1
Set the scene
Start with context
Fill the frame
2–3 ft for close-ups; keep ladders, cords and workers fully in view.
Electrical
Overhead Power Lines Kill When Equipment Gets Too Close
Confirm clearance before the boom ever swings
Contact with energized overhead power lines is a leading cause of electrocution on construction and utility sites. Cranes, aerial lifts, dump beds, and even hand-carried materials can bridge the gap to a line and send lethal current through anyone in the path. OSHA Scan analyzes job-site photos to flag equipment operating within dangerous clearance distances of overhead lines before the boom, mast, or load moves.
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AI analysis preview
1
Hazard detectedSample report
1CriticalOverhead Line Contact
May relate to 29 CFR 1926.1408
1 in 2
Line-contact incidents are fatal
20 ft
Minimum default crane clearance from lines
~50
Crane line-contact deaths a year in the US
~15s
Typical time to get scan results
What this scenario looks like
Overhead line contact is any situation where equipment, a load, or a worker comes within the required clearance distance of an energized overhead power line. It shows up as a crane boom rotating beneath a distribution line, an aerial lift raised near service drops, a dump truck bed elevated under wires, or scaffolding and ladders erected too close to a line running along the property.
In practice, these hazards appear when crews misjudge distance from the ground, when lines are assumed to be deenergized or insulated when they are not, or when an operator focuses on the load and forgets the line overhead. Wind-blown lines, sagging spans on hot days, and moving equipment across a site all change the clearance moment to moment, and a spotter is often missing when it matters most.
The danger is that power lines give no warning before contact and the current does not require a direct touch — electricity can arc across an air gap to a boom or load. A worker touching the equipment or standing near the point of contact can be electrocuted through step and touch potential, which is why confirming clearance from a photo before work matters.
A labelled example scan for this scenario
Here is what an OSHA Scan report looks like for overhead line contact. It is an illustrative example built from this scenario's hazards — clearly marked, not live scan data.
Example report
Illustrative — not live scan dataCompliance score
49
Lower means more potential hazards found
3 potential hazards found
1 Critical1 High1 Medium
Overhead Line Contact
CriticalPossibly related to Power line safety (up to 350 kV) — equipment operations (29 CFR 1926.1408)
Observed condition: Overhead line contact is any situation where equipment, a load, or a worker comes within the required clearance distance of an energized overhead power line.
Corrective action: Coordinate with the utility to deenergize, relocate, or insulate lines before work
High confidence
Overhead Line Contact: Power line safety — assembly and disassembly
HighPossibly related to Power line safety — assembly and disassembly (29 CFR 1926.1407)
Observed condition: Requires clearance procedures and a dedicated spotter or other measures when assembling or disassembling cranes near overhead power lines.
Corrective action: Install line-clearance barriers, goal posts, or warning banners at approach points
Medium confidenceNot fully clear from the photo — verify on site.
Overhead Line Contact: General requirements for electrical safety
MediumPossibly related to General requirements for electrical safety (29 CFR 1926.416)
Observed condition: Prohibits work near energized parts unless the worker is protected, and requires determining line locations and clearances before beginning work near power circuits.
Corrective action: Use range-limiting devices or boom stops to cap crane reach near lines
High confidence
AI-generated analysisThese findings are potential hazards flagged by AI from a single photo. They are a starting point for your own review — not an official OSHA determination. Verify conditions on site with a qualified person before acting.
Why this scenario matters
Immediate consequences
Contact with an energized line causes electrocution, severe burns, and cardiac arrest. Current can travel through the equipment and the ground, injuring the operator and anyone nearby at the same time.
Legal & financial impact
Power-line clearance rules under 29 CFR 1926.1408 are strictly enforced. A serious violation exceeds $16,000, willful or repeat findings can surpass $165,000, and a fatality can trigger criminal referral and utility-damage claims.
Operational impact
A line contact can knock out power to an area, damage the crane, halt the project during an OSHA investigation, and expose the contractor to utility repair costs and sharply higher insurance premiums.
Industry-specific concerns
Crane operators, utility crews, roofers, tree services, and framing contractors all work near overhead lines, often on tight urban lots where clearance is measured in a few feet.
How OSHA Scan detects this hazard
OSHA Scan uses an AI vision model to identify overhead power lines and estimate equipment clearance. Upload a photo of the work zone and it locates overhead lines, flags cranes, lifts, or loads operating within a dangerous clearance distance, notes whether a spotter or barricade is present, and returns a severity rating with the OSHA standard it may relate to in seconds.
Analyze your first photo freeScanning
1
Hazard found
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Upload a real job-site photo and OSHA Scan detects visible hazards in seconds — no account needed to run your first scan.
- Cranes or lifts working close to overhead lines, flagged with clearance concern
- The power-line clearance standard each near-line move may relate to
- A reminder that exact line voltage and spacing need utility confirmation
Live OSHA hazard analysis
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2AI analysis
3See report
Use the real site or facility name. If you save the scan after signup, it becomes the report name.
Three angles, one deeper scan
Only the wide shot is required — every extra angle gives the AI more places to look.
Required: Set the scene — one wide shot lets the AI sweep the whole area at once
Stand at the entry point and capture corner to corner: floors, ladders, scaffolds, and everyone at work
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Results in ~15sReferences relevant OSHA standardsPrivate - deleted in 48h unless you save it
Accuracy boosters
Small habits, sharper scans
2
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Make the frame usable
Light it right
Keep the sun or lights behind you — glare and shadows hide hazards.
Tap to focus
Tap the hazard on screen and hold still one second — blur can't be flagged.
3
Choose the useful view
Give the AI room to understand
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Turn your phone sideways — a wider frame catches more of the scene.
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or scan with video
Only upload photos you have permission to use, and avoid images showing personal, customer, or confidential information. Demo photos and results are held privately for up to 48 hours so you can save them to a free account; unclaimed photos are deleted automatically. Results are an AI-assisted preliminary review, not an official OSHA determination.
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Stand at the entrance and photograph the entire work area so AI sees the full context
Hazard areas
Photograph elevated surfaces, equipment, electrical panels, and anywhere workers are active
Close-ups last
Move in close on anything damaged, missing, or that looks risky — the AI catches more detail
Real incident case study
A boom raised under a distribution line
The situation
A crew was using a boom truck to hoist roofing materials to a two-story commercial building. A distribution line ran along the street side of the property, but the operator judged there was 'plenty of room' and did not set a clearance zone or assign a dedicated spotter.
What went wrong
As the operator luffed the boom to reposition the load, the boom tip came within a foot of the line and current arced across the gap. A ground worker steadying the load was shocked through the tag line and suffered severe burns and cardiac arrest before coworkers could reach the disconnect.
How OSHA Scan would have prevented it
A photo of the setup run through OSHA Scan before the lift would have identified the distribution line, flagged the boom's planned path as inside the minimum clearance distance, cited 29 CFR 1926.1408, and prompted the crew to reposition, deenergize the line, or set a dedicated spotter and barricade.
Lessons learned
Distance from the ground is deceiving and lines can arc without contact. Every lift near overhead power requires a confirmed clearance zone, a dedicated spotter, and, where possible, utility coordination to deenergize or cover the line.
Prevention best practices
Layered controls, from most to least effective.
Engineering controls
Remove or physically limit the chance of equipment reaching an energized line.
- Coordinate with the utility to deenergize, relocate, or insulate lines before work
- Install line-clearance barriers, goal posts, or warning banners at approach points
- Use range-limiting devices or boom stops to cap crane reach near lines
- Fit equipment with proximity alarms or insulating line guards where required
Administrative controls
Plan the lift and enforce clearance rules before equipment moves.
- Determine line voltage and set the required minimum clearance distance before work
- Assign a dedicated spotter with an unobstructed view of the load and line
- Establish and barricade a no-encroachment clearance zone around lines
- Hold a pre-lift meeting covering line locations and clearance limits
- Prohibit work near lines in high wind or poor visibility
Personal protective equipment
Protect workers who must operate or work near energized-line hazards.
- Insulated gloves and arc-rated clothing rated for the exposure
- Non-conductive hard hats and dielectric footwear
- Insulated tools and non-conductive tag lines for load handling
- Inspect all insulating PPE and tools before each use and remove damaged gear
OSHA compliance & citations
The federal standards this hazard may relate to.
29 CFR 1926.1408
Power line safety (up to 350 kV) — equipment operations
Requires determining line voltage and maintaining minimum clearance distances, or deenergizing and grounding lines, before operating cranes or equipment near energized overhead power lines.
Up to $16,550 per serious violation; $165,514 for willful or repeat
29 CFR 1926.1407
Power line safety — assembly and disassembly
Requires clearance procedures and a dedicated spotter or other measures when assembling or disassembling cranes near overhead power lines.
Up to $16,550 per serious violation
29 CFR 1926.416
General requirements for electrical safety
Prohibits work near energized parts unless the worker is protected, and requires determining line locations and clearances before beginning work near power circuits.
Up to $16,550 per serious violation
Incident response protocol
If an incident occurs, act fast and in order.
Immediate actions (first 5 minutes)
- 1Call 911 immediately and report a possible electrocution
- 2Keep everyone at least the clearance distance away from the equipment and ground
- 3Do not touch the victim or equipment if contact with the line may be ongoing
- 4Have the operator stay in the cab and try to break contact if safe
- 5Assign someone to direct emergency responders and the utility to the site
Emergency response (5-30 minutes)
- 1Cooperate fully with arriving emergency responders and the utility
- 2Confirm the line is deenergized by the utility before anyone approaches
- 3Provide first aid or CPR only after the area is confirmed safe
- 4Account for all workers and stop nearby lifting operations
- 5Document the scene, line, and equipment position with photos once safe
Post-incident
- 1Notify OSHA within 8 hours for a fatality, or 24 hours for a hospitalization
- 2Launch an incident investigation within 24 hours
- 3Preserve the equipment position, logs, and all documentation
- 4Interview the operator, spotter, and witnesses while details are fresh
- 5Revise lift plans and clearance procedures and retrain the crew
Team training module
Workers will understand how overhead line contact causes electrocution, recognize energized lines in the work zone, and maintain the required clearance distances during equipment operation.
Train operators and ground crews before any work near overhead lines, refresh annually, and reinforce with a pre-lift briefing using real site photos to confirm clearances.
Training topics
- How overhead line contact and arcing cause electrocution
- Identifying overhead lines and estimating voltage
- Minimum clearance distances by voltage
- Planning lifts and travel paths near lines
- Role and positioning of a dedicated spotter
- Utility coordination: deenergizing, relocating, and insulating lines
- Step and touch potential and how to move if contact occurs
- Barricades, warning banners, and clearance zones
- Emergency response for a line-contact incident
- OSHA requirements and penalties for line-clearance violations
Compliance checklist
Run these checks to stay ahead of citations.
Daily pre-work inspection
- All overhead lines in the work zone identified and marked
- Line voltage determined and minimum clearance distance set
- Clearance zone barricaded and no-encroachment area posted
- Dedicated spotter assigned with a clear view of load and line
- Utility contacted for deenergizing or covering where needed
- Equipment travel and boom paths planned to avoid lines
- Weather and wind assessed for safe work near lines
- Crew briefed on line locations and clearance limits
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Frequently asked questions
How far must a crane stay from overhead power lines?
Under 29 CFR 1926.1408, the default minimum clearance is 20 feet for lines up to 350 kV, with larger distances for higher voltages. The distance can be reduced only if the line is deenergized and grounded or specific protective measures and clearances are established.
Do power lines have to be touched to cause electrocution?
No. High-voltage electricity can arc across an air gap to a boom or load without direct contact. Anyone touching the equipment or standing near the point of contact can be injured through the equipment and the ground.
Are overhead lines insulated for safety?
Most overhead distribution and transmission lines are bare or only weather-coated, not insulated for contact. Never assume a line is insulated or deenergized; treat every overhead line as energized until the utility confirms otherwise.
Who determines the voltage and clearance distance?
The employer must determine the line voltage before work, usually by contacting the utility owner or operator, and then apply the correct minimum clearance distance. A dedicated spotter is required when equipment could breach the clearance zone.
What should a worker do if equipment contacts a line?
The operator should stay in the cab if possible, keep everyone away, and try to break contact by moving the equipment clear. If they must exit due to fire, they should jump clear without touching the equipment and ground at once, then shuffle away with feet together.
What are the OSHA penalties for overhead line contact violations?
A serious violation of 29 CFR 1926.1408 can exceed $16,000, and willful or repeat violations can surpass $165,000 per instance. Fatal incidents can also lead to criminal referral, utility damage claims, and long-term insurance increases.
When should the utility be contacted before a job?
Contact the utility during planning whenever cranes, lifts, or elevated work will occur near overhead lines. Deenergizing, relocating, or insulating the line is the most effective control and should be arranged before equipment arrives on site.
How accurate is OSHA Scan at detecting overhead line hazards?
OSHA Scan flags overhead line-clearance hazards. It locates overhead lines, estimates equipment clearance, and returns the location and the OSHA citation it may relate to.
Confirm line clearance before every lift
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What the AI can and can't detect
OSHA Scan reads a single photo. That makes it fast and easy for anyone on site — but it also means it has real limits. Here's an honest look at both.
What it can catch from a photo
- Missing or incorrect PPE that is visible in the frame
- Unprotected edges, open holes, and visible fall hazards
- Housekeeping, trip, and blocked walkway or exit hazards
- Visible electrical, struck-by, and equipment-guarding hazards
What a photo can't tell it
- Hazards hidden from view or anything outside the photo
- Exact heights, distances, weights, or measurements
- Training records, procedures, or how equipment is actually used
- Full legal compliance or an official OSHA pass/fail determination
OSHA Scan gives an AI-assisted preliminary review from a photo. It does not replace an on-site inspection by a qualified safety professional, and a compliance score is not an official OSHA determination.
Reviewed by OSHA Scan Editorial
Last updated August 29, 2026
This content is produced by the OSHA Scan Editorial team and reviewed with AI assistance. It is general safety information, not legal or compliance advice. OSHA Scan is an independent tool and is not affiliated with, endorsed by, or certified by OSHA or the U.S. Department of Labor.
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