The difference between terminal wiring and soldered copper terminal

The difference between terminal wiring and welding (pressing) copper terminal

When do external wiring with and without terminals apply? Is it applied when the square is less than 6? Is it generally a terminal or no terminal? When will the welding (pressing) copper terminal be used?

1. External wiring with and without terminals is to connect the wires to the terminals of the terminal board. The work content in the quota is: unpacking, inspection, installation, meter disassembly and assembly, testing, calibration, sheathing of insulating tubes, pressure Soldering terminals and wiring;
2. The cross-sectional area of the conductor is 2.5 and 6 in the rating.
3. Whether it is covered with or without terminals depends on the design or construction requirements. If the installation cost of the box includes wiring and terminal content, this fee will not be calculated.
4. The regulations in GB 50303-2002 for construction quality acceptance of building electrical engineering are as follows:

18.2 General items

18.2.1 The connection between the core wire and electrical equipment shall meet the following requirements:

1. Single-strand copper core wires and single-strand aluminum core wires with a cross-sectional area of 10mm2 and below are directly connected to the terminals of equipment and appliances;
2. Multi-strand copper core wires with a cross-sectional area of 2.5mm2 and below are connected to the terminals of equipment and appliances after tightening the tin-lined or connecting terminals;
3. For multi-strand copper core wires with a cross-sectional area greater than 2.5mm2, in addition to the plug-in terminals provided by the device, connect the terminals to the terminals of the equipment or appliance after the terminals are connected; the ends before the multi-strand copper core wires are connected to plug-in terminals Tighten the tin enamel;
4. After the multi-strand aluminum core wire is connected to the terminal, it is connected to the terminal of the equipment and appliance;
5. The terminal connection of each equipment and appliance shall not be more than 2 wires.