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Increase medium commercial connection

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Who is this for?

For commercial properties who want to upgrade the electricity supply to a maximum demand greater than 250A/180kva but no greater than 1300A/1000kVA.

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How long will it take?

3 months to provide you with a technical assessment.

7 -9 months to provide you with a design and quote, depending on the complexity of your project.

3 months to construct, upon payment of quote and confirmation your site is ready.

Timeframes indicative only and subject to change based on demand.

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How much will it cost?

We'll provide a quote after we complete the scoping and design of your project.

Application process

You’ve applied

We’ll contact you to discuss your application.

You’ll receive a scope

After our technical assessment we’ll confirm the scope of works with you.

You’ll receive design fee invoice

Once payment is received, we will design the project to your needs.

You’ll receive a quote for the delivery of the works

After the acceptance and payment is received, we’ll schedule the works for delivery. Schedules are dependent on your location and the complexity of our work.

Let us know how we went

Your feedback is importance to help ensure we’re meeting your needs and expectations.

What to include with your application

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A CAD site plan

Your CAD plan helps us better understand your work site and location of assets. We extract data from your plan to assist us with your design.

For a CAD site plan to be accepted, it must clearly show:

  • the proposed pillar location in a visible colour on the site plan.
  • the street name on which the property borders
  • the full address of the property
  • the nearest intersection (for rural properties it helps to locate the site)

In order to provide a fast, accurate quote and advice on your new connection arrangement we require a comprehensive site plan with details of your current and/or proposed site layout. This includes but is not limited to the following information being clearly marked on your plan:

  • boundary or retaining walls at the side and front of the property – including depth of wall
  • location of items such as letterboxes, garden beds, trees/stumps, driveways, crossovers
  • detail or grades of any major inclines or slopes near the front boundary
  • utility locations for water meters/pipes, gas pipes, sewer mains/connections and access points
  • proposed location of new pillar/s

Example site plan

Example CAD site plan for a commercial connection

Pillar exclusion zone

The pillar needs to have an exclusion zone of 50cm from its centre. Inside or under the exclusion zone there must not be any:

  • water pipes, water storage facilities or water meters
  • gas pipes or meters
  • telecommunication cables
  • sewage, waste water, or storm water pipes
  • reticulation pipes or cables
  • tree roots and other vegetation
  • concrete, asphalt, limestone or bedrock

Find out what underground assets may be in the vicinity by submitting a Dial Before You Dig application.

Illustration showing 500mm exclusion zone between the pillar and the lot and street boudaries.

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Site photos

Help us understand your current connection arrangements and more easily identify potential site specific issues. Photos will need to include:

  • The extent of the worksite
  • Any obstructions in the area

Site photos help us understand your current connection arrangements and more easily identify potential site specific issues. If you’re able to supply us with a close up and wide photos it will potentially reduce application times as we won’t be required to visit the site.

Example close up photo

A close up picture of the proposed pillar installation site or overhead connection that shows the pegged property boundary and the proposed location.

Example wide photo

One picture showing 3m into every direction of proposed pillar location.

One picture showing 3m into every direction of proposed pillar location.

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Single line diagram

The single line diagram provides us with the technical information to design a connection to meet your requirements.

In your single line diagram, you'll need to include:

  • mains size
  • number of cables per phase
  • service protection device (SPD) setting and rating
  • metering types
  • metering quantity.
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Load breakdown

Your load breakdown allows us to assess the impact your project will have on the network. It also allows us to apply the appropriate charging policy.

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Disturbing loads

The information allows us to check the impact of your loads on the network.  You must comply with Power Quality limits as per AS/NZS 61000.3.11, SA-SNZ TR IEC 61000.3.14 and Western Power Technical Rules.

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Statement of compliance to AS61000.3.6

Your accredited electrical contractor or consultant must submit a statement verifying that the installation complies with AS/NZS 61000.3.11, SA-SNZ TR IEC 61000.3.14 and Western Power’s Technical Rules.

Ready to apply for an increase to a medium commercial connection?

Once you’ve gotten the above, you are ready to apply.