The covered porch is still inside for carbon monoxide
A covered porch counts as indoors for carbon monoxide. Learn the 20-foot rule, safe generator placement, and how to set up CO alarms.
01Power & Backup
Extension Cord Gauge for a Generator and a Fridge
A thin cord on a big load overheats and starves the motor. How to pick the right extension cord gauge and length for a fridge, freezer or sump pump on a generator.
- Read
- 2 min
- Updated
- October 5, 2026
The generator is outside, 20 feet from the house. The fridge is in the kitchen. Something has to connect them, and the cheap orange cord from the junk drawer is the wrong one.
01Why gauge matters
Cord thickness is listed as gauge (AWG). Lower number = thicker wire.
A cord that's too thin for its load:
- Heats up. Hot cords can melt and start fires.
- Drops voltage. Motors like fridges and pumps run hot and wear out when they don't get full voltage.
Longer cords make it worse. The longer the run, the thicker the cord needs to be.
02A simple guide
For a typical 120-volt household load:
- 16-gauge: light loads only. Lamps, chargers. Not for a fridge.
- 14-gauge: medium loads at short lengths, like a fridge on a 25-foot cord.
- 12-gauge: the go-to for generator use. A fridge, a freezer or a sump pump at 25 to 50 feet.
- 10-gauge: heavy loads or longer runs, 50 to 100 feet.
Always check the cord's amp rating on the package or the cord jacket against what you're plugging in. When in doubt, go thicker.
03Other rules
- Outdoor-rated (marked with a "W" on the jacket).
- Three-prong, grounded. Never cut off the ground pin.
- One appliance per cord for big loads.
- Uncoil it completely. A coiled cord under load heats up.
- Don't run it under rugs or pinch it in a door.
- Not through a cracked window if you can avoid it. That's how exhaust gets in. An inlet box and transfer switch or interlock is the clean answer. See transfer switch vs. interlock kit.
04Never backfeed
Never plug a generator into a house outlet with a "double male" cord. It can electrocute a lineman down the street and fry your wiring. Use cords to appliances, or a proper transfer switch.
05Check them now
Before winter, uncoil your cords and look for cuts, crushed spots and burned plugs. Replace damaged cords. See starting watts vs. running watts for adding up your loads, and where the generator goes when it's raining.
Photo by Taken on Pixabay.
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