Next, you need to make sure you’re using the correct gauge of extension cord. Every extension cord has an American Wire Gauge (AWG) rating that describes how thick the wire is inside the insulation.

Here are a few indicators to check for on a cord's label, to make sure it can do what you need safely. J means it's insulated for up to 300 volts (about average for North American households).

(WHTM) — Extension cords come in handy when you need to plug something in that is far away from a power outlet but people need to make sure they are using extension cords safely. According to ...

Use an 18-gauge, two-prong, light-duty extension cord. It can handle up to 7 amps up to 25 feet—perfect for discreetly running to a nightstand from the outlet behind the bed.