The common model of yellow-green grounding wire is BVR, which is made of bare copper flexible wire with a diameter of over 25 square meters.

The grounding wire is the line directly connected to the Earth and can also be called a safety return line. In times of danger, it directly transfers high voltage to the Earth and can be regarded as a lifeline.

Due to poor insulation performance or a humid usage environment, household appliances may have a certain amount of static electricity on their casings. In severe cases, electric shock accidents may occur. To prevent accidents, a wire can be connected to the metal casing of the electrical appliance, and the other end of the wire can be connected to the ground. Once the electrical appliance leaks electricity, the grounding wire will carry the static electricity into the ground and release it.

In addition, when electrical maintenance personnel use soldering irons to solder circuits, sometimes the integrated circuits in the electrical appliances may be damaged due to the irons being electrified. This is quite important. Sometimes, friends who use computers may overlook grounding the main case. In fact, connecting a ground wire to the computer's main case can, to a certain extent, prevent the computer from freezing.