Generator inlets and changeover switches in Sale
Backup power for Sale homes and farms: how a generator inlet and changeover switch work, choosing essential circuits, sizing and the Gippsland price band.
The safe way to run a home in Sale off a portable generator is through a generator inlet, a weatherproof socket fitted to an outside wall, and a changeover switch at the switchboard, both installed by a licensed electrician. The changeover switch separates the house from the network while the generator runs, so power cannot flow back into the street lines. Plugging a generator into a power point or wiring it into the board any other way is dangerous, and Energy Safe Victoria says never to do it.

Sale Electrician forwards your enquiry to an independent electrical contractor nearby, which then quotes the inlet and switch and installs them under its own licence. The about page has the detail of that arrangement.
Why do people around Sale want backup power?
Storms have cut power across Wellington Shire for days at a time. Two recent events show the pattern:
| Event | What happened | Source |
|---|---|---|
| Storm of 9 and 10 June 2021 | Wellington was listed among the most affected council areas; supply was cut to roughly 200,000 customer connections that night, rising to about 300,000 on 10 June | AIDR storm record |
| Storm of Friday 29 October 2021 | On 1 November, day 4 of the outage, around 2,400 Wellington residents were still without electricity; many outside the major towns also had no running water or heating | Wellington Shire media release |
A rural property is hit hardest when the power goes. Bore and pressure pumps stop, so does the water. Milk vats, cool rooms and freezers warm up. Electric heating and hot water stop. The Quote Yard notes that long outages after storms have made backup generators common on rural Gippsland properties, and that holds for dairy farms near Maffra and acreage around Longford.
What is the difference between an inlet, a changeover switch and a generator lead?
Three parts work together:
- Generator inlet. A weatherproof, male-pin socket mounted on an outside wall near where the generator will sit. The generator plugs into it, never into a power point.
- Changeover switch. A switch at the board, usually with positions for mains, off and generator. In the generator position the house is cut off from the network, which protects line workers and neighbours on the same line.
- Generator lead. A heavy-duty outdoor lead rated for the generator’s output, with the right plug at each end to match the generator and the inlet.
The homemade double-male lead some people use to push power back through a socket can kill, and making one is the kind of do-it-yourself electrical work Energy Safe calls unsafe and illegal. Energy Safe Victoria’s power outage advice says never power the house by plugging a generator into a wall socket or connecting it to the switchboard, because it puts utility workers and neighbours at risk. A changeover switch installed by an electrician is the lawful way to connect.
Which circuits should a generator feed?
A portable generator cannot run a whole modern house. The Quote Yard explains that a small unit may run the fridge, lights and a few power points, while a pressure pump, bore pump or dairy needs a much larger machine. Picking essential circuits is the first decision:
| Option | What runs during an outage | Suits |
|---|---|---|
| Inlet and changeover on the whole board | Whatever you switch on, up to the generator’s limit | Homes with a large generator and disciplined use |
| Essential circuits separated | Only the chosen circuits, such as fridge, lights and one power circuit | Homes with a small portable unit |
| Fixed standby generator with automatic changeover | Most or all of the house, starting by itself | Farms, dairies and larger homes |
| Home battery with backup | Backed-up circuits switch over automatically | Homes with solar panels |
Write down what you must keep running and the generator’s rated output before you talk to an electrician. Ovens, electric hot water, heaters and air conditioners usually stay off the generator list.
What does a careful electrician check before installing one?
A good provider will want to see the board and the generator, and will ask about:
- The generator’s make, model and continuous output rating, so the inlet, lead and circuit protection match it.
- Where the generator will run: outside, on a firm surface, away from doors, windows and dry grass.
- The board layout and whether there is space for the changeover switch, or whether the board needs work first.
- Which circuits you want backed up, and whether a pump or vat sits on its own sub-board in a shed.
- Any solar system, which has its own shutdown steps during an outage.
If the job means alterations to the main switchboard, ask whether it needs an inspection and a prescribed certificate. Where the board is old, full or on an asbestos panel, the electrician may recommend the switchboard upgrades work be done first.
A careful electrician will not wire a changeover that can connect the generator and the mains at the same time, will not supply a double-male lead, and will not mount the inlet where the generator would have to run in a garage or under a carport roof.
How is a generator inlet and changeover switch installed?
A typical job on a Sale house runs in this order:
- Agree the essential circuits and the inlet position with you.
- Isolate the supply at the main switch.
- Mount the inlet on the outside wall and run cable back to the board.
- Fit the changeover switch, and separate the essential circuits if that option was chosen.
- Test the changeover in all three positions, with the generator connected and running.
- Label the board and leave written operating steps beside it.
- Issue the Certificate of Electrical Safety for the work.
The Quote Yard suggests running the generator for a short time every few months, so you know it starts and the changeover works before the next storm.
How much does a generator inlet cost in Sale?
The Quote Yard prices an inlet with changeover switch at $900 to $2,200 in its regional guide of 28 October 2026, quoted as a fixed sum once an electrician has seen the board. Switchboard layout and generator size are what move the figure. A tidy modern board with a spare way sits at the lower end; an old crowded board, a long cable run to the inlet or separating essential circuits pushes it up. The guide also notes that electricians across Gippsland can be booked out for weeks after a major storm, so this is work best done in calm weather. To compare prices, ask for a generator changeover quote that lists the inlet, switch, any circuit separation and the lead separately.
What should rural owners know before the next storm?
Rural properties around Sale often have their own poles and overhead lines between the boundary and the house, sheds and pumps. Keeping those safe is generally the owner’s job, and the private power poles guide explains the duties. A generator does not fix a damaged private line, and nobody should use one to feed a line that may be down. For what to do in the first hours of an outage, see the storm power outage checklist.
Next step
For a generator inlet quote, send the provider your town, the generator’s make, model and output rating (a photo of its plate works), the circuits you want to keep running, where you would run the generator, and a photo of the switchboard with the door open. If a pump or vat is involved, say where it is and how far from the house. Then send a backup power enquiry and an independent local electrician will contact you with a price.
Frequently asked questions
- Is it legal to backfeed my house through a power point with a generator?
No. Energy Safe Victoria says never to power a house by plugging a generator into a wall socket or connecting it straight to the switchboard. Power can travel back into the network and injure line workers or neighbours. Use an inlet and changeover switch fitted by a licensed electrician.
- Can I run my generator in the garage if the door is open?
No. Energy Safe Victoria says never run a portable generator indoors or in enclosed areas such as garages and tents, because the exhaust holds carbon monoxide you cannot see or smell. Keep it outside, away from windows, doors, rain and dry grass.
- How big a generator do I need for a house near Sale?
That depends on what must keep running. A small portable unit can carry a fridge, lights and a few outlets. A bore or pressure pump, milk vat or cool room needs much more output. Add up the running loads and the starting current of any motor, then ask the electrician to check the sizing.
- Does a home battery replace the need for a generator inlet?
Sometimes. A battery with backup can switch over by itself when the grid fails, but only for the circuits it is set up to back up and only while charge lasts. Some rural households fit both. Ask whether any solar or battery quote actually includes backup.
- How often should I run the generator between outages?
Start it and run it for a short time every few months, and switch the changeover across while it runs, so you know both work before the next storm. Check fuel, oil and the lead at the same time, and store fuel in proper containers away from ignition sources.