How Do You Dry Out a Generator?
Rain + generators = a soggy disaster waiting to happen. To dry out a generator, disconnect it, check for water, then use air drying, desiccants, or compressed air—carefully! Want to avoid electric shocks, fried circuits, and a generator that wheezes instead of whirrs?
Immediate Actions and Assessing Your Wet Generator
The dangers of a wet generator: why prompt intervention is crucial
Water and electricity are sworn enemies. When a generator gets wet, it doesn’t just sulk—it becomes a genuine safety hazard. One wrong move and you could be staring down an electrical fire or a nasty shock.
The sooner you act, the more you’ll reduce the risk of internal damage. Quick thinking here could save you hundreds in repair bills.
Electrical hazards and component damage in a water-exposed generator
Moisture doesn’t just sit politely—it seeps in. It gets into control panels, wire casings, and metal parts, setting the stage for short circuits and burnt connections.
If you try to switch it on without drying it out properly, it could fry critical components or trip breakers. That faint sizzle? Not a good sign.
Potential for long-term corrosion and malfunction in your generator
Even if the generator powers on, hidden moisture can slowly chew away at its insides. Bearings rust. Windings corrode. Electrical connectors lose conductivity.
It may not break today—but it’ll let you down when you need it most. Regular checks after a soaking are essential to dodge these long-term issues.
Generator got wet won’t start: diagnosing the problem
A generator that refuses to start after getting wet isn’t always toast. But you do need to play detective.
Identifying the extent of water ingress into your generator's engine and electricals
Pop the cover and look for obvious signs—condensation, puddles, or discoloured wiring. Use a torch if needed.
If the engine bay or outlets are damp, assume water has made its way inside. The more thorough your inspection, the better your chances of reviving it.
Safely disconnecting all power and fuel sources to your generator
Before you poke around, disconnect everything. That means unplug it from any external circuits, switch off the fuel valve, and make sure the breaker is off.
Gloves and safety glasses are a must. You’re dealing with residual current and fuel vapours—it’s not the time for shortcuts.
Initial steps: moving and securing your affected generator
Now get it somewhere dry—fast.
Transporting your generator to a dry and secure location
A sheltered spot with airflow is ideal. Think a garage, verandah, or shed—not a stuffy storeroom.
Use a dolly or trolley if it’s heavy, and avoid dragging it through mud or standing water. You’re trying to help it, not drown it twice.
Preventing further contamination after water exposure for your generator
Tempting as it is, do not test it yet. Letting it sit wet invites mould, rust, and deeper damage.
Raise it off the ground if needed, and keep curious hands (and pets) away while it dries.
Thorough cleaning and drying methods: how to get water out of your generator
Removing contaminants and moisture from your generator's exterior
Start with the outside. Even a wipe-down goes a long way.
Using compressed air for initial cleaning of your generator's outer surfaces
Grab a can of compressed air or an air compressor. Aim it at vents, panels, and control knobs to blow out trapped water and debris.
Be gentle—you’re removing moisture, not stripping paint.
Gentle cleaning with suitable solvents for external generator components
Wipe the casing and controls with a cloth dampened in isopropyl alcohol. No petrol or heavy chemicals.
This helps evaporate moisture and removes grime that could hold water or attract rust.
Disassembling your generator for comprehensive internal drying
If you’re comfortable, crack it open.
Identifying parts that can be safely removed for better access to your generator's core
Remove panels, the spark plug, and the air filter. If your model has a battery, disconnect and remove it.
Each removed piece makes it easier to reach damp spots and lets air circulate inside.
Special attention to windings, commutators, and bearings in your generator
These are your generator’s weak spots when it comes to water. Use dry cloths or paper towels to gently pat dry what you can reach.
If it’s very wet inside, stop and allow several hours—if not days—of drying before proceeding.
Effective drying techniques for your generator's internal components
Here’s where we bring the heat—carefully.
Forced air drying method: circulating warm, dry air around your generator
Set up a fan to keep warm air moving through the generator. Use a space heater in the room—not directly on the generator—to raise the ambient temperature.
Give it time. Rushing can warp plastic or damage rubber seals.
Current drying method: applying low-voltage current to windings for internal heat in your generator
This one’s best left to the pros. Applying low-voltage current helps generate heat inside the windings, speeding up drying.
But it’s not DIY-friendly unless you’ve got electrical experience and the right gear.
Prevention is key: how to cover generator in rain and protect from moisture
Generator cover: your first line of defence against rain
A decent cover beats damage control every time.
Choosing the right type of generator cover for your unit (waterproof, UV-resistant)
Look for one that’s waterproof, breathable, and UV-resistant. Bonus points if it’s made for your exact model.
Universal covers are fine, but make sure it fits snugly.
Ensuring proper fit and ventilation when using a generator cover
Too tight, and you trap moisture. Too loose, and wind or rain can sneak in.
The best covers have vent flaps so the generator doesn’t suffocate when it cools down.
Generator tent: providing shelter for your operating generator
Need to run your generator during a storm? A tent is your best mate.
Benefits of a generator tent for safe operation in wet weather
Generator tents are built for the job. They keep out rain while allowing exhaust fumes to escape safely.
Unlike tarps, they don’t collapse or trap heat—making them perfect for stormy power outages.
Proper placement of a generator tent to ensure exhaust ventilation
Set it up on flat ground, well away from doors or windows. Always allow at least a metre of clearance around the exhaust.
Never run it inside or under a carport with closed sides. Carbon monoxide is no joke.
How to run generator in rain: safe operational practices
If you’re braving the rain, do it smart.
The importance of proper enclosures or tents to shield your generator
Rain hitting an open generator isn’t just bad—it’s dangerous. Water in the outlets or engine can cause sudden shutdowns or shocks.
A tent or weather-rated enclosure keeps you safe while keeping power flowing.
Avoiding direct exposure of your generator to precipitation during use
Even a sprinkle can seep into vents or soak wiring. Never leave your generator fully exposed.
Skip the “bin bag and bungee cord” method—get the proper gear.
Can a generator get wet when not in use? Understanding vulnerability
Yep—even idle generators are at risk.
Risks of storing an unprotected generator outdoors in damp conditions
Moisture creeps in, corrosion starts, and spiders move in. Leave it uncovered and you’ll pay for it next time you need it.
Best practices for long-term storage to prevent moisture damage to your generator
Raise it off the ground on a pallet or bricks. Cover it, check it monthly, and store it in a dry, shaded area.
If you’re storing long-term, drain the fuel and remove the battery too.
Conclusion: restoring and protecting your generator's performance after water exposure
Post-drying procedures and testing for your generator's safety
Once dry, do a full check. Test the electricals with a multimeter, reinstall the plug and battery, and fire it up with no load.
If it purrs quietly, you’re in the clear. If it coughs or stalls, give it more time or recheck your connections.
Insulation resistance testing: ensuring your generator is safe to re-energise
Using a megohmmeter, test the insulation resistance of the windings. Low readings? Not dry enough.
Safety first—don’t rush this step, especially if the generator powers sensitive equipment.
When to seek professional help for your water-damaged generator
If you’re unsure, call in a technician. They can test circuits, dry components safely, and even replace damaged parts without the guesswork.
Sometimes, peace of mind is worth the callout fee.
You may also like:
