A switchboard upgrade is worth considering when its condition, circuit protection or available space does not suit the work the property needs. The right scope may be a targeted repair, additional protection or a full replacement.
The assessment should establish the reason for the work. Age, ceramic fuses or a single tripping circuit do not automatically mean the entire board needs replacing.
Signs a switchboard needs assessment
- Repeated trips, unexplained loss of power or other faults.
- Damaged components, corrosion or deteriorated enclosure condition.
- Unclear circuit labels or unknown safety-switch coverage.
- Insufficient room for proposed additional circuits.
- Planned appliances or renovations that change the load.
- A defect notice or findings from an inspection.
Do not approach a board that is wet, hot, damaged or smells of burning. For smoke, fire or immediate danger, leave and call 000.
Repair, protection upgrade or full replacement?
A defective device or connection may be repairable without replacing everything. Adding suitable safety-switch protection can be a separate scope where the installation permits it. A full replacement may be appropriate when the enclosure, arrangement or extent of required changes makes a smaller repair unsuitable.
The electrician needs to assess the existing circuits as well as the board. A tripping device may be responding correctly to a fault elsewhere.
Protection is not the same as supply capacity
Circuit breakers protect against excess current. Safety switches detect an imbalance that may indicate leakage to earth. Combined devices perform both functions.
Changing these devices does not automatically increase the incoming supply capacity. Additional load may require a new circuit, changes to the circuit arrangement or Level 2 supply work. These should be identified separately.
What the work involves
Depending on the agreed scope, work can include:
- Assessing the board, protection, relevant circuits and proposed load.
- Planning the power interruption and access.
- Repairing or replacing the required equipment.
- Addressing wiring or connection defects identified during the work.
- Testing, labelling and documenting the completed installation.
Suspected asbestos-containing backing material requires suitable assessment and handling arrangements. Do not drill, remove or disturb it yourself.
NSW requires electrical compliance documentation for installation, repair and alteration work, including relevant like-for-like replacements. See Building Commission NSW's CCEW guidance (opens in new tab). The certificate relates to the work completed, not a guarantee of all concealed wiring.
How long will power be off?
Most standard residential switchboard upgrades are completed in a day. The actual work and power-off window depend on the board, circuit condition, access and any supply coordination, and are confirmed after assessment.
Tell the electrician about medical equipment, refrigeration, business operations or other loads that cannot simply be interrupted.
When is it urgent?
Heat, burning smells, arcing, shocks and visible damage need urgent advice. Do not touch equipment to check its temperature or keep resetting a tripped device.
An older board without an active fault can be assessed through a planned booking. Missing safety-switch protection deserves attention, but should not be presented as proof that a fire or shock is occurring.
What to note before you call
Describe the symptom or the reason for the enquiry rather than a proposed solution. Useful details include what trips or loses power and how often, what was running at the time, whether anything on the board looks damaged from a safe distance, and what appliances or renovations you are planning. If a previous electrician, an inspector or the distributor has issued a report or notice, have it to hand.
Read only what is visible on the outside of the enclosure. Circuit labels, the number of devices and whether any have a test button are all useful, and none of them require opening a cover. Do not remove the front panel or a fuse carrier to count or photograph what is behind it.
Questions to ask when comparing quotes
- Is this a targeted repair, added safety-switch protection or a complete replacement, and why is that the appropriate scope?
- Which circuits will be tested, and what happens if a circuit is found to have a fault that prevents it being reconnected?
- Does the price include labelling, testing and the electrical compliance documentation for the work?
- How long will the power be off, and can essential equipment be managed around that?
- Is any supply, metering or Level 2 work required, and is it included or listed separately?
- Are there exclusions, such as asbestos handling or making good, that would be quoted after the board is opened?
Two quotes with different prices are often quoting different work. Ask each electrician to describe the scope in the same terms before deciding which represents the better value.
Planning the next step
AB Electrical can explain switchboard repair and upgrade options and separate necessary work from optional changes. For what changes the price and our typical prices, see our switchboard cost guide.
For an urgent electrical fault, call from a safe place. For planned work, existing labels, records and a description of the proposed appliances can help; do not open covers to gather information.
For heat, a burning smell, arcing or visible damage at the board, call 0405 343 343 from a safe place. For a planned assessment, send an enquiry with the suburb, a short description of the symptoms or planned appliances, and photos of the closed board only if they can be taken safely. The same electrician handles the job from the first call to completion.
