock depend on? Answer: Path of
current, amount of current, duration of exposure
▶ True or false: electrical current as low as 75 milliamps can cause death?
Answer: True
▶ What are some examples of surcharge loads? Answer: Spoils pile and
equip being too close to walls
▶ What is the correct extension cord for construction? Answer: 3 wire type
designed for hard or extra hard use
▶ True or false: Exposed metal parts of equipment should be grounded
Answer: True
▶ How does a gfci protect against electrical shock? Answer: Detects the
difference in current between the black and white wires
▶ How can overloaded circuit hazards be controlled? Answer: Through the
use of electrical protective devices
▶ What are some examples of electrical protective devices? Answer:
Gfcis, fuses, circuit breakers
▶ What is static electricity? Answer: An electric charge that cannot move
▶ How wide must the platform of a scaffold be? Answer: 18 inches
▶ The platform of a scaffold must be capable of supporting its weight and
__________ times the maximum load. Answer: Four
▶ The ropes or wires used in suspension scaffolds must be capable of
supporting ______ times the load. Answer: Six
, ▶ What should be used to restrain supported scaffold platforms from
tipping? Answer: Guys, ties, or braces
▶ What is Fall Prevention? Answer: The process, equipment, and
methods used to actually prevent a fall from occurring.
▶ What is fall protection? Answer: The process, equipment, and methods
used to protect a worker once a fall has occurred.
▶ The top edge height of a guardrail should be _________ in. above the
walking/working surface. Answer: 42 +/- 3
▶ What are some common hazards associated with hot work? Answer: -
Health hazards (air contaminants from welding operations [iron oxide, zinc,
beryllium, copper], burns, burns to the eyes from flashes)
-Physical hazards (tripping from hoses)
-fires and explosions (igniting gases, improper storage)
▶ What are some controls for the hazards created when performing hot
work? Answer: Protect or remove fire hazards in the area, confine heat,
sparks, and slag, fire extinguishing equipment available, ventilation
▶ What are some common electrical hazards? Answer: Exposed electrical
parts, overhead power lines, inadequate wiring, defective or damaged
cords and wires, improper use of flexible cords, improper grounding,
overloaded circuits
▶ What are some controls utilized for electrical hazards? Answer:
Training, planning, gfci's, fuses, circuit breakers, lockout tagout
▶ What are some common hazards associated with excavations? Answer:
Weight (nearby vehicles/equipment), vibration, underground utilities, water
and soil erosion.
▶ What is a surcharge load? Answer: The spoils pile and the equipment
being too close to the vertical walls of the trench.
AND VERIFIED ANSWERS 2026
▶ What does the severity of electric shock depend on? Answer: Path of
current, amount of current, duration of exposure
▶ True or false: electrical current as low as 75 milliamps can cause death?
Answer: True
▶ What are some examples of surcharge loads? Answer: Spoils pile and
equip being too close to walls
▶ What is the correct extension cord for construction? Answer: 3 wire type
designed for hard or extra hard use
▶ True or false: Exposed metal parts of equipment should be grounded
Answer: True
▶ How does a gfci protect against electrical shock? Answer: Detects the
difference in current between the black and white wires
▶ How can overloaded circuit hazards be controlled? Answer: Through the
use of electrical protective devices
▶ What are some examples of electrical protective devices? Answer:
Gfcis, fuses, circuit breakers
▶ What is static electricity? Answer: An electric charge that cannot move
▶ How wide must the platform of a scaffold be? Answer: 18 inches
▶ The platform of a scaffold must be capable of supporting its weight and
__________ times the maximum load. Answer: Four
▶ The ropes or wires used in suspension scaffolds must be capable of
supporting ______ times the load. Answer: Six
, ▶ What should be used to restrain supported scaffold platforms from
tipping? Answer: Guys, ties, or braces
▶ What is Fall Prevention? Answer: The process, equipment, and
methods used to actually prevent a fall from occurring.
▶ What is fall protection? Answer: The process, equipment, and methods
used to protect a worker once a fall has occurred.
▶ The top edge height of a guardrail should be _________ in. above the
walking/working surface. Answer: 42 +/- 3
▶ What are some common hazards associated with hot work? Answer: -
Health hazards (air contaminants from welding operations [iron oxide, zinc,
beryllium, copper], burns, burns to the eyes from flashes)
-Physical hazards (tripping from hoses)
-fires and explosions (igniting gases, improper storage)
▶ What are some controls for the hazards created when performing hot
work? Answer: Protect or remove fire hazards in the area, confine heat,
sparks, and slag, fire extinguishing equipment available, ventilation
▶ What are some common electrical hazards? Answer: Exposed electrical
parts, overhead power lines, inadequate wiring, defective or damaged
cords and wires, improper use of flexible cords, improper grounding,
overloaded circuits
▶ What are some controls utilized for electrical hazards? Answer:
Training, planning, gfci's, fuses, circuit breakers, lockout tagout
▶ What are some common hazards associated with excavations? Answer:
Weight (nearby vehicles/equipment), vibration, underground utilities, water
and soil erosion.
▶ What is a surcharge load? Answer: The spoils pile and the equipment
being too close to the vertical walls of the trench.
