Quick answer: Working near overhead power lines is a High Risk Construction Work (HRCW) category under the model WHS Regulations. A SWMS is required before this work commences on a construction project. The exact documents needed will depend on the activities involved — including the presence of mobile plant, EWPs, spotters, or vegetation management — and the proximity to energised lines.
Last reviewed: June 2026 by the BlueSafe Technical Team. Reflects current Australian WHS requirements.
Working near overhead power lines is one of the highest-consequence activities in construction and civil work. Contact with an energised line — whether by a worker on foot, a plant operator, or an EWP boom — can be immediately fatal. The risk is not limited to direct contact. Arc flash from an energised conductor can cause serious burns and cardiac events at distances that workers may not anticipate. This is why overhead power line work sits firmly in the High Risk Construction Work category and why documentation, planning, and coordination with the network operator are not optional.
At a glance
| Item | Summary |
|---|---|
| SWMS required? | Yes — HRCW trigger applies on construction projects |
| HRCW trigger | Work near energised electrical installations or services |
| Licence required? | Electrical work on lines requires licensed electricians — non-electrical work near lines requires competent supervision and, often, network operator authorisation |
| No-go zone distances | Typically 3 m for low-voltage lines; greater for high-voltage — varies by state, voltage level, and network operator |
| Key controls | Exclusion zones, spotters, tiger tails or line covers, de-energisation permits, network operator notification |
| Main risk | Electrocution, arc flash, plant or EWP boom contact with energised conductors |
Recommended SWMS set
The table below lists SWMS that are commonly needed when working near overhead power lines. The combination required will depend on the specific tasks, plant on site, and the nature of the overhead lines involved.
| SWMS | Why it may be needed |
|---|---|
| Work Near Overhead Power Lines SWMS | The foundational document for any work that brings people, plant, or materials into proximity with energised overhead lines — covers approach distances, exclusion zones, and emergency response |
| Working Near Overhead Power Lines No-Go Zones SWMS | Specifically addresses the establishment, marking, and maintenance of no-go zones around overhead conductors — critical where the work boundary is close to or changing near the lines |
| Spotter Duties for Overhead Dangers SWMS | Where a designated spotter is appointed to monitor and communicate plant or worker proximity to overhead lines — covers spotter positioning, communication protocols, and stop-work authority |
| Mobile Plant SWMS | Where excavators, cranes, telehandlers, trucks, or other mobile plant are operating near overhead lines — plant contact with energised conductors is a leading cause of electrical fatalities on construction sites |
| Elevating Work Platform (EWP) SWMS | Where a boom lift, scissor lift, or truck-mounted EWP is being used and the elevated platform or boom could approach the exclusion zone around overhead lines |
| Vegetation Management Near Power Lines SWMS | Where vegetation clearing, trimming, or management work is being carried out in the vicinity of overhead power lines — a common scenario in civil, council, and utility work |
When does work near overhead power lines need a SWMS?
Under Australian WHS legislation, a SWMS is required for High Risk Construction Work on a construction project. The model WHS Regulations (adopted across NSW, Queensland, South Australia, Western Australia, Tasmania, the ACT, and the Northern Territory) list work near energised electrical installations or services as a HRCW category. This means the trigger is not the intent to work on the lines — it is the proximity of the work to energised conductors.
What counts as "near" overhead power lines?
The definition of "near" is not fixed in the model WHS Regulations themselves. Instead, minimum approach distances are set by electrical safety legislation, electrical safety codes of practice, and individual network operator requirements. These vary across jurisdictions and by line voltage. As a practical guide:
- Low-voltage distribution lines (up to 1,000 V): a 3-metre horizontal exclusion zone is commonly referenced, though some states and network operators require greater separation
- High-voltage distribution lines (above 1,000 V to 33 kV): minimum approach distances increase significantly — commonly 6 metres or more
- Transmission lines (above 33 kV): exclusion zones are larger still and may require formal written authorisation from the transmission network operator before any nearby work begins
These figures are illustrative. The actual requirement for any specific site depends on the voltage of the lines, the jurisdiction, and what the relevant network operator requires. Always check with the network operator and your state electrical safety regulator before work commences.
Note on jurisdiction
Victoria operates under separate WHS and electrical safety legislation to the model WHS framework. In all jurisdictions, the relevant electrical safety regulator (such as Energy Safe Victoria, SafeWork NSW, Electrical Safety Office Queensland, or the equivalent) publishes guidance on approach distances and safe working requirements near overhead power lines. Duty holders must check the requirements applicable to their state or territory.
Common hazards when working near overhead power lines
The hazard profile for overhead power line work is distinct from most other construction activities because the energy source is external to the worksite, always energised unless specifically de-energised by the network operator, and invisible in its extent — the air around a conductor can conduct a lethal arc.
- Electrocution — direct contact with an energised conductor by a worker, plant component, or conductive material is immediately life-threatening
- Arc flash — an electrical arc can occur before physical contact when a sufficiently conductive object or body approaches the conductor within arc distance, causing severe burns, fire, and cardiac injury
- Plant contact with conductors — excavator booms, crane jibs, EWP platforms, truck trays, and tipper bodies are among the most common plant components to make contact with overhead lines during construction operations
- Conductive materials bridging the exclusion zone — metal scaffold poles, reinforcing bar, extension ladders, cable drums, and similar materials can bridge the distance to a conductor if carried or raised without clearance checks
- Induced voltage — even without direct contact, working under high-voltage transmission lines can create induced voltages in metal structures and plant
- Fire — arc flash and conductor contact can ignite vegetation, structures, and plant, creating secondary fire risk
- Communication failure — workers and plant operators may not be able to see the overhead lines clearly from their work position, making spotter communication critical
- Assumption of de-energisation — energised lines can appear identical to de-energised ones; assuming a line is safe without confirmation from the network operator is a primary cause of incidents
Controls that should be reflected in your SWMS
A SWMS for working near overhead power lines should document the specific controls in place for the job. Common controls include:
- Exclusion zone establishment — physical barriers, witches hats, bunting, and signage marking the boundary of the no-go zone around the lines, set at or beyond the minimum approach distance
- Spotter appointment — a designated and competent spotter with clear line of sight to the overhead lines and to the plant or workers they are monitoring, with defined stop-work authority
- Tiger tails and line covers — physical insulating covers installed on conductors by the network operator or authorised contractor to reduce the consequence of inadvertent contact (note: these do not make lines safe to touch — they reduce but do not eliminate risk)
- De-energisation permit — where practical, work should be planned to coincide with the network operator de-energising the relevant section of line; this requires advance notice and formal confirmation from the operator
- Network operator notification — formal contact with the network operator prior to work commencing, and written confirmation of the operator's requirements and any conditions on the work
- Height restriction devices on plant — physical boom height limiters or travel height restrictions fitted to plant operating near lines
- Briefing and toolbox talk — pre-start briefing covering the overhead line location, exclusion zone boundaries, spotter identity, communication method, and emergency response for line contact
Other documents you may need
A SWMS is one part of the documentation framework for working near overhead power lines. Other documents that are commonly required or expected include:
| Document | When typically needed |
|---|---|
| Permit from network operator | Where work will approach minimum approach distances — the operator may issue a permit to work, a written consent, or a de-energisation request |
| Site-specific risk assessment | Before work commences — identifies line voltage, location, proximity to work areas, and site-specific control measures |
| Spotter appointment record | Where a spotter is required — documents the person appointed, their competency, their responsibilities, and their authority to stop work |
| Plant pre-start checklists | For all plant operating near lines — confirms height restrictions, boom limiters, and equipment condition before each shift |
| Emergency response plan | Site-specific plan for responding to line contact, electrocution, or arc flash — including network operator emergency contact numbers |
| Toolbox talk record | Pre-start discussion with all workers and plant operators covering the overhead line location, no-go zones, spotter arrangements, and stop-work procedures for that day |
| Worker competency records | Evidence that workers and plant operators understand the hazards and controls — relevant where operators are working in close proximity to lines |
Example scenario
A civil contractor is excavating trenches for services in a residential street. Overhead low-voltage distribution lines run along the nature strip, and the excavation work will bring the excavator boom within approximately five metres of the conductors at certain points. A concrete pump truck will also be on site for a poured footing.
For this job, the contractor should consider having in place:
- A Work Near Overhead Power Lines SWMS covering the approach distances, exclusion zone setup, stop-work triggers, and emergency contact arrangements
- A Working Near Overhead Power Lines No-Go Zones SWMS covering how the no-go zone is physically established, marked, and maintained throughout the work
- A Spotter Duties for Overhead Dangers SWMS covering the appointed spotter's positioning, communication method with the excavator operator, and stop-work authority
- A Mobile Plant SWMS covering the excavator and concrete pump truck operations, including boom height awareness, exclusion zone compliance, and plant operator responsibilities
- Formal notification to the network operator prior to work commencing, with written confirmation of their requirements
- A site-specific risk assessment identifying the line voltage, span locations, proximity to the excavation, and specific control measures for this site
- A toolbox talk record for each day the work is occurring near the lines
- An emergency response plan with the network operator's emergency contact number and the procedure for line contact
This combination ensures that the overhead line risk is addressed at every level — the exclusion zone, the plant operations, the spotter role, and the emergency response — with clear documentation for each.
Frequently asked questions
Is working near overhead power lines a HRCW trigger?
Yes. Under the model WHS Regulations, work near energised electrical installations or services is a category of High Risk Construction Work. A SWMS must be prepared and followed before this work commences on a construction project. The trigger is based on proximity to energised lines, not on the intent to contact or work on them. Where any part of the work — including plant movement, material handling, or EWP operations — could bring people or equipment near overhead conductors, the SWMS requirement applies.
What is the no-go zone distance for overhead power lines?
Minimum approach distances vary by jurisdiction, line voltage, and the requirements of the individual network operator. As a general guide, a 3-metre exclusion zone is commonly applied for low-voltage lines in many jurisdictions, with significantly greater distances required for high-voltage and transmission lines. These figures are not uniform across Australia — the relevant electrical safety regulator and network operator for the site location should always be consulted before work commences. Do not rely on general figures for site planning without confirming the specific requirement.
Do I need permission from the network operator before working near power lines?
In most cases yes. Where work will bring people, plant, or materials into proximity with overhead power lines, the network operator should be notified before work starts. Depending on the proximity and the nature of the work, the operator may require a formal permit, a written consent, confirmation of the approach distances to be maintained, line de-energisation, or the installation of physical insulating covers. Starting work without contacting the operator where required is a significant safety and legal risk. Contact the network operator early in the planning stage — de-energisation requests, in particular, may require several weeks' notice.
Can one SWMS cover all work near overhead power lines?
A general overhead power lines SWMS provides an important foundation and should be prepared for any job where this hazard is present. However, it will rarely cover every activity on a complex job. Where a spotter has been appointed, where mobile plant is operating, or where an EWP is being used near lines, each of those activities involves specific hazards and controls that benefit from their own dedicated document. Purpose-built SWMS for spotter duties, mobile plant, and EWP operations work alongside the overhead power lines SWMS to ensure that every role and activity has clear, task-specific guidance that workers can refer to during the work.
Need help choosing the right SWMS?
The right SWMS set for your overhead power line work will depend on the activities involved, the plant on site, the proximity to the lines, and the network operator's requirements. Browse the individual SWMS products below or use the links to find out more.
Overhead power line SWMS:
- Work Near Overhead Power Lines SWMS
- Working Near Overhead Power Lines No-Go Zones SWMS
- Spotter Duties for Overhead Dangers SWMS
- Vegetation Management Near Power Lines SWMS
Plant and equipment SWMS:
Not sure which combination is right for your job? Use the SWMS selector to find products based on your trade and tasks, or work through the WHS self-check to identify gaps in your current documentation.
This guide provides general information only and does not replace project-specific risk assessment, legal advice or consultation with the relevant WHS regulator or network operator. Duty holders should assess the actual work, site conditions, line voltage, applicable approach distances, and state or territory requirements before selecting or using a SWMS. Always contact the relevant network operator before commencing work near overhead power lines.