NCCCO Core Exam Mobile Crane

NCCCO Core Exam Mobile Crane | 100+ Questions and Answers | Graded A+ | / Guide According to OSHA 1926.1431, at what wind speed must a qualified person be consulted?

A) 10 MPH

B) 15 MPH

C) 20 MPH

• 25 MPH - Correct Answer - C) 20 MPH

If working near power lines and using a tag line, which type of rope is least conductive to electricity?

• Cotton
• Nylon
• Hemp
• Polypropylene - Correct Answer - D) Polypropylene

When Working near power line with a mobile crane, where does OSHA require caution stickers be installed on all equipment?

• On the equipment carrier and on the main boom tip 1 / 4

• On the equipment superstructure and the extension
• At operators station and 2 on the outside of the equipment
• At operators station and 5 on the outside of the equipment - Correct

Answer - C) At operators station and 2 on the outside of the equipment According to OSHA Table T, what is the minimum clearance for 133 KV power lines?

• 4 Feet
• 6 Feet
• 10 Feet
• 15 Feet - Correct Answer - C) 10 Feet

According to OSHA, when working near power lines when is a dedicated spotter required?

• When crane moves within 10 ft. of power lines
• When crane moves within 15 ft of power lines
• When crane operator is unable to see the warning line of signs
• When crane signal person is elevated from crane level - Correct

Answer - C) When crane operator is unable to see the warning line of signs According to OSHA's table T, what clearance should a mobile crane in transit keep while going under 445KV lines? 2 / 4

• 4 feet
• 6 feet
• 10 feet
• 16 feet - Correct Answer - D) 16 feet

According to OSHA when is it safe to hoist loads with a mobile crane below energized power lines?

• If a crane is equipped with an isolated link or proximity alarm
• If the crane only raises the boom to a maximum angle of 60 degrees
• When the fully extended boom can't reach the prohibited zone
• The boom is kept 10 feet away from the power lines for 360 degrees -

Correct Answer - C)When the fully extended boom can't reach the prohibited zone According to OSAH 1926.1408, when operating near high voltage power lines, what clearance shall be required when the rating of the lines is 275 KV?

• 5 Feet w/encroachment precautions
• 10 Feet w/ encroachment precautions
• 15 Feet w/encroachment precautions
• 20 Feet w/encroachment precautions - Correct Answer - D) 20 feet

w/encroachment precautions 3 / 4

According to OSHA 1926.1411, when you encounter power lines with a voltage of 44 KV and the crane is traveling, according to Table T, what is the minimum required clearance?

• 4
• 6
• 10
• 16 - Correct Answer - B) 6

According to OSHA 1926.1408, the minimum clearance between any part of the crane and power lines rated 50 kV or below shall be

• 5 Feet w/encroachment precautions
• 10 Feet w/ encroachment precautions
• 15 Feet w/encroachment precautions
• 20 Feet w/encroachment precautions - Correct Answer - B) 10 Feet

w/ encroachment precautions According to OSAH 1926.1408 for power lines rated 100 KV, the minimum clearance between the crane and any line shall be?

• 5 Feet w/encroachment precautions
• 10 Feet w/ encroachment precautions
• 15 Feet w/encroachment precautions
• 20 Feet w/encroachment precautions - Correct Answer - C) 15 Feet

w/encroachment precautions

• / 4