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Generator Installation

Generator Installation near you

Generator installation in an Australian home means one of two quite different things. The modest version is a portable generator kept for outages, run outside and feeding appliances directly through leads. The substantial version is a permanent arrangement in which a generator can supply the house wiring itself, through an inlet and a changeover arrangement installed at the switchboard by a licensed electrician. The generator is the part you buy; the connection is the part that is regulated.

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The line between them is the whole subject. Energy Safe Victoria's instruction is not to try to power the house by connecting the generator into a wall socket or switchboard unless there is an existing dedicated generator inlet, and that any modifications to an electrical installation should only be made by a licensed electrician. Its storm guidance explains why: powering the house by plugging a generator into a wall socket or connecting it to the switchboard is a safety risk for you, for utility workers and for neighbours using the same network.

There is no householder exemption anywhere in this country. New South Wales requires an electrical licence or certificate before any electrical wiring work regardless of the cost of the work or whether the property is residential, commercial or industrial, and Queensland's position is that electrical work is never a do-it-yourself job because it is dangerous and illegal. A generator you plug appliances into is yours. A generator that feeds the house is licensed work.

Backup power options Australian households actually install

  • A portable generator used on its own, with appliances plugged directly into it on heavy-duty leads, which needs no work at the switchboard and no connection to the house wiring at all.
  • An inverter generator, quieter and steadier in its output than an older open-frame unit, which is why households running sensitive electronics tend toward them.
  • A portable generator plus a dedicated generator inlet, the arrangement Energy Safe Victoria's advice contemplates when it refers to an existing dedicated generator inlet, so the generator connects at a purpose-built point rather than through a socket.
  • A permanently installed standby set that sits outside on its own base and is wired back to the switchboard, so the changeover happens at the board rather than with a lead.
  • Diesel, petrol and gas-fuelled units, each with different storage, refuelling and siting consequences that matter more in a bushfire-prone area than the badge on the machine does.
  • A solar and battery system with a backup capability, which is a different product entirely but answers the same question for many households and brings its own standards and installer accreditation.
  • Selected-circuit arrangements, where the electrician determines which circuits the generator can carry, rather than an assumption that a generator will run the whole house.

Why plugging a generator into a wall socket is the thing never to do

Almost every serious generator incident in a home starts with someone trying to energise the house wiring the easy way. Energy Safe Victoria's storm advice states it directly: never try to power the house by plugging the generator into a wall socket or connecting it to the switchboard, because it is a safety risk for you, for utility workers and for your neighbours using the same network. Its generator guidance repeats the instruction with the one exception that matters, which is where there is an existing dedicated generator inlet.

The mechanism is worth understanding rather than memorising. A generator connected into ordinary house wiring while the property is still connected to the grid can push power back out through the service, energising network conductors that crews and neighbours have every reason to believe are dead. The same path also means the generator is exposed to the full return of grid supply the moment it comes back on. A proper connection exists to keep the two supplies apart at all times, which is why it is a physical arrangement at the switchboard rather than a procedure someone is trusted to follow correctly at two in the morning.

That is also why the work is licensed. Energy Safe Victoria's position is that any modifications to an electrical installation should only be made by a licensed electrician, and in New South Wales the licence requirement attaches to any electrical wiring work, which is defined as the actual physical work of installing, repairing, altering, removing or adding to an electrical installation, or supervising that work. Adding an inlet and a changeover arrangement is squarely inside that definition, regardless of how small the installation or how rarely it will be used.

Carbon monoxide: the rule that has no exceptions

  • Energy Safe Victoria's warning about generators is unambiguous: they emit carbon monoxide that you cannot see or smell, and may cause carbon monoxide poisoning and asphyxiation very quickly, and death.
  • Portable generators should never be used indoors or in enclosed areas, which Energy Safe's outage guidance spells out as including garages and tents.
  • An open garage door, an open window or a short run does not change this, because the gas cannot be seen or smelt and accumulates faster than a person notices anything is wrong.
  • Position the unit so the exhaust is not blowing onto flammable or combustible materials, and not back into the house, with the exhaust pointed away from windows and doors.
  • Keep the generator out of dry grass, because the hot exhaust can ignite it, which is a live consideration through an Australian summer and in a bushfire-prone area.
  • Always make sure the generator is off and has cooled down before refuelling, and take care not to spill fuel, because the hot exhaust can ignite it.
  • Use only heavy-duty extension cords that are in good condition and rated in watts or amps at least equal to the rating of the generator.
  • If anyone becomes unwell, drowsy or confused while a generator is running, get them into fresh air immediately and seek medical help; in an emergency the number is triple zero.

What a licensed electrician does when connecting a generator to the house

  • An assessment of the switchboard first: what protection exists, whether there is a spare way, and the condition of the consumer mains and main earthing, since a generator connection is an alteration to the installation.
  • A conversation about loads rather than about the machine, working out which circuits genuinely need to run during an outage and what each of them draws when starting as well as when running.
  • Deciding where the generator will stand during an outage, with the exhaust clear of windows, doors and combustible material, and a route for the connection that does not run through a doorway.
  • Installing the inlet and the changeover arrangement so the house wiring and the network supply can never be connected at the same time, which is the entire point of the installation.
  • Labelling the board and the inlet clearly, so the sequence is followable by someone in the dark who did not watch the installation.
  • Testing the arrangement under load before it is needed, including confirming the changeover behaves correctly on both transitions rather than only when the generator is started.
  • Walking the household through starting, connecting, changing over and shutting down, in that order, and writing the sequence down where it will still be legible in a few years.
  • Issuing the certificate the state requires and noting anything on the board that should be addressed separately.

Licences and certificates for a generator connection

Start with the licence and check it before the work rather than after. New South Wales requires an electrical licence or certificate before you can do any electrical wiring work regardless of the cost of the work or whether the work is residential, commercial or industrial, and carrying out electrical wiring work without one is a breach of the Home Building Act 1989 that carries substantial penalties for individuals and much larger ones for companies. Western Australia requires by law that all electrical work is carried out by a person who holds the relevant electrical licence, with contractor licences identified by the prefix EC and individual electricians by EW, both of which can be checked before anyone starts.

The certificate then follows the work. In New South Wales a certificate of compliance for electrical work must be submitted for any type of electrical work that involves installing, repairing, adding or altering electrical equipment in an electrical installation, and the licensed electrician must submit it no later than seven days after completing the work including the safety and compliance test. In Western Australia, an electrical contractor must give you an electrical safety certificate within twenty-eight days of electrical work, excluding maintenance work and like-for-like replacement of equipment, and it is required for all types of electrical installation work other than repairs.

If the certificate never arrives, there is a defined next step rather than a shrug. Western Australia's advice is to contact your electrical contractor first, and if it is still not provided, to contact your local network operator, which in most cases will be Western Power or Horizon Power. Keep whatever you receive with the property records, because a generator connection is an alteration to the switchboard that every later electrician, and any insurer, will want to understand.

Storm season, bushfire season and choosing when to install

Australian outages cluster in seasons, and so does the demand for the people who install backup power. Summer, December to February, brings the storms, the heat and the peak load that together produce most of the year's unplanned outages, and it is also when bushfire risk makes a petrol-fuelled machine standing in dry grass a hazard in its own right. Energy Safe Victoria's instruction to keep a generator out of dry grass because the hot exhaust can ignite it is not a footnote in January.

That makes the cooler months the sensible time to do the work. An installation booked in winter, June to August, or in early spring gets an electrician who is not working through a storm backlog, and it means the changeover is tested at leisure rather than discovered to be mislabelled during the first outage. It is also the time to work out where fuel will be stored, because a generator with no fuel and a closed service station is the most common way a backup plan fails.

Plan the outage itself, not just the equipment. Energy Safe Victoria's outage advice is to switch off appliances, because they could start a fire if the power returns when nobody is around, and when supply comes back, to turn on the main power switch and then each circuit breaker one at a time. It also advises testing a residual current device by pressing and holding the test button for five seconds, with the device required to operate immediately. A household that has rehearsed that sequence once handles a real outage far better than one reading labels by torchlight.

Your rights on the installation, and using LokalMatch to find an electrician

Two separate protections apply and they are worth keeping apart. The generator is a product, with its own manufacturer warranty and its own supplier. The installation is a service, and under the Australian Consumer Law it must be carried out with an acceptable level of care and skill, must be fit for any stated purpose, and must be supplied within a reasonable time where none was agreed, with the ACCC noting that those basic rights cannot be taken away by anything a business says or does. A changeover that was specified for the loads you described and does not carry them is an installation question, not a generator question.

Make the purpose explicit in writing at the quoting stage: which circuits must run, for how long, whether anyone in the house relies on medical equipment, and whether the household will be away when outages happen. That sentence in an email is what turns a vague expectation into a stated purpose, and it is far more useful than any verbal assurance given on a driveway.

LokalMatch is only the introduction to the trades who do this work. You describe the job once, with your postcode, whether you already own a generator and what size, where it would stand, how far that is from the switchboard and which circuits matter to you, and electrical businesses working in your area contact you themselves; they pay LokalMatch for the requests they take. LokalMatch does not install generators, does not carry out electrical work, does not set or quote prices and does not vet, rank or recommend anyone, so confirming the licence on your state register and comparing what each quote includes stays with you.

Generator Installation: frequently asked questions

Can I plug my generator into a powerpoint to run the house?

No. Energy Safe Victoria's instruction is never to try to power the house by connecting a generator into a wall socket or switchboard unless there is an existing dedicated generator inlet, and its storm guidance explains that doing so is a safety risk for you, for utility workers and for neighbours on the same network. Without an inlet and changeover arrangement, plug appliances directly into the generator instead.

Can I install the inlet and changeover switch myself?

No. Connecting a generator to the house wiring is an alteration to an electrical installation, and Energy Safe Victoria's position is that any modifications to an electrical installation should only be made by a licensed electrician. New South Wales requires a licence before any electrical wiring work regardless of the cost, and Queensland states that electrical work is never a do-it-yourself job because it is dangerous and illegal.

Is it safe to run a generator in the garage with the door open?

No. Energy Safe Victoria states that portable generators should never be used indoors or in enclosed areas, including garages and tents, because they emit carbon monoxide that cannot be seen or smelt and may cause poisoning and asphyxiation very quickly, and death. An open door does not clear the gas fast enough, and it can still reach the living areas of the house.

Where should the generator stand while it is running?

Outside, in the open, with the exhaust pointed away from windows and doors and not blowing back into the house or onto flammable or combustible materials, and clear of dry grass, which the hot exhaust can ignite. Choose and agree the position when the inlet is installed rather than improvising it in the dark during the first outage.

What paperwork should a generator connection produce?

The certificate your state requires for electrical work. New South Wales requires a certificate of compliance for electrical work, submitted no later than seven days after completing the work and its safety and compliance test. Western Australia requires an electrical safety certificate within twenty-eight days for installation work, and advises contacting your contractor and then your network operator if one never arrives.

How do I know what size generator I need?

Work from the circuits rather than the floor area. List what must keep running during an outage, and have the electrician check what each load draws when running and the higher current motors pull when starting, because a fridge, a pump or an air conditioner behaves very differently at the moment it starts. That list also determines the changeover arrangement, so it is worth settling before anything is purchased.

Sources

  1. Energy Safe Victoria: Using a generator safely
  2. Energy Safe Victoria: Storms and energy safety
  3. Energy Safe Victoria: What to do in a power outage
  4. NSW Government: Electrical licences and credentials
  5. NSW Government: When to submit a Certificate of Compliance for Electrical Work
  6. Building and Energy WA: Having electrical work done
  7. Queensland Government: Electrical safety at home
  8. ACCC: Consumer rights and guarantees

Written by the LokalMatch editorial team. Last reviewed 14 September 2026. How we write and check our guides

What affects the cost of generator installation

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Type and amount of work, from a single fixture to a full rewire
  • Condition and age of the existing wiring
  • Panel and service capacity
  • Distance from the panel to the new circuit
  • Access through finished walls and ceilings
  • Permits and inspections

How to compare electricians before you hire

  • Hire a licensed electrician or electrical contractor for any wiring, panel or new circuit work.
  • Ask whether the work needs a permit and inspection, and make sure the electrician arranges it.
  • Get a written quote that lists fixtures, materials, patching of walls and ceilings, and permit costs.
  • For panel upgrades and EV chargers, ask them to check whether your electrical service can handle the added load.
  • Choose someone who explains what they found in plain language before starting.

Questions to ask electricians before you hire

  • Are you licensed for electrical work in my area?
  • Will you get the permit and arrange the inspection?
  • Can my current panel and service handle this work?
  • Will you need to open walls or ceilings, and who patches them afterwards?
  • Is the price fixed, or could it change once you see the existing wiring?
  • What warranty do you offer on your work?

When to call a pro for generator installation

  • Burning smells, scorch marks or warm outlets and switches: turn off the circuit at the panel if it's safe to do so and call an electrician.
  • Breakers that trip again and again
  • Flickering or dimming lights that aren't fixed by changing the bulb
  • Any sparking, buzzing or exposed wiring

Generator installation permits and local rules

Some generator installation work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

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