Length of wires in the distribution box

Wires in a distribution box should be arranged along the shortest path with proper spacing, insulation, and terminal connections to ensure safety, heat dissipation, and compliance with standards.

Wiring Layout and Distance Guidelines

Shortest Path Principle: Wires should follow the shortest possible route from the terminal to the connected device or breaker to reduce voltage drop and minimize interference between circuits. Spacing Between Wires: Maintain adequate separation between wires of different voltage levels or circuits to prevent short circuits and overheating. While exact distances depend on wire gauge and box size, wires should not overlap unnecessarily and should be neatly organized along cable channels or DIN rails.

Wire Stripping and Terminal Insertion: The insulation at the wire ends should be stripped carefully using proper tools without damaging the core. The stripped length (L) should be equal to the terminal sleeve length (L1) plus 1–2 mm to ensure full insertion and secure contact.

Wire Cross-

Section and Type: Main circuits: follow the drawing specifications for cross-section. Control circuits: typically 1 mm². Multi-core cables: 0.

3 mm².

Black R

V type for wires ≥4 mm², white RV type for wires