How to ground the wire?

What is a ground wire?

The ground wire, also known as the lightning protection wire, refers to the wire used to introduce the current into the ground. When the electrical equipment leaks, the current enters the ground through the ground wire, especially for high-power electrical appliances. Its function is to quickly introduce current into the earth through the grounding wire when your electrical equipment leaks or is inductively charged, so that the equipment shell is no longer charged, ensuring the safety of personnel and equipment.

Factory layout requirements

Use galvanized round steel with a diameter of 12 or 5*50 galvanized angle iron to drive into the ground, the depth is preferably more than 1.5M, and the grounding resistance is within 4 ohms. Connect with the galvanized flat iron.

Use copper wire (above 16 square meters) to connect with the ground wire of the equipment. The ground wires of machine tools, signal control cabinets, voltage stabilizers, and lasers can be connected to the wiring bar, close to the grounding stake.

How to properly ground the wire?

Connect the PE wire of the laser to the ground wire of the voltage stabilizer, and use a multimeter to measure the resistance value between the laser shell and the ground wire of the voltage stabilizer. If it is less than 1 ohm, the connection is qualified; Connect it with the ground wire of the voltage stabilizer, and use a multimeter to measure the resistance value between the machine tool and the machine tool control cabinet shell and the ground wire of the voltage stabilizer. If it is less than 1 ohm, the connection is qualified.

Check whether the ground wire connection between the voltage stabilizer and the main distribution cabinet is connected. Use a multimeter to test the resistance value between the voltage stabilizer ground wire and the main distribution cabinet ground wire. If it is within 4 ohms, it is normal.

Install the protection adapter board, connect the laser external control line and the machine tool control cabinet through the protection adapter board, and install the two PE lines on the adapter board terminals. After installation, measure the protection adapter board PE terminals and machine tool control. The resistance value of the cabinet PE terminal in the connected state, if it is less than 1 ohm, the installation is qualified.