Your switchboard is the heart of your home's electrical system — and one of the most ignored bits of it. Most people only think about it when something goes wrong.
Here's how to tell if yours is overdue for an upgrade.
1. You Still Have Ceramic Fuses
If your board has the old-style porcelain fuse holders with bits of wire inside, it's old — probably 1960s–1980s. These boards have no RCD safety switches and can't handle modern loads like heat pumps, induction cooktops, or EV chargers.
Verdict: upgrade. Today's standards are dramatically safer.
2. There Are No RCDs
Modern boards have RCDs (residual current devices) or RCBOs on every circuit. These trip in milliseconds if there's a fault that could electrocute someone — like a faulty appliance or a child sticking something into an outlet.
If you can't see any "Test" buttons on your switchboard, you don't have RCD protection. That's a serious safety gap.
Verdict: upgrade — even an RCD retrofit is worthwhile if a full board change isn't on the cards.
3. Breakers Keep Tripping
Occasional tripping is fine — it's the system doing its job. But if a circuit trips repeatedly, especially when you turn on the same appliance, something is overloaded or faulty.
If it's just one circuit, sometimes the fix is just adding a new dedicated circuit. If your board is full and can't take any more circuits, you're looking at an upgrade.
Verdict: investigate first. Often an upgrade is the right answer.
4. There Are No Spare Slots
Adding a heat pump? An EV charger? A new oven circuit? If your board is full, there's no clean way to add what you need.
Cramming circuits onto existing ones is unsafe and won't certify.
Verdict: upgrade so you have proper capacity, properly protected.
5. You See Scorching, Hear Buzzing, or Smell Burning
Stop reading. Call us now on 09 407 6468.
Scorching marks, persistent buzzing, or a hot/burning smell around your switchboard are urgent. These are signs of failing components and a real fire risk.
Verdict: emergency callout, then almost certainly an upgrade.
6. You're Renovating, Extending, or Adding Major Loads
Renovations and extensions are the cheapest time to upgrade — the walls are already open and you're already paying for electrical work. The same applies if you're adding solar, a battery, or an EV charger.
Verdict: upgrade as part of the project. Adding it on later costs more.
7. Your Board Was "Just OK" 10 Years Ago
Boards age. Components degrade. Standards change. If your switchboard hasn't been looked at this decade, it's worth a quick inspection. We can do that as part of a free quote.
What Does a Switchboard Upgrade Cost?
A standard residential switchboard upgrade in Whangarei or Kerikeri usually runs $1,800–$3,500, depending on the size of the board and what's behind the wall.
Full breakdown in our switchboard upgrade service page.
Next Step
If any of the above sounded like your home, get in touch. We do free on-site switchboard assessments across Whangarei, Kerikeri, Kawakawa, and Kaikohe.
Call 09 407 6468 or request a quote online.