Ever parked your generator so close to the shed it felt cosy? Short answer: don’t. generators need breathing room — for safety, cooling, and to avoid nasty surprises. Stick around and we’ll cover exactly how much space you need, plus the Aussie rules that keep everything running smooth.
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A generator isn’t like the eski you shove under the awning — it needs room to breathe. Without proper spacing, you’re looking at overheating, noise complaints, or worse, a fire risk. This is true for all power generators, regardless of their size.
The first thing to check is how far your generator is from the house. Too close and you risk fumes sneaking indoors. Too far and you might be running extension leads everywhere.
A common guideline overseas is to keep at least 20 feet (around six metres) between the generator and your home. It sounds like a lot, but it gives fumes and noise room to dissipate. This is especially important for petrol generators which produce significant exhaust.
Imagine firing up the generator in a tight corner behind the garage. It’s convenient, but the heat builds, the exhaust hangs around, and suddenly you’ve got a dangerous situation. With enough clearance, your Generator stays cool, quiet, and easy to maintain. Many people looking for generators for sale often forget to plan for this space before their purchase arrives.

Australians like things measured in metres, not feet, so let’s make it simple. Whether you’ve got a portable unit or a bigger standby model, spacing is everything.
As a rule of thumb:
Portable Generators need about 0.9 metres (three feet) of space all around.
Standby Generators need at least 1.5 metres (five feet) from any structure. Large diesel generators often fall into this category for home backup.
Some councils and building codes may ask for even more, depending on the setup.
Australian Standards such as AS/NZS 3010:2005 set the expectations, and local councils can add their own requirements. They’re not suggestions — they’re legal obligations. The safest bet? Have a licensed electrician confirm your placement before installation, particularly when setting up generators for home use.

Still unsure if you’ve left enough space? A clearance calculator, or even the diagrams from your Generator’s manual, can show exactly how much room you need in every direction. If you are using Westinghouse generators, always refer to their specific clearance charts in the manual.
Portable units are easy to move, but that doesn’t mean you can plonk them anywhere. They need a flat, stable spot at least a metre away from walls, tents, or vehicles. Never run them in garages or under awnings — good airflow is non-negotiable. This is vital when positioning camping generators at your site.
Think of your generator as living inside an invisible bubble. It needs clear air on all sides — at least a metre in every direction. This space keeps it cool, lets fumes escape, and gives you room to refuel or service it without hassle. Even silent generators require this 360-degree space to manage internal heat effectively.

Giving your generator proper clearance isn’t just a box to tick. It’s what keeps it safe, reliable, and ready to run when the power cuts out. Measure carefully, stick to the Australian standards, and you’ll avoid the kind of drama no camper, homeowner, or tradie wants. If you find space is too tight for a traditional unit, you might consider portable power stations which have much simpler clearance requirements.