Short answer: a standard single-phase upgrade, ceramic fuses to a labelled RCBO-protected board with a compliance certificate, is usually a same-day job and the most affordable scenario. The price climbs with three-phase boards, asbestos-backed panels, meter relocations, mains upgrades and fault-finding on old circuits. Quotes vary because boards vary, so ask for a fixed written price that lists board size, RCBO count and certification.
What a proper upgrade includes
- New enclosure with labelled circuits you can actually read
- RCBO protection, combined overload and safety-switch protection per circuit
- Mains isolation, surge protection where specified, and tidy cable terminations
- Full testing to AS/NZS 3000 and a certificate of testing and compliance
If a quote doesn't mention RCBOs, labelling and a certificate, it isn't a complete upgrade. It's a board swap with the paperwork missing.
What moves the price
| Factor | Why it matters |
|---|---|
| Single vs three phase | Three-phase boards are bigger, with more protection devices and testing. Common in larger homes, workshops and houses with ducted air con. |
| Board condition | Asbestos-backed panels need licensed removal. Rusted enclosures or brittle mains may need replacing too. |
| Circuit count | More circuits means more RCBOs and a larger enclosure. Solar, batteries and EV chargers each add circuits. |
| Faults uncovered | Old boards hide degraded insulation and borrowed neutrals. Finding and fixing them is part of doing the job safely. |
| Metering and mains | Relocating the meter box or upgrading undersized consumer mains adds distributor and labour steps. |
Do you actually need one? Five signs
- Ceramic rewireable fuses instead of breakers
- No safety-switch protection on power-point circuits
- A board that's hot, buzzing, or smells warm
- Tripping that keeps coming back, or circuits with no spare ways for solar, battery or EV
- Insurance or pre-purchase reports flagging the board
How long does it take?
Most standard single-phase upgrades are done in half a day to a day, including testing and certification. Power is off during the changeover, so plan for the fridge and the home office. We map and label every circuit before we leave.
Related reading: emergency callout costs (old boards cause most of them), and our switchboard upgrade service page.
A standard single-phase upgrade from ceramic fuses to a labelled RCBO-protected board is typically the most affordable job; three-phase boards, asbestos-backed panels, meter relocations and mains upgrades add to the price. Ask for a fixed written quote that lists the board size, number of RCBOs and whether a compliance certificate is included.
Likely yes if you still have ceramic rewireable fuses, no safety switches on power-point circuits, a hot or buzzing board, frequent tripping, or no room for new circuits like solar, batteries or an EV charger. A licensed electrician can assess the board in one visit.
They protect against different hazards. A circuit breaker protects cable and equipment against overload; a safety switch (RCD) protects people against electric shock by cutting power in milliseconds when current leaks. Modern upgrades use RCBOs, which combine both in one device per circuit.
Yes — a switchboard upgrade is notifiable electrical work in Queensland, so your contractor must test it against the Wiring Rules and issue a certificate of testing and compliance. Keep it with your property paperwork.