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No Go Zones

What are they? No Go Zones (NGZ) are defined distances for safety clearances surrounding overhead and underground electricity assets.


NGZ Access Authority System

 AusNet Services operates a NGZ access authority system that prohibits all non VESI (Victorian Electrical Supply Industry) or 'ordinary' persons from accessing and working on or near any part of the asset or in the vicinity of the asset without an appropriate permit in accordance with the NGZ Guidelines when third parties contact a Major Electricity Company (MEC) for advice.

To find out more about No Go Zones, visit Victorian Electricity Supply Industry (VESI) or Energy Safe Victoria.  

Authorities given specify minimum distances that people and equipment can work near overhead and underground electricity assets, and also provide guidance on the process to be followed where these clearances cannot be met. Equipment includes cranes, excavators, concrete pumpers, elevated work platforms (including scissor lifts) and scaffolding.

After making contact with us or our representative, a person or company will require either written advice or a Permit to Work before starting work near electricity overhead or underground networks. We’ll only issue written advice or a Permit to Work after we’ve visited and assessed the work site.

NGZ site visit requests for AusNet Electricity Services (Distribution)

To progress your NGZ request, you'll need to contact our representative, Extec Services. This includes requests for:

  • Underground
  • Overhead and
  • High Loads/Oversize Loads

Extec Services will manage all aspects of your No Go Zone request and arrange to conduct a visit of your site.

Extec Services can be contacted by:
Email -
Phone – (03)59417333

NGZ process and timeframes

No Go Zone request


Approximate lead time for a site visit

  • Up to 5 working days for site visit. Customers contacted within 48 hours for appointment

Permit to work assessment and issue.

  • LV permits no switching can be issued at site visit. Up to 5 working days for site visit. Customers contacted within 48 hours for appointment

  • Any HV permits for suppression minimum 10 working days.

  • Any permits requiring supply interruption minimum 20 working days

No Go Zone process for typical situations such as supply shutdowns/isolations

  • Up to 5 weeks (requires 18 working days for Network Operations)

Requests for protective warning methods such as fitting of tiger tails or insulating mats

  • Up to 5 weeks for the management and completion of requests

Requests for protective Visual warning methods such as No Go Zone flagging, warning signs

  • Up to 5 weeks for the management and completion of requests

Indicative costs for No Go Zone Services

All costs are subject to variation and will vary on a case by case basis depending on Work requirements. Indicative costs do not include additional services including but not limited to; Traffic Management Services, Council, VicRoads Permits.

Visual warning methods such as tiger tails and flagging

Service type:

Minimum charge:

Installation of Tiger tails (covers)


Installation of Flagging



Electrical Shutdowns, Isolations, Safety Observer

Service type:

Minimum charge:

Supply shutdown of Network


Isolation of Services


Hold Electrical Power poles


Safety observer


NGZ site visit requests for AusNet Transmission Group

To progress your NGZ request where high voltage overhead or underground transmission lines are involved, you will need to contact our Line Assets Easements Group to a arrange approval of the proposed works and obtain written authorisation which may include a Permit to Work.

Email -

Phone – 1300 360 795


Download our handy guide for more details on Living with Transmission Line Easements