NCCCO Digger Derrick Operator Certification Exam Preparation
2026 – Practice Questions with Verified Answers and Rationales
Complete Study GuideInstant Download Pdf
Introduction:
This document contains practice questions and verified answers for
the NCCCO Digger Derrick Operator certification exam, covering
rigging, load charts, inspections, electrical safety, underground
utility protection, traffic control, equipment setup, and operating
procedures. It also includes detailed rationales and safety-focused
explanations designed to help candidates prepare for certification
testing. The material reviews OSHA-related requirements, utility
marking standards, lifting operations, and hazard recognition. It
serves as a comprehensive exam preparation resource for digger
derrick operators.
Exam Questions and Answers
What is the strongest sling configuration --- correct precise
answer ---Basket
How much stronger is a basket configuration compared to a
vertical configuration --- correct precise answer ---Two times
stronger
How much weaker is choker configuration compared to a
basket configuration --- correct precise answer ---Half as
strong
,What is the visual inspection of during the pre trip before you
leave the yard --- correct precise answer ---Critical
components
If a checklist is needed who should you consult --- correct
precise answer ---Manufacturer
What does USA --- correct precise answer ---Underground
Service Alert
What publication will you read regarding work site protection
and truck set up --- correct precise answer ---OSHA 1926 sub
part G
If you have a non dialectic truck how close can you get to a
16kv line --- correct precise answer ---Ten feet (up to 50kv)
How far away should you keep from a 750 kv line in a non
dialectic truck --- correct precise answer ---Forty five feet (up
to 1million kv)
How often does a digger Derrick need to be tested
dialectrically --- correct precise answer ---Every two years
What is the most common synthetic rope --- correct precise
answer ---Polydacron
, What are common uses for a digger derrick --- correct precise
answer ---Dig poles, hang transformers, set poles, install
anchor rods
What is a qualified person --- correct precise answer ---
Extricate or degree holder, person who can solve problems
relating to subject matter work or project
What is a competent person --- correct precise answer ---Able
to identify hazards has authorization to take correcting
measures
What does OSHA 1926.959 talk about --- correct precise
answer ---Critical safety components for lifting, thorough
visual inspection before each shift
What are some places of concern during your walk around ---
correct precise answer ---Winch line, hydraulic hose fitting,
auger sling, hose fitting by grabbers,
While performing your walk around what is important to
check for regarding the dialectic certification --- correct
precise answer ---That it is not expired, good for 2 years
How many days ahead should you call before you begin
digging, what number do you call --- correct precise answer --
-2-3 days
2026 – Practice Questions with Verified Answers and Rationales
Complete Study GuideInstant Download Pdf
Introduction:
This document contains practice questions and verified answers for
the NCCCO Digger Derrick Operator certification exam, covering
rigging, load charts, inspections, electrical safety, underground
utility protection, traffic control, equipment setup, and operating
procedures. It also includes detailed rationales and safety-focused
explanations designed to help candidates prepare for certification
testing. The material reviews OSHA-related requirements, utility
marking standards, lifting operations, and hazard recognition. It
serves as a comprehensive exam preparation resource for digger
derrick operators.
Exam Questions and Answers
What is the strongest sling configuration --- correct precise
answer ---Basket
How much stronger is a basket configuration compared to a
vertical configuration --- correct precise answer ---Two times
stronger
How much weaker is choker configuration compared to a
basket configuration --- correct precise answer ---Half as
strong
,What is the visual inspection of during the pre trip before you
leave the yard --- correct precise answer ---Critical
components
If a checklist is needed who should you consult --- correct
precise answer ---Manufacturer
What does USA --- correct precise answer ---Underground
Service Alert
What publication will you read regarding work site protection
and truck set up --- correct precise answer ---OSHA 1926 sub
part G
If you have a non dialectic truck how close can you get to a
16kv line --- correct precise answer ---Ten feet (up to 50kv)
How far away should you keep from a 750 kv line in a non
dialectic truck --- correct precise answer ---Forty five feet (up
to 1million kv)
How often does a digger Derrick need to be tested
dialectrically --- correct precise answer ---Every two years
What is the most common synthetic rope --- correct precise
answer ---Polydacron
, What are common uses for a digger derrick --- correct precise
answer ---Dig poles, hang transformers, set poles, install
anchor rods
What is a qualified person --- correct precise answer ---
Extricate or degree holder, person who can solve problems
relating to subject matter work or project
What is a competent person --- correct precise answer ---Able
to identify hazards has authorization to take correcting
measures
What does OSHA 1926.959 talk about --- correct precise
answer ---Critical safety components for lifting, thorough
visual inspection before each shift
What are some places of concern during your walk around ---
correct precise answer ---Winch line, hydraulic hose fitting,
auger sling, hose fitting by grabbers,
While performing your walk around what is important to
check for regarding the dialectic certification --- correct
precise answer ---That it is not expired, good for 2 years
How many days ahead should you call before you begin
digging, what number do you call --- correct precise answer --
-2-3 days
