NCCCO CORE CERTIFICATION PREP
EXAM QUESTIONS WITH VERIFIED
ANSWERS 2026/2027
1. According to OSHA 1926.1408, what is the minimum clearance distance for power lines up
to 50kV when the voltage is not known?
A. 10 feet
B. 20 feet
C. 15 feet
D. 45 feet
Answer: B
Conceptual Explanation: If the voltage is not known and the line is up to 350kV, the
minimum clearance is 20 feet under OSHA 1926.1408 Table T.
2. In which situation should a tag line be used during a lift?
A. When the load is light enough to carry by hand
B. When rotation of the load is hazardous
C. When lifting over power lines
D. Only when required by the crane manufacturer
,Answer: B
Conceptual Explanation: Tag lines should be used whenever it is necessary to prevent the
load from swinging or rotating in a way that creates a hazard.
3. What is the removal criterion for standing wire rope (pendants) according to ASME B30.5?
A. More than two broken wires in one lay in sections beyond end connections
B. More than three broken wires in one lay in sections beyond end connections
C. Both A and C
D. One broken wire at an end connection
Answer: C
Conceptual Explanation: ASME B30.5 states standing rope must be removed if there are
more than two broken wires in one lay in sections beyond end connections or more than
one broken wire at an end connection.
4. Which entity is responsible for ensuring the ground conditions are adequate to support the
crane?
A. The Controlling Entity
B. The Signalperson
C. The Crane Operator
D. The Lift Director
Answer: A
, Conceptual Explanation: Under OSHA 1926.1402, the controlling entity is responsible for
ensuring the ground is firm, graded, and drained sufficiently to support the crane.
5. When leveling a crane on outriggers, how should the level be checked?
A. Only in the front and back
B. Using the bubble level in the cab only
C. By looking at the boom angle indicator
D. In two directions 90 degrees apart at the turntable
Answer: D
Conceptual Explanation: For maximum accuracy, the crane should be leveled by checking
at the turntable in two directions 90 degrees apart.
6. What happens to the capacity of a crane when the boom length remains the same but the
boom angle is decreased?
A. Capacity increases
B. Capacity remains the same
C. Capacity decreases
D. Radius decreases
Answer: C
Conceptual Explanation: Decreasing the boom angle increases the load radius, which
significantly decreases the crane’s lifting capacity.
EXAM QUESTIONS WITH VERIFIED
ANSWERS 2026/2027
1. According to OSHA 1926.1408, what is the minimum clearance distance for power lines up
to 50kV when the voltage is not known?
A. 10 feet
B. 20 feet
C. 15 feet
D. 45 feet
Answer: B
Conceptual Explanation: If the voltage is not known and the line is up to 350kV, the
minimum clearance is 20 feet under OSHA 1926.1408 Table T.
2. In which situation should a tag line be used during a lift?
A. When the load is light enough to carry by hand
B. When rotation of the load is hazardous
C. When lifting over power lines
D. Only when required by the crane manufacturer
,Answer: B
Conceptual Explanation: Tag lines should be used whenever it is necessary to prevent the
load from swinging or rotating in a way that creates a hazard.
3. What is the removal criterion for standing wire rope (pendants) according to ASME B30.5?
A. More than two broken wires in one lay in sections beyond end connections
B. More than three broken wires in one lay in sections beyond end connections
C. Both A and C
D. One broken wire at an end connection
Answer: C
Conceptual Explanation: ASME B30.5 states standing rope must be removed if there are
more than two broken wires in one lay in sections beyond end connections or more than
one broken wire at an end connection.
4. Which entity is responsible for ensuring the ground conditions are adequate to support the
crane?
A. The Controlling Entity
B. The Signalperson
C. The Crane Operator
D. The Lift Director
Answer: A
, Conceptual Explanation: Under OSHA 1926.1402, the controlling entity is responsible for
ensuring the ground is firm, graded, and drained sufficiently to support the crane.
5. When leveling a crane on outriggers, how should the level be checked?
A. Only in the front and back
B. Using the bubble level in the cab only
C. By looking at the boom angle indicator
D. In two directions 90 degrees apart at the turntable
Answer: D
Conceptual Explanation: For maximum accuracy, the crane should be leveled by checking
at the turntable in two directions 90 degrees apart.
6. What happens to the capacity of a crane when the boom length remains the same but the
boom angle is decreased?
A. Capacity increases
B. Capacity remains the same
C. Capacity decreases
D. Radius decreases
Answer: C
Conceptual Explanation: Decreasing the boom angle increases the load radius, which
significantly decreases the crane’s lifting capacity.
