Surge Protection — Why Every Wide Bay Home Needs It
Most people do not think about power surges until something expensive stops working. That flat-screen TV, the fridge, the home office computer — all of it is more vulnerable than you might realise. And in the Wide Bay, where summer storms roll in fast and the power grid takes hits from lightning, cyclones, and switching events, surge protection is not a luxury. It is a necessity.
Most people don't think about power surges until something expensive stops working. That flat-screen TV, the fridge, the home office computer — all of it is more vulnerable than you might realise. And in the Wide Bay, where summer storms roll in fast and the power grid takes hits from lightning, cyclones, and switching events, surge protection isn't a luxury. It's a necessity.
Here is what you need to know about protecting your home and appliances.
What actually causes a power surge?
A power surge is a brief spike in voltage that exceeds the normal flow of electricity in your home. The most dramatic cause is a lightning strike nearby — that can send hundreds of thousands of volts through power lines in an instant. But surges happen more often from everyday events:
- Grid switching — when the electricity network switches load or restores power after an outage
- Large appliance cycling — fridges, air conditioners, and pumps drawing heavy current can create small surges when they kick on and off
- Internal wiring issues — faulty wiring or shared circuits can cause voltage fluctuations inside your own home
Even small, repeated surges — the kind you never notice — slowly degrade electronics over time. That is called "electronic rust," and it's why a TV that's worked fine for years can suddenly die for no obvious reason.
The two levels of protection
1. Surge-protected power boards
2. Whole-home surge protection (Type 2 SPD)
This is the level of protection that actually safeguards your home. Combined with individual power boards for sensitive electronics, it gives you overlapping defence.
What does it cost to install Type 2 SPD?
A whole-home surge protector installed in your switchboard typically costs between $250 and $400, including parts and labour, depending on your switchboard type. That is a one-off cost to protect thousands of dollars worth of appliances and electronics. Compared to replacing a fridge, television, or air conditioner compressor, it pays for itself the first time a decent surge hits.
Do I need surge protection if I have RCDs?
Yes — they do different jobs. An RCD (safety switch) protects people from electric shock by cutting power when it detects current leaking to earth. A surge protector protects your appliances from voltage spikes. You need both, and they work alongside each other in your switchboard.
Surge protection in the Wide Bay
Living in the Wide Bay means we get our share of electrical storms, especially through spring and summer. Coastal areas near Bundaberg, Hervey Bay, and Maryborough see regular lightning activity. Combine that with an older home that may still have original switchboard wiring, and the risk goes up significantly.
Any home built before 2018 is unlikely to have whole-home surge protection as standard — it wasn't required under the previous wiring rules. Since the 2018 AS/NZS 3000 amendment, new builds and major renovations must include Type 2 SPD protection. If your home is older, it's worth having an electrician take a look.
Quick tips
- Check whether your switchboard has a surge protection device (it will be labelled or your electrician can identify it)
- For sensitive electronics, use quality surge-protected power boards with built-in circuit breakers — not cheap extension cords
- If you lose appliances during a storm or after a power outage, that is a sign your home needs better protection
- Have an electrician assess your setup — especially if you work from home, have medical equipment, or invested in new appliances recently
Need an electrician in the Wide Bay?
Core Services Electrical & Air provides licensed electrical and air conditioning services across the Wide Bay. Residential and commercial — fully insured, no call-out fee.
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