How to wire splice connectors t tap wire connector

How to wire splice connectors t tap wire connector?

�� ​I. General operation steps

1. Preparation

2.1. Tools and materials: diagonal pliers, wire strippers, insulating tape/heat shrink tubing, T-type connector (such as special wire clamps, parallel groove wire clamps or insulation piercing connectors).

2. Safety confirmation: Disconnect the power supply and check whether the connector specifications match the cable diameter (such as the cross-sectional area of ​​the main line and the branch line).

3. Process the cable insulation layer

4.1. Strip a small section of the insulation layer at the location where the main line needs to branch (the length depends on the connector requirements, usually 1-2 cm) to expose the conductor; the insulation layer is also stripped at the end of the branch line.

2.⚠️ Note: Avoid damaging the conductor, and aluminum wires need to be specially protected from oxidation.

5. Connect the wires

6.1. Use a special T-type connector (recommended):

1. Place the exposed part of the main line into the connector slot, insert the branch line into the branch hole, and tighten it with bolts or crimping tools (as shown in Figure 1).

2. Example: Parallel groove clamps need to be crimped with hydraulic pliers; insulation piercing connectors directly pierce the insulation layer without stripping.

2.​Manual twisting (when there are no special tools):

1. Spread 2/3 of the branch conductor and twist the remaining 1/3 tightly; the exposed part of the main line is divided into two strands, and after crossing the branch line, it is reversely wound 3-4 times and finally tightened.

7. Insulation and protection​

8.1. Wrap the exposed conductor tightly with insulating tape, and then heat-shrink the heat-shrink tube to seal (the withstand voltage must be ≥ the line voltage, such as 10kV for 380V system).

2. When connecting copper and aluminum conductors, copper-aluminum transition terminals are required to prevent electrochemical corrosion.

⚠️ ​II. Key points​

1. Connection reliability​

2.1. The contact resistance should be ≤20mΩ to avoid heating; the mechanical strength needs to pass the plug-in force and tensile test (such as the branch line does not fall off under a certain tensile force).

2. Hard wires are recommended to be crimped or connected by terminals, and soft wires can be wound but need to be reinforced.

3. Safety regulations​

4.1. Shielded T-junction boxes or prefabricated connectors must be used in high-voltage scenarios (such as 10kV cables) to prevent electric field distortion.

2. Environmental adaptability: IP54 or above protection level is selected for humid places, and corrosion-resistant materials are required for salt spray environments.

5. Special cable treatment​

6.1.​BTTZ mineral insulated cable: It needs to be filled with special sealing paste after cutting and wrapped with magnesium oxide tape after crimping.

2.​Multi-core cable (such as 3-core): Each phase is T-connected separately, and the phase marking is clear to avoid short circuit.

�� ​Summary​

·​Special T-connectors (such as wire clamps and puncture clamps) should be used first to ensure low contact resistance and mechanical strength.

·​Strict insulation and sealing to avoid short circuit caused by moisture and oxidation.

·Large-section cables (such as 95mm²) or high-voltage systems are recommended to be operated by professional electricians and constructed using T-junction boxes.

Tips: The specific operation should refer to the cable model and local electrical specifications. If necessary, conduction test (multimeter) and withstand voltage test.