Chart

Overhead powerline clearance zone diagram

Map common overhead powerline clearance zones around buildings, ladders, scaffolds, and service work in Canada.

Chart boundary

Does not set a universal clearance, work authorization, utility approval, or safe approach distance for a specific job.

clearance zone

Where clearance risk appears

The visual map separates worker approach, equipment movement, building projection, and service attachment questions.

Scopejobsite safety and clearanceX-axisobject near lineY-axismovement riskReviewAnnualNextBC Hydro Service Clearance Source Navigation
Where clearance risk appears1Verifyutility diagram2Controlmovement envelope3Escalateline contact risk
The visual map separates worker approach, equipment movement, building projection, and service attachment questions.
worker/tools
equipment movement
building projection
Worker/toolsladder / scaffold

Approach distance must be checked before work.

Moving equipmentboom / lift / truck

Swing radius creates a larger hazard envelope.

Building faceroof / balcony / window

Fixed projections can trigger utility clearance review.

Stop-work triggerunknown voltage or clearance

Do not infer safe approach from this chart.

Decision reference

Show where clearance questions arise before work near overhead powerlines or service drops.

Reference basis: BC Hydro clearance diagrams, ESA powerline safety guidance, and Canadian jobsite safety references.
ConditionChart readingNext checkBoundary
Ladder or scaffold near linesTreat as a powerline safety reviewESA or provincial safety guidanceNo safe approach authorization
New building projectionCheck fixed utility clearance diagramsLocal utility service guideNo design approval
Service mast or attachmentUtility service rules can applyService connection processNo connection approval
Mobile equipment near linesPlan movement envelope, not just final positionQualified safety planNo work procedure

Use notes

  • Use this chart as a planning and conversation aid only.
  • Confirm current utility requirements, product markings, manufacturer instructions, and local authority requirements before field work.
  • Use the linked calculator or table when the task needs project-specific arithmetic.

Reference sources

Open the underlying public references before treating the chart as project guidance.