Electrical wires are cut wires protruding from the ground, found in groups of two. Conductors stick out of the wires, and occasionally generate sparks. At regular intervals, an arc of electricity is created, that spans from one wire to its pair. The discharge stops after a bit, and the cycle restarts. By attacking either one of the wires, the obstacle will take damage, and will eventually be destroyed; after destroyed, the wires will no longer generate sparks or electric current.
Because of the dangerous outbursts of electricity, Yellow Pikmin and Bulbmin should be used to wipe them out, or at least, to cross paths that contain electrical wires. Any Pikmin type can attack and destroy the wires, but because of the spontaneous (albeit telegraphed) discharges, it can catch Pikmin by surprise, instantly killing them. Players should also be careful not to let their leaders through while there is an electric current, as the leaders will get damaged, provided the Anti-Electrifier hasn't been obtained.