NCCCO Digger Derrick study guide
NCCCO Digger Derrick · Work through your exam, one topic at a time.
The NCCCO Digger Derrick Operator Certification is a credential for people who operate digger derricks - the truck-mounted machines that auger holes and set poles and other structures, most often in utility and line-construction work. It signals that an operator has demonstrated knowledge of safe setup, operation, and load handling to a certifying body's standard, and it is typically sought by apprentice and journey-level operators, crew leads, and employers who want documented competency before putting someone on a machine. The NCCCO Digger Derrick study guide has 8 sections and about 2,682 words.
01Site Evaluation, Setup, and Ground Conditions
This domain tests the pre-setup survey: can you find a position where the carrier, outriggers, and spoil pile are stable, legal, and clear of overhead and underground hazards? Call 811 and locate underground utilities, septic tanks, culverts, and old foundations before any auger touches soil.
340 words, about 2 min02Digger Derrick Components, Terminology, and Load Charts
Expect questions on component names, how the rated capacity chart is read, and how attachments and rigging reduce available capacity. A digger derrick is a truck-mounted unit with a turret, lower and upper boom, fiberglass insulating section, auger and Kelly bar, pole claw or grabber, winch, jib, outriggers, and controls.
378 words, about 2 min03Pre-Operation Inspection and Maintenance
This domain tests the daily walk-around, functional checks, and the judgment to tag a machine out of service rather than “work around” a defect. Structure: boom sections, turret, frame, outrigger beams and pins, pads, welds, and the fiberglass insulating section for cracks, gouges, moisture, or contamination.
326 words, about 2 min04Stability, Outriggers, and Load Moment/Radius Management
Questions focus on why the machine tips, how load moment grows with radius, and how outrigger setup and operating technique preserve stability. Load moment = load x radius.
325 words, about 2 min05Digging Operations and Auger Use
This domain tests safe auger operation: utility protection, vertical alignment, spoil control, obstruction handling, and keeping people out of the danger zone. Verify utility locations and hand-dig within the required tolerance near marks.
336 words, about 2 min06Pole Handling, Setting, and Lifting Operations
This domain tests planning and executing pole lifts: weight verification, rigging, chart checks, controlled movement, and setting the pole without exposing the crew. Know the pole weight before lifting; confirm it from the tag or delivery documentation.
333 words, about 2 min07Electrical Hazards and Utility Work Near Energized Lines
This domain tests recognition of energized-line hazards, application of minimum approach distances, and the limits of insulating boom sections. Treat all lines as energized until the utility confirms otherwise.
343 words, about 2 min08Signals, Communication, and Personnel Coordination
This domain tests crew communication: designated signal persons, standard hand signals, radio discipline, stop authority, and line-of-sight rules. Designate one signal person and agree on hand signals or radio channels before the lift or dig.
301 words, about 2 min