A qualified electrical worker should assess work involving household wiring, switchboards, outlets or fixed equipment. A repair that appears simple can expose live parts, conceal damage or affect the safety of the wider installation. In New Zealand, check that the person carrying out prescribed electrical work holds the appropriate current practising licence; a business name or general trade qualification is not enough to confirm this. Before work begins, agree on the job’s scope, ask what testing and documentation will follow, and find out whether the proposed repair will address the cause of the problem rather than just its visible symptom.
“Qualified electrical worker” is a useful description, but it does not by itself confirm that someone is licensed to carry out a particular job. New Zealand’s Electrical Workers Registration Board (EWRB) registers electrical workers and issues practising licences. The licence class and scope matter: a person’s experience or training may not authorise every kind of electrical work.
For prescribed electrical work, ask for the name of the worker who will do or supervise the job and check their current practising licence using the EWRB public register. Confirm that the licence is appropriate for the work proposed. If a contractor says another person will complete or certify the job, ask who that person is and what role they will have.
Some limited work may be exempt from the usual licensing requirements, but an exemption is not a general permission to alter household wiring. The rules depend on the work and circumstances. If you are unsure, ask a licensed electrical worker or check current guidance from the EWRB or WorkSafe New Zealand before starting.
Electrical faults are not always visible at the point where a problem appears. A socket that stops working, for example, may have a fault in the outlet, its circuit, a connection elsewhere or the switchboard. A worker can assess the installation and decide what testing or repair is needed rather than guessing from the symptom alone.
Arrange an assessment for work involving fixed wiring, switchboards, circuit breakers, new circuits or changes to outlets and lighting. New equipment can also need a check of the home’s existing capacity and installation, including an EV charger, backup power equipment, a heat pump or other permanently connected appliance. The exact requirements depend on the equipment and work involved, so ask the worker to explain what the job includes.
| Situation | What a worker may need to assess | Useful question to ask |
|---|---|---|
| A breaker trips repeatedly | The affected circuit, connected equipment and possible underlying fault | What checks will identify why it trips? |
| An outlet is damaged, warm or unreliable | The outlet and relevant wiring or circuit, not just the visible fitting | Will you check for damage beyond the outlet? |
| You are adding a fixed appliance or EV charger | Connection requirements and whether the existing installation can support the proposed work | Does the installation need changes before this equipment is fitted? |
| You are renovating or upgrading a switchboard | The scope of the alteration and any related testing, inspection or certificates | What documentation will I receive when the work is complete? |
The table is a starting point, not a diagnosis. Describe what you have noticed, when it happens and what equipment was in use. Don’t remove covers or open the switchboard to investigate; that can expose you to hazards and make the fault harder to assess safely.
Contact an electrical contractor promptly if you notice a burning smell, scorch marks, sparking, crackling, a shock or tingling sensation, or equipment that becomes unusually hot. Repeated breaker trips also need investigation; resetting a breaker again and again does not establish that the circuit is safe. If there is smoke or fire, move away and contact emergency services.
Do not touch exposed wires, damaged fittings or electrical equipment in or near water. If it is safe to reach the main switch without approaching the hazard, switching off the supply may reduce risk while you arrange help. If reaching it would put you in danger, leave it alone. Tell the worker exactly what happened and avoid using the affected equipment until it has been assessed.
Start with the work you need, not just the symptom. When you request an estimate, describe the home, the affected area, any recent changes and the result you want. For a planned upgrade, explain what equipment you hope to add. This gives the worker a better basis for deciding whether a site visit, testing or a broader assessment is needed.
For larger projects, compare estimates on the same basis. A lower figure may cover a narrower repair, while another estimate may include investigation or work on related parts of the installation. Ask each contractor to state assumptions and exclusions so you can compare the proposed work rather than just the totals.
A useful estimate explains the intended outcome and the steps needed to achieve it. If the cause of a fault is not yet known, the contractor may need to quote for investigation before they can price a repair. That is preferable to promising a fixed solution based on a brief description when the wiring or equipment has not been examined.
For a panel or capacity upgrade, ask whether the assessment considers your planned household loads, not just the immediate issue. If you expect to add an EV charger, heating equipment or other substantial electrical load, mention it before the design is settled. A worker can explain which parts of the installation may need attention and what options fit the project. Do not assume that replacing one component will automatically provide capacity for future additions.
For a repair, ask whether the price includes locating the cause, replacing damaged parts and testing the affected work. For new equipment, clarify what connection work is included and whether any separate building work or coordination is outside the electrical quote. If the worker finds a different problem once work begins, ask for an explanation and revised scope before authorising extra work.
Electrical paperwork depends on the work performed. In New Zealand, documentation may include a Certificate of Compliance (CoC), an Electrical Safety Certificate (ESC), or a Record of Inspection (RoI) where the work and its classification require one. These documents are not interchangeable, and not every small job calls for the same set.
Ask the electrical worker which documents apply to your project and who will provide them. For work that requires inspection, confirm how that will be arranged. Keep any certificates and inspection records with your household or property documents, particularly after a switchboard alteration, new circuit or major upgrade. If the paperwork does not match the work you were told had been completed, ask the contractor to clarify it.
Some homeowners look for a quick fix because a fitting appears easy to replace or a breaker seems simple to reset. But appearance does not reveal whether wiring is damaged, the circuit is overloaded or the installation has been altered before. A repair that restores power without addressing the underlying issue may leave the original fault in place.
Rules allowing limited homeowner work are specific, and a task that seems minor may fall outside them. Before doing anything that involves fixed wiring or an electrical installation, check the current requirements rather than relying on advice from an older project or an online video. When there is doubt, use a licensed worker. The cost of an assessment is also easier to weigh against the risk of rework, property damage or injury than an uncertain DIY repair.
Search the individual’s details in the EWRB public register and check that their practising licence is current and appropriate for the work. If the person booking the job is not the person doing it, ask for the name of the worker who will carry out or supervise the electrical work.
New Zealand rules allow only limited work by homeowners, subject to specific conditions; owning or occupying a property does not give general permission to work on its electrical installation. Check current EWRB or WorkSafe guidance for the exact task before proceeding. If the scope is unclear, arrange a licensed worker.
No single inspection or certificate applies to every job. Requirements depend on the type and classification of the work. Ask the worker which testing, inspection and documentation are required for your project and make sure the agreed handover reflects that explanation.
Stop repeatedly resetting it and note what was running when it tripped. If you notice heat, a burning smell, sparks, smoke or damage, keep clear and seek urgent help; contact emergency services if there is fire. Otherwise, have a qualified electrical worker investigate the cause before treating the circuit as usable again.
For planned upgrades or non-urgent repairs, comparing estimates can help you understand differences in scope, materials and testing. Make sure each contractor is pricing the same outcome, and ask about exclusions or extra work that may be needed after investigation. For an urgent hazard, prioritise prompt safe assessment rather than delaying solely to collect several quotes.
For a home electrical repair or upgrade, describe the problem or intended change, verify the worker’s current EWRB licence for the task, and agree on the scope and handover before work begins. If there are signs of immediate danger, keep clear and seek urgent help. For planned work, a qualified electrical worker can assess the installation and explain what is needed before you commit to a repair or upgrade.
