This article outlines what UV damage looks like, the risks it poses, and what steps you should take if you suspect your system is affected.

What Is UV Electrical Damage?

UV (ultraviolet) radiation from the sun gradually breaks down the protective sheath that covers external electrical cables. When this insulation deteriorates, the underlying conductors become exposed, increasing the risk of faults, fire, or electric shock.

This type of damage often affects overhead service lines that run from power poles to your home, especially on older properties with cables installed decades ago.

Signs of UV Damage

Common indicators include:

• Cracked or flaking insulation on power cables
• Exposed copper conductors
• Discolouration or brittleness of the cable surface
• Notices from the network provider about unsafe cables

UV damage isn’t always visible from the ground, which is why professional inspection is important.

Risks of Ignoring the Problem

Damaged cables compromise safety and can result in:

• Electrical fires
• Electric shock hazards
• Power outages
• Defect notices from Ausgrid or Endeavour Energy

If a network inspector identifies UV degradation, you may be given a limited timeframe to fix it before your power is disconnected.

How to Fix It Safely

Only a Level 2 Accredited Service Provider can legally repair or replace UV-damaged cables in NSW. They’ll assess the extent of the damage and either re-insulate the lines or replace them entirely to meet safety standards.

Selectrical has extensive experience in identifying and rectifying UV-related electrical issues quickly and compliantly.

Prevention and Maintenance

• Book routine inspections, especially for homes over 15 years old
• Upgrade overhead cables with UV-resistant insulation
• Replace any visibly deteriorating cables promptly

Reference : Private Power Pole service, Electrical Defect Notice, NSW Energy: Power supply safety guidelines

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