Underground Cable & Mains Checks

If your home has underground cabling or ageing mains lines, it’s worth checking they’re still safe, stable, and up to standard. Damaged or deteriorating underground cables can lead to power loss, safety issues, or expensive emergency callouts — and in many cases, you won’t know there’s a problem until something goes wrong.
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Why check your underground cables and mains?

Underground cables are out of sight — but they shouldn’t be out of mind. Over time, moisture, soil movement, poor joins, or DIY work from decades ago can cause joints to fail or insulation to break down. A proactive check can catch small issues before they become big (and costly) ones.

Checking your mains and underground cabling means:

  • You reduce the risk of outages and electrical faults
  • You prevent future digging or emergency repair costs
  • You ensure your incoming power is safe and up to code
  • You get peace of mind, especially in older properties or rural areas

When should you check your underground cables and mains?

It’s a good idea to test underground cables or mains if:

  • You’ve noticed power flickering, surging, or cutting out
  • You’re planning to dig or landscape near where cables are buried
  • Your home has old incoming mains lines or pole-to-house feeds
  • You’re upgrading your switchboard or adding high-load items like EV chargers
  • You’ve bought a property with unknown or undocumented cabling

Many faults develop slowly and can be traced early — long before they cause major disruption.

My approach

I use professional testing tools to assess the condition of underground cables and joints, as well as visual inspection of mains lines and terminations. If needed, I’ll help locate faults without unnecessary digging or damage. You’ll get honest, practical advice based on what I find — and if everything’s in good shape, I’ll say so.

What to expect

A typical underground or mains line check may include:

  • Testing cable continuity and resistance
  • Locating weak or failed underground joins
  • Inspecting mains cable terminations for rust, damage, or strain
  • Checking switchboard entry points and earthing
  • Advising on safety, repairs, or replacements if needed

If a fault is found, I’ll provide options — whether it’s a simple joint repair, rerouting, or full mains replacement.

Frequently asked questions

Customer reviews

★★★★★

Thang You Xiang

"Josh was incredibly helpful and maintained clear communication throughout the project. He quickly identified the problem with our house's electrical system and was able to solve it on the same day. I wouldn't hesitate to recommend Josh to anyone in need of electrical services. He's professional, efficient, and truly goes above and beyond for his clients. Thanks again, Josh!"

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Underground cables and mains lines might be out of sight, but they shouldn’t be ignored. If you’re experiencing issues — or just want a professional check before a renovation or upgrade — get in touch. I’ll take a look and help you move forward with confidence.

    My services

    Switchboard Upgrades

    When it comes to electrical safety and long-term peace of mind, your switchboard is one of the most important parts of your home. It’s the heart of your electrical system — and if it’s outdated, overloaded, or showing signs of wear, it might be time to consider an upgrade.

    Electrical Home Assessments

    When it comes to keeping your home safe and future-ready, an electrical home assessment is one of the most valuable things you can do. Whether you’re buying, renovating, or simply unsure about the state of your wiring, a professional inspection can give you clarity, peace of mind, and practical next steps — without the guesswork.

    LED Lighting Upgrades

    Lighting plays a big role in your home’s comfort, energy efficiency, and safety — and upgrading to LED is one of the simplest ways to improve all three. Whether you’re replacing old halogens, starting a renovation, or just want to lower your power bill, modern LED lighting offers long-term savings and a better lighting experience.

    SmartVent Installation

    Good ventilation is essential for a healthy, comfortable home — but it’s often one of the most overlooked parts of the house. Whether you’re dealing with condensation, mould, damp air, or stuffy rooms, the right ventilation system can make a big difference to your indoor air quality and overall wellbeing.

    Power & Lighting Installations

    From extra power points to new light fittings, I handle the day-to-day electrical work that keeps your home running safely and smoothly. Whether you’re refreshing a room, upgrading fixtures, or just need a few changes to make your space more practical, I’m here to help with reliable, professional service.

    Earthing Checks

    A safe home starts with proper earthing — and yet, it’s one of the most overlooked parts of residential electrical safety. Good earthing protects you, your appliances, and your property by safely carrying fault current away when something goes wrong. If your earthing is damaged, missing, or outdated, you could be at serious risk without even knowing it.

    Safety Compliance Checks

    Electrical safety isn’t just about fixing what’s broken — it’s about making sure everything is up to standard, working as it should, and safe for everyday use. Whether you’re planning a renovation, selling your home, or just want peace of mind, a safety compliance check is a smart way to ensure your electrical system is reliable and legal.

    Diagnosing Electrical Faults

    When something’s not working right, it’s not always obvious what’s causing the problem — that’s where fault diagnosis comes in. Whether it’s flickering lights, tripping breakers, or outlets that suddenly stop working, diagnosing faults is about finding the root cause quickly, safely, and with as little disruption as possible.