What Happens If a Generator Gets Wet? (Damage, Safety, and Fixes)

If a generator gets wet—especially at the outlets or control panel—you risk electrocution, permanent damage to the machine, or both. It’s one of those “you don’t want to find out the hard way” kind of situations.

Whether you accidentally left your generator out in the rain or you’re just wondering what could go wrong, here’s exactly what happens, what to do about it, and how to prevent it in the future.

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⚡ What Happens When a Generator Gets Wet?

1. Shock Hazard

Water and electricity are a terrible combo. If moisture enters the outlets or wiring, it can:

• Conduct electricity through the generator frame
• Shock or electrocute anyone who touches it
• Trip GFCI outlets (if you’re lucky)

If you touch a wet generator with both hands or while grounded (like standing barefoot on wet grass), you could complete a deadly circuit.

Curious how to safely run one in storms? Read: Can You Use a Generator in a Storm or Hurricane?

2. Short Circuits and Damage

Water can seep into:

• Outlets
• Control panels
• Wiring
• Internal components like the alternator

This can cause short-circuiting, blown fuses, and even permanent failure of sensitive electronics inside the unit.

Some portable models have GFCI outlets that shut off when they detect moisture. But not all do. Don’t assume the generator will protect itself.

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🧯 What to Do If Your Generator Gets Wet

Step 1: Shut It Down (If It’s Running)

If the generator is still running, turn off the main breaker switch first, then kill the engine. Don’t unplug anything until the power’s off. You don’t want sparks flying while pulling cords.

Step 2: Disconnect from All Loads

Unplug everything. Let the cords dry separately and check for damage before reusing them.

Step 3: Let the Generator Dry Out Completely

Move it to a dry location. You’ll want to:

• Open the access panels
• Let it sit at least 24–48 hours
• Use a fan or indirect heat to speed things up

Do not use a hair dryer or direct heat source—unless you like melted plastic and voided warranties.

Step 4: Inspect Before Restarting

Once everything is dry, inspect:

• Outlets for corrosion or discoloration
• Internal panel (if you’re comfortable opening it)
• Oil and fuel levels

Still unsure? Take it to a local small engine shop to get checked.

Need a better long-term setup? Build your own DIY generator enclosure or my recommended weatherproof generator cover, found on amazon.

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🧠 How to Prevent Water Damage in the First Place

• Use a real cover or enclosure. Not a tarp. Not a trash bag. Something with airflow and a frame.
• Elevate the generator. Use bricks, wood blocks, or a pallet if flooding is a concern.
• Don’t run it next to puddles or downspouts. Rain always finds the low spot.
• Anchor your setup. Wind can tip a cover and let water in.

See: Where Should You Put a Generator During Bad Weather?

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Final Thoughts

If your generator got wet, don’t panic—but do be cautious. Shut it down safely, dry it out thoroughly, and inspect it before firing it back up.

Most of the real danger comes from using a wet generator without knowing what’s going on inside. Don’t skip safety steps to get the fridge back online five minutes faster. It’s not worth it.

And next time? Cover the thing before the storm shows up.

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Also See:

• How to Run a Generator in the Rain (And Not Ruin It)
• Best Covers and Enclosures for Running a Generator in the Rain