Switchboard Upgrades Christchurch

Every circuit in your home starts at the switchboard, and so does its protection. Plenty of Christchurch houses, from brick bungalows in Beckenham to 1960s homes in Bishopdale, still run on rewireable fuses or an early breaker board with little or no RCD protection, and no spare room for the circuits a modern home wants.

That gap shows up most in winter. As wood burners reach the end of their allowed life under Environment Canterbury's Clean Air rules, households add heat pumps and electric heaters, and many also want an EV charger or an induction cooktop. This page covers when a board is due for replacement, what goes in the new one, and how inspection and paperwork work. If the cables running to the rooms are also old, our rewiring page covers that side of the job.

Pricing: a free quote and a fixed price agreed before we start. You get a written, itemised quote, and small jobs can be quoted from photos.

If the cables in the walls are the problem rather than the board, see rewiring.

Signs your switchboard is due

Age on its own is not a reason to replace a board, but some signs are. Ceramic fuse holders with fuse wire, a board mounted on old timber or asbestos backing, scorch marks, a board that feels warm or buzzes, and no RCDs at all are the usual ones. So is a board with every slot used, where a new circuit means doubling up or tacking on a sub-board.

WorkSafe lists fuses that blow and breakers that trip for no reason among its warning signs, and suggests swapping fuses for plug-in circuit breakers of the same rating where possible, because they are safer and do not need rewiring after a fault.

• Rewireable ceramic fuses
• No RCD protection, or RCDs on power circuits only
• Scorch marks, heat or buzzing
• No spare ways for new circuits
• Circuits nobody can identify

What goes into a new board

A modern board gives each circuit overload protection plus RCD protection against shock. We usually fit RCBOs, which combine a breaker and an RCD in one device, so a fault on one circuit only switches off that circuit and the rest of the house stays warm. Where a budget board is better value, circuits are grouped under shared RCDs.

From 13 November 2025, the version of AS/NZS 3000 cited in New Zealand law says RCDs giving shock protection must meet Type A requirements, or be Type F or Type B. Every circuit is labelled, and we can add surge protection and spare ways for future work.

How It Works

Heating load, EV chargers and induction

Christchurch averages about 80 ground frost days a year, and Orion says its network is busiest on very cold winter mornings and evenings. A board planned for a house that was once heated by a wood burner can struggle when two or three heat pumps take over. Larger heat pumps and induction cooktops usually want their own circuits, and each EV charging point needs a dedicated circuit; WorkSafe's EV charging guidelines call for a Type B RCD, or a Type A RCD with an RDC-DD, on a MEN switchboard.

Before quoting, we check the main supply, the main switch rating and how much load the house already carries, so the new board suits the appliances you have and the ones you are planning. Doing the board and an EV charger in one visit usually costs less than two separate jobs.

Inspection, certificates and the law

Main switchboard work has an extra check. WorkSafe says work on the main switchboard, main cable and main earth must be inspected by a licensed electrical inspector, and that the electrician arranges it. We book the inspection as part of the job.

You receive a Certificate of Compliance and an Electrical Safety Certificate, and the inspector issues a record of inspection. Where work counts as high-risk under the Electricity (Safety) Regulations, it is also recorded on WorkSafe's database within 20 working days. Keep the paperwork with your house records, because insurers and buyers may ask for it, especially on a home that has been through earthquake repairs.

Meters, Orion and MainPower

The power is off for most of the job, so we agree a start time and tell you how long to expect. We remove the old board, mount the new enclosure, reconnect and label each circuit, and test every one before switching back on. Insulation and RCD tests often reveal faults the old fuses were hiding, and we talk to you before fixing anything extra.

If the meter or the supply cable has to move, for example during a renovation or a post-quake rebuild, your retailer and lines company are involved. Most of Christchurch, Selwyn and Banks Peninsula is on Orion's network, while Rangiora, Kaiapoi and Pegasus are on MainPower. We tell you what each needs to arrange so the work is planned early.

What affects the price

The main factors are the number of circuits, RCBOs versus shared RCDs, the state of the existing circuits, whether the board moves, and extras such as surge protection or new heat pump, EV and cooktop circuits. Asbestos backing boards need extra care.

Send us clear photos of your board and meter, or book a visit, and we give you a written, itemised fixed price that includes the inspection and certificates. Our electrician prices guide explains the usual cost factors in more detail.

Why Choose Cheeky's Electrical for Switchboard Upgrades

Switchboard Upgrades FAQs

Switchboard Upgrades Across Christchurch

We cover every region: Central Christchurch, North Christchurch, East and Coastal Christchurch, South Christchurch and Port Hills, West Christchurch, Selwyn and Waimakariri.

Related Electrical Services

• Rewiring
• Emergency Electrician
• Electrical Repairs

Switchboard Upgrades Guides

• Buying an Earthquake-Repaired House in Christchurch: Electrical Checks
• Electric Underfloor Heating in Christchurch: Cost to Install and Run
• Going All-Electric in Christchurch: Can Your Switchboard Handle It?
• Orion Solar Export Limits: The 5 kW Rule Explained

See the electrician prices guide or every service we offer.