Yes, surge protection is strongly recommended for every Australian home, especially if you have expensive electronics, solar systems, or live in a storm-prone area. A whole-of-home surge protector installed in your switchboard costs $300 to $700 and protects all your appliances and electronics from voltage spikes caused by lightning, grid switching, and power fluctuations.
Overview
Power surges — sudden spikes in voltage — can damage or destroy sensitive electronics including computers, TVs, home automation systems, solar inverters, and appliances with electronic controls. Surges can be caused by lightning strikes (even nearby ones), switching on the electricity grid, or faults in the power supply. Standard power boards offer minimal protection compared to a whole-of-home surge protection device (SPD) installed at your switchboard, which guards every circuit in your home simultaneously. For Australian homes with solar panels, the risk is even higher as solar systems can act as a pathway for lightning-induced surges.
When you need this service
- ✓You have expensive electronics, computers, or a home office setup
- ✓You've installed a solar system or battery storage that needs protecting
- ✓You live in a region prone to electrical storms and lightning (e.g. northern Queensland, Top End)
- ✓You've experienced damage to electronics or appliances from power surges before
- ✓You want comprehensive protection beyond what power board surge protectors offer
How it works
- 1
Assessment
The electrician assesses your switchboard, identifies the level of surge protection required (Type 1, Type 2, or Type 3), and checks that your earthing system is adequate.
- 2
SPD Installation
A surge protection device is installed in your switchboard, connected across the active, neutral, and earth conductors. For solar systems, additional SPDs may be installed at the inverter.
- 3
Earth System Verification
The effectiveness of surge protection depends on good earthing. The electrician tests your earth resistance and upgrades the earthing system if necessary.
How much does it cost?
Whole-of-home surge protection installation in Australia costs $300 to $700, including the surge protection device and labour. A basic Type 2 SPD suitable for most residential switchboards costs $300 to $500 installed. A higher-rated Type 1+2 combination device (recommended for lightning-prone areas) costs $500 to $700. Additional SPDs for solar inverters or data lines cost $150 to $300 each. Commercial surge protection installations, which may require multiple SPDs across several distribution boards, range from $800 to $3,000.
Australian regulations
Surge protection devices in Australia must comply with AS/NZS 1768 (Lightning protection) and AS/NZS 4046 (Surge protection). While whole-of-home surge protection is not yet mandatory for existing residential properties under AS/NZS 3000 (Wiring Rules), it is increasingly recommended and may be required in certain commercial installations. The effectiveness of SPDs depends on compliance with earthing requirements in AS/NZS 3000 Section 5 — inadequate earthing renders surge protection ineffective. All installation must be performed by a licensed electrician.