The only correct way to store an extension cord.

The over-under looping method keeps the cord from tangling and protects the insulation. It’s not complicated, but most people do it wrong.

When you just wrap a cord in a big circle, you put a twist in the wire every loop. That creates memory in the cable, making it knot itself the next time you pull it out. Over enough cycles, that twisting strains the insulation and the copper inside.

Over-under works like this: alternate the direction of each loop. First loop goes over your hand, next loop goes under, then over, under. This cancels out the twist. The cord lies flat, never gets