Overhead or underground power: which is right for your Central Coast property?
Cheaper and quicker versus tidier and storm-proof. How to decide, and what each option costs on the Coast.
Read the guide →
Level 2 ASP service
Consumer Mains Upgrade & Replacement on the Central Coast
Mains too small for the loads you're adding? We replace and upgrade consumer mains across the Central Coast, overhead or underground.
5.0/5 Google6 Google reviews
ASP AccreditedAll 4 Ausgrid categories
$20M LiabilityPublic liability cover
24/7 EmergencyResponse in 30-60 min
Central CoastGosford to Budgewoi
What is consumer mains upgrade?
Consumer mains are the cables between the point of attachment on your pole or pit and your main switchboard. In Central Coast homes built before the early 90s these are often undersized 6mm or 10mm cables that can't safely handle modern loads - EV charging, ducted air-conditioning, pools, and solar export. Replacing them is Level 2 ASP work.
When you need it
- Installing an EV charger and the circuit keeps tripping or your sparky says the mains won't cope.
- Adding solar and the retailer requires the mains to be upgraded before export is permitted.
- A renovation adding ducted A/C, an induction cooktop or a pool pump.
- An Ausgrid defect notice flagging the mains as non-compliant.
- Older insulation that's perished or visibly damaged.
Our process
On-site assessment
We measure existing cable size, run, attachment condition and load requirements.
Overhead or UD decision
Together we decide whether to stay overhead or go underground - we'll cover the pros and cons on site.
Written quote
Fixed quote covering cable, brackets, trenching if UD, testing and notifications.
Installation
New mains run, terminated at the POA and the switchboard, with temporary supply if needed.
Energise & certify
Tested, energised via Ausgrid and certified with your CCEW.
What's included
- Correctly sized mains cable for your loads (16mm, 25mm or larger)
- Overhead or UD installation with weatherproof termination
- Main switch upgrade if required
- Ausgrid notifications and energisation
- CCEW certificate on completion
Compliance & paperwork
NOSW + EWR lodged with Ausgrid, CCEW issued, plus any required Notice of Suspected Defect cleared.
Across the Central Coast
Consumer Mains Upgrade across the Coast
We deliver consumer mains upgrade to homes, builders and commercial properties across the Central Coast. From Peninsula suburbs like Woy Woy and Umina through the Gosford CBD, Erina and the beaches, up to the Lakes district and Budgewoi.
See some of our most common service areas:
Common questions
Frequently asked
How do I know if my mains are undersized?
Any circuit trips when multiple large appliances run, visibly old cable with cracked insulation, or an electrician recommending an upgrade before adding a new circuit. We'll confirm on the free site visit.
Overhead or underground - what's better?
UD is tidier and safer from tree strike, but trenching is more expensive. Overhead is cheaper and quicker; we often recommend it for straight, clean runs.
Will I need to upgrade my switchboard too?
Sometimes. If the existing board is an old ceramic-fuse unit it's likely unable to accept the larger mains and won't have RCDs. We'll quote both together if it's required.
How long will I be without power?
Typically 2-4 hours for overhead; UD work can usually stay connected until the final changeover.
Read before you book
Guides that answer the common questions
Do I need three-phase power for a home EV charger?
Usually not. The honest breakdown of when single phase is fine, when it is not, and what a three-phase upgrade involves.
Read the guide →
Renovating on the Central Coast? Six points where your sparky has to call in a Level 2
Plan for these before the builder starts and you avoid the classic mid-reno stall waiting for a Level 2.
Read the guide →
Related services
You might also need
Smart Meter Installation
New meter required? Solar export locked out? We do smart meter installs across the Coast - usually within 5 business day
Learn moreSwitchboard Upgrades
Old fuse board, nuisance tripping, adding solar or EV? We upgrade Central Coast switchboards to full RCD compliance.
Learn moreMetering Upgrades / 3-Phase
Need more grunt? We upgrade Central Coast homes and workshops from single phase to three phase, including the full meter
Learn moreLevel 2 job on your plate? Let's sort it.
Call directly or send a photo of your defect notice, pole or switchboard for a fast indicative quote.