Underground power at your property
It is important to always take care around green domes
Properties with underground power are connected to the electricity network through a service pillar or ‘green dome’, located just inside the property boundary. This green dome contains live electrical wires so should be treated with a high degree of caution, particularly when performing work nearby. There are some key points to remember:
- The area above and around a green dome should be kept clear to allow for authorised access, including a 500mm exclusion zone around the base of the unit.
- Horizon Power requires access to the green domes at all times. With this in mind, please keep shrubbery well away, and ensure that access to the green dome is maintained and free from obstructions. The ground level should not be raised to a level where the green dome is buried.
- If you make contact with a green dome or notice any damage, please contact Horizon Power immediately on 13 23 51. Do not touch a damaged dome and ensure the area is isolated so other people are aware of the danger before Horizon Power crews attend the site.
Know where the underground cables are on your property
In areas with underground power, even though cables are out of sight, it is important to keep in mind they can be very dangerous if accidentally struck or damaged. It is essential to carefully plan any works in your front yard and proceed with caution where underground electrical assets exist. Not only can it be costly if underground cables are damaged, hitting these cables can cause significant property damage as well as injury or even death.
The cable that runs from the service pillar or ‘green dome’ to your meter box is called your consumer main. This cable is located at least 500mm below ground. In most properties you can determine the location of this cable by checking your meter box for a diagram. If the location of your consumer main is not shown in your meter box, you should consider hiring a qualified electrician to determine the location for you. The consumer main is privately owned by the property owner and therefore is not shown on Dial Before You Dig plans. However, other utilities’ cables running through the property could be shown so always check Dial Before You Dig plans before proceeding with any works.
Distribution network cable
The cable connecting the green dome to the network is called a distribution network cable. This cable runs anywhere outside your property boundary (including in the council owned verge) and is located at least 850mm below ground.
Main network cable
The cable that runs along the street and attaches to the network is called a main network cable. These run along the street on the side of the road (usually in the council verge area on either one or the other side of the road) and are located at least 850mm below ground. If you are doing work around the boundary of your property it is important to get a licensed surveyor to peg the boundary to ensure you do not go past this line or hit any underground cables that may lie just outside the boundary.
Use the four P's when planning works
If you plan on doing any work in the front yard of your property, always follow the four P’s to ensure you carry your work out safely without hitting any underground cables. The four P’s include:
Always plan your job before proceeding with any work. The following steps can help.
- Check your meter box for the location of the consumer main on your property.
- If your meter box does not show this, hire a licenced electrician to do this work (this cable is owned by the property owner).
- If you plan on doing work near the edge of your boundary, always hire a licenced surveyor to peg your boundary line to ensure you do not excavate past this.
- If you intend to do work outside your property line, use the Dial Before You Dig service at least two business days before your job is due to begin to ensure you have the correct information you need to carry out a safe project.
- Your consumer main will not show on Dial Before You Dig plans as it is a privately owned asset.
Potholing (hand digging) with caution is a method to assist in establishing the exact location of all underground infrastructure.
Protecting and supporting the exposed infrastructure is the responsibility of the excavator. Always erect safety barriers in areas at risk to protect underground networks.
Proceed only when you have planned, potholed and put the protective measures in place.