Safety Switches: The Law, The Risk, The Fix
A safety switch (RCD — residual current device) cuts power within 30 milliseconds when it detects an earth leakage fault — fast enough to stop someone being electrocuted. Queensland law requires every home to have safety switches on power circuits at point of sale, before lease, and before renovation work. Many older Hervey Bay homes have only ONE safety switch covering only the power circuits — leaving lighting, oven, hot water and air-con totally unprotected.
Modern best practice (and AS/NZS 3000:2018 requirement on new installations) is per-circuit RCD protection — every single circuit in the switchboard gets its own RCBO (combined circuit breaker + safety switch). When something faults, only that circuit trips, not your whole house. And every appliance circuit is properly protected. Our Sparky retrofits per-circuit RCBOs into existing Hervey Bay switchboards as a standalone job, or as part of a full switchboard upgrade.
We use Clipsal MAX9, NHP DOMAE and Hager 6kA RCBOs — all Australian-tested, all 30mA Type AC or Type A as required, all backed by full warranty. We test every installed device with a calibrated RCD tester (trip time + trip current) and provide a written test certificate for your records.
Our Services
Per-Circuit RCBO Retrofit
Replace standard circuit breakers with combined RCBOs (breaker + RCD in one) so every circuit gets individual safety switch protection. The modern standard.
Safety Switch Upgrade for Sale or Lease
Bring your Hervey Bay property up to current QLD safety switch requirements before sale or new lease — we know exactly what's needed.
Sub-Board Safety Switch Installation
Install RCDs on outbuilding, granny flat or shed sub-boards for proper protection across the whole property.
Type A RCD Installation (EV chargers, solar)
Type A RCDs required for circuits feeding modern electronic equipment — EV chargers, inverters, induction cooktops, variable speed pool pumps.
RCD Testing & Compliance Certificate
Calibrated trip-time and trip-current testing of every RCD with a written compliance certificate. Insurance and conveyancers love this.
Why Choose Our Sparky?
- Per-circuit RCBO specialists — modern best practice, not the old 'one RCD covers everything' approach
- Calibrated RCD tester used on every install — written test results provided
- Clipsal, NHP and Hager — Australian-tested 6kA-rated devices only
- Compliant with AS/NZS 3000:2018 and QLD legislation
- Fully licensed Queensland electrical contractors (LIC1509719)
- Fixed-price quotes — no surprises
Frequently Asked Questions
- Do I need to install safety switches on every circuit in my Hervey Bay home?
- Queensland law requires safety switches on power circuits before sale, lease or renovation. AS/NZS 3000:2018 requires every circuit in NEW installations to have RCD protection. Best practice (and what we recommend) is to retrofit per-circuit RCBOs so every circuit — power, lighting, oven, air-con, hot water — is properly protected.
- How much does safety switch installation cost in Hervey Bay?
- A single RCBO retrofit on an existing switchboard runs $180-$280 per circuit installed. Full per-circuit upgrade on a typical 8-12 circuit Hervey Bay switchboard runs $1,800-$3,200 (cheaper as part of a switchboard upgrade).
- Will my old Hervey Bay switchboard fit modern RCBOs?
- Most switchboards from 1990 onwards will accept current RCBOs with minor modifications. Older fuse boards and very tight switchboards may need upgrading first — we'll tell you upfront after a free site visit.
- What's the difference between a circuit breaker and an RCBO?
- A circuit breaker protects against overloads and short circuits (electrical faults that could cause fires). An RCBO does both AND adds earth-leakage protection (which protects YOU from electrocution). Modern installs use RCBOs for everything.
- Do I need Type A RCDs for my EV charger or solar inverter?
- Yes — Type A RCDs (which respond to DC residual currents as well as AC) are required by AS/NZS 3000:2018 for circuits feeding EV chargers, solar inverters, induction cooktops and other modern electronic equipment. Standard Type AC RCDs are NOT compliant for these uses.
Need safety switches installed in Hervey Bay? Call Our Sparky today.