Mains Power Upgrade for Increased Load
Mains Cable Replacement Hamilton
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Mains Cable Replacement for Homes & Businesses
If your property has an old, damaged, or undersized mains cable, replacing it is critical for electrical safety, compliance, and reliability. Alectrics provides professional mains cable replacement services for residential and commercial properties, ensuring your power supply meets current New Zealand standards.
Signs Your Mains Cable May Need Replacing
You may need a mains cable replacement if you notice:
Cracked, brittle, or exposed insulation
Flickering lights or voltage drops
Power tripping under load
Burn marks or corrosion near the cable
An older rubber, VIR, or lead-sheathed cable
Recent electrical upgrades (EV charger, heat pump, induction cooktop)
Insurance or compliance concerns
Older homes and properties with increased electrical demand are especially at risk.
Residential & Commercial Mains Cable Replacement
We carry out mains cable replacement for:
Older homes and renovations
Villas, bungalows, and 1950s–1980s houses
New builds and rebuilds
Minor dwellings and sleepouts
Commercial buildings and workshops
Food trucks and mobile units
Each installation is tailored to the property’s power requirements.
Mains Cable Replacement FAQs
How long does mains cable replacement take?
Most mains cable replacements are completed within one day, depending on site conditions and whether lines company coordination is required.
Can an old mains cable affect insurance?
Yes. Non-compliant or deteriorated mains cables can cause insurance issues in the event of an electrical fault or fire.
How much does a mains cable replacement cost?
The cost of replacing a mains cable depends on several factors, including:
Cable length and size
Overhead vs underground installation
Site access and trenching requirements
Load upgrades and switchboard changes
Lines company involvement
We provide clear, upfront pricing following an on-site assessment.
How much does a mains connection or upgrade cost?
Costs vary depending on the size of the supply, whether lines need to be undergrounded, and the complexity of the installation. Alectrics provides clear, upfront quotes so you know exactly what to expect.
Who is responsible for the mains cable?
Responsibility for the mains cable can vary depending on the property and connection point. In many cases, the property owner is responsible for the cable from the point of supply to the switchboard.
We can assess your setup and confirm responsibilities before any work begins.
Book a Mains Cable Inspection
If you’re concerned about the condition of your mains cable or planning an electrical upgrade, Alectrics can help.
Contact us today to book a mains cable inspection or replacement.
