Just don't daisy-chain extension cords.

No, it’s not safe. The fire risk is real and not worth the convenience.

Extension cords are rated for a specific length and gauge. When you connect two, you increase the resistance and voltage drop, which makes the cords run hotter. Heat builds up inside walls or under rugs, and that’s how fires start. Even if you only plug in a lamp, the combined cords are a weak point.

Plus, the connection between the two cords is where things get loose. A loose connection creates arcing, which sparks, which is bad. If you absolutely must reach a distant outlet, buy a single longer cord of the correct gauge (12-gauge for heavy loads, 14-gauge for light). It costs a bit more and saves your house.

Future You deserves better than a crispy outlet.