Small busbar terminals in an incoming line cabinet are connected using appropriate terminal clamps or adapters, ensuring secure mechanical and electrical contact while following safety standards.

Step-by-Step Connection Process

1. Identify the Busbar and Terminal Type Determine the busbar material (copper or aluminum) and thickness, as well as the type of terminal clamp required. Small busbar terminals typically accommodate flat copper bars of 3 mm, 5 mm, or 10 mm and conductor cross-sections from 1.5 up to 185 mm², depending on current rating (180–500 A) and voltage (up to 1000 V AC / 1500 V DC) . 2. Prepare the Incoming Cables Strip the insulation from the incoming line cables to the correct length, ensuring the conductor is clean and free of oxidation. For terminals requiring ring lugs, attach the lug securely to the cable end. 3. Mount the Terminal Clamp

• For BKD-style terminals, position the terminal on the busbar without drilling; secure it using the built-in clamping mechanism.
• For steel frame terminals, align the cable with the busbar holes and fasten using screws and nuts. Ensure the connection is tight to prevent arcing or overheating . 4. Connect the Cable to the Terminal Insert the prepared cable or ring lug into the terminal clamp. Tighten screws or clamps according to manufacturer torque specifications to ensure a reliable electrical connection. Avoid over-tightening, which can damage the busbar or terminal. 5. Verify Electrical and Mechanical Integrity Check that all connections are firm and that the busbar is properly supported within the cabinet. Use insulating covers or finger-safe profiles to prevent accidental contact with live parts . 6. Label and Document Connections Label each terminal and cable according to the electrical schematic for easy identification and future maintenance. Modular terminal blocks often allow quick cross-connections for distributing potential across multiple terminals . 7. Safety Considerations
• Always de-energize the cabinet before making connections.
• Use insulated tools and wear appropriate personal protective equipment (PPE).
• Ensure the busbar and terminals are rated for the system voltage and current to prevent overheating or failure . By following these steps, small busbar terminals can be securely and safely connected in an incoming line cabinet, ensuring reliable power distribution and compliance with electrical safety standards.