What is grounding

     Grounding is the electrical connection of various equipment and structures to the ground through conductors. Typical equipment to be grounded are electrical equipment (electric power, signal, communication, wireless, etc.) and lightning protection equipment (lightning rod, overhead ground wire, etc.). In addition, grounding is used in many facilities such as inductive damage prevention, cathodic protection equipment, and static electricity removal.

Grounding type

Grounding can be roughly divided into three types according to its purpose.

Safety ground

Mainly grounding to prevent electric shocks and fires due to accidents in electrical equipment. There are four types of safety grounds depending on the application, and the ground resistance value and wire specifications are determined for each.

Functional ground

Grounding to ensure stable operation of electrical equipment and equipment, using the earth as part of the circuit. This includes antenna circuits for wireless communication and mesh grounding for information and communication equipment in data centers.

Lightning protection ground

Grounding for protecting buildings, protecting the human body, and protecting electrical/electronic devices and information systems. The purpose is to safely discharge lightning currents to the ground.