Use a 12-gauge cord for a 14-amp mower.

Yes, 12-gauge. Don’t fall for the “it’ll work” trap with a thinner 14-gauge cord — especially if your run is over 50 feet.

Voltage drop is the real enemy here. A 14-amp motor pulls hard, and a long, skinny cord drops voltage under load. Lower voltage means the motor draws even more current to compensate, which heats everything up — the cord, the mower’s motor, your patience when it trips the breaker.

For runs up to 50 feet, a heavy-duty 14-gauge cord might barely get by. But for anything longer, or if you want to not worry about it, go straight to 12-gauge. Thicker wire (lower gauge number) means less resistance. Less resistance means your mower gets the voltage it expects and runs properly.

One more thing: outdoor rated (SJTW or similar), with a grounded plug. Don’t borrow a light-duty indoor cord from your living room. That’s how you melt things.

Your mower will thank you.