The Exemption Question Every Utility Crew Asks
OSHA's construction crane rule excludes digger derricks when they're used to auger holes for poles carrying electric or telecommunication lines, place and remove those poles, or handle associated materials to be installed or removed from them. That work is governed instead by the power-line standards in 29 CFR 1910.269 or Subpart V of Part 1926.
Step outside that scope — setting a sign structure, placing light-pole bases on a commercial site, or lifting building materials — and the digger derrick is treated like any other crane under Subpart CC. At that point operator certification under 1926.1427 applies.
Because crews routinely cross that line without noticing, many utilities and contractors certify their operators regardless. The NCCCO credential also gives employers a consistent baseline when they evaluate operators for their own fleets. If you're unsure where your work falls, ask your safety department and confirm with OSHA.
NCCCO Digger Derrick Certification at a Glance
| Element | What to expect |
|---|---|
| Eligibility | Age 18+, CCO substance abuse policy and code of ethics |
| Written exam | Equipment knowledge, setup, operations near energized lines, load charts and regulations |
| Practical exam | Hands-on tasks on a digger derrick, scored by an NCCCO examiner |
| Completion window | Pass the remaining component within 12 months of the first |
| Validity | Five years; recertify during the final 12 months |
| Authority on details | Digger Derrick candidate handbook on nccco.org |
What the Written Exam Expects You to Know
Our digger derrick training program covers each topic.
Boom, auger, winch and pole guide components and controls
Derrick load charts and how capacity changes with boom angle and extension
Outrigger setup on shoulders, slopes and soft ground
Auger torque, pole handling and keeping the pole under control
Minimum approach distances and insulated vs. non-insulated booms
Where Subpart CC, Subpart V and 1910.269 each apply
Certification and Your Employer’s Evaluation
Even a fully certified digger derrick operator must be evaluated by the employer on the derricks they will actually run, under OSHA 1926.1427 when the work is covered. Utilities typically document this alongside their own line-clearance training. Certification shows you know the equipment class; the evaluation shows you can safely run that particular truck with its controls, insulation rating and attachments.
How OSHA crane certification rules fit together →Getting Your Crew Certified
Map the work
List which jobs fall under the utility exemption and which don't — that decides who must certify first.
Study online between calls
Self-paced modules fit storm duty and rotating schedules.
Test written, then practical
Book exams through NCCCO and arrange a practical on a suitable digger derrick.
Evaluate on your own trucks
Document employer evaluations on the specific derricks each operator runs.