Generator Safety: Carbon Monoxide and Placement Guide

More people die from carbon monoxide poisoning after hurricanes than from the storms themselves. After Hurricane Laura (2020), CO poisoning killed multiple people in Louisiana alone. After Hurricane Ida (2021), the pattern repeated. Every death was preventable. This guide covers the non-negotiable rules for running a generator safely.

Carbon Monoxide: The Invisible Threat

A portable generator produces as much carbon monoxide as 450 idling cars. CO is colorless, odorless, and lethal. Symptoms start with headache and dizziness and progress to confusion, loss of consciousness, and death — sometimes within minutes in an enclosed space. Sleeping people are especially vulnerable because they do not notice the early symptoms.

Rule #1: Never Run a Generator Indoors

Never means never. Not in the garage (even with the door open). Not in a carport. Not in a basement. Not in a shed attached to the house. Not under a covered patio that is partially enclosed. The CPSC is clear: a generator running in a garage with the door open produces lethal CO levels within 5 minutes.

Rule #2: 20 Feet Minimum

Place the generator at least 20 feet from any door, window, or vent opening. Point the exhaust away from the house and any occupied area. 20 feet is the CPSC minimum — more distance is better. In a typical Louisiana subdivision with tight lot spacing, this may mean placing the generator in the front yard rather than behind the house.

Rule #3: Install CO Detectors

Battery-powered carbon monoxide detectors are your last line of defense. Install one on every floor of your home and outside every sleeping area. Replace batteries at the start of every hurricane season. A CO detector costs $20–$40 and can save your family's life.

Recommended: Kidde Nighthawk ($30–$40) with battery backup and digital display. Check price on Amazon

Proper Generator Placement

Ideal Setup

• Place on a flat, dry surface (concrete pad, plywood platform, or level ground)
• At least 20 feet from any building opening
• Exhaust pointed away from all structures and gathering areas
• Under a canopy or pop-up tent to protect from rain (with all sides open for ventilation)
• Away from combustible materials and fuel storage
• Connected to the house with heavy-duty outdoor-rated extension cords (12 gauge minimum for most generators)

Rain Protection

Running a generator in the rain without protection risks damage and electrocution. Do not cover it with a tarp that restricts airflow. Options:

• Generator tent/canopy: Purpose-built covers with open sides ($50–$100). The GenTent is a popular option that mounts directly to the generator frame.
• Pop-up canopy: A standard 10x10 pop-up shelter provides rain protection with full ventilation. Stake it down against wind.
• DIY rain shield: A sheet of plywood on blocks over the generator, elevated 2+ feet for airflow. Ugly but effective.

Electrical Safety

Extension Cords

Use only outdoor-rated extension cords (marked for outdoor use, typically with a "W" in the wire type designation). Match cord gauge to generator output and distance:

An undersized cord overheats and can start a fire. When in doubt, go heavier gauge.

Never Backfeed Your Panel

Plugging a generator into a wall outlet with a "suicide cord" (male-to-male plug) is illegal, violates electrical code, and can kill utility workers restoring power to your neighborhood. The generator's electricity flows back through your panel, through the transformer, and onto the power lines at lethal voltage.

If you want to power circuits in your panel, hire an electrician to install a transfer switch ($200–$500 for manual, $500–$1,000 for automatic). This is the only safe and legal way to connect a portable generator to household wiring. Many electricians in Louisiana will do the installation for $300–$600 labor, and it is worth every dollar.

Fuel Safety

• Never refuel while running. Shut off the generator and let it cool for at least 5 minutes before adding fuel. Gasoline on a hot engine or exhaust manifold ignites instantly.
• Store fuel away from the generator in approved containers (UL-listed gas cans). Keep fuel at least 10 feet from any ignition source.
• Add fuel stabilizer to stored gasoline (STA-BIL or equivalent). Untreated gasoline degrades in 30 days and can damage the carburetor.
• Propane is safer for storage than gasoline — it does not degrade, does not spill, and has a lower fire risk. If your generator supports dual fuel, propane is the better choice for emergency stockpiling.
• Limit stored gasoline to what your local fire code allows (typically 25 gallons in approved containers for residential properties).

Generator Maintenance for Readiness

• Quarterly: Start and run under load for 30 minutes to keep carburetor clean and battery charged.
• Annually (before June 1): Change oil, replace spark plug, inspect air filter, check fuel lines for cracks.
• After each use: If storing for more than 30 days, either add stabilizer to the tank or run the carburetor dry (close the fuel valve and let the engine die naturally).

Recommended Safety Equipment

• Kidde Nighthawk CO Detector — Battery-powered carbon monoxide detector ($30–$40)
• GenTent Generator Running Cover — Rain protection without restricting airflow ($80–$120)
• STA-BIL Fuel Stabilizer — Prevents gasoline degradation in storage ($8–$12)
• Iron Forge 50ft 10-Gauge Extension Cord — Heavy-duty outdoor cord for generators ($40–$55)