| Bolt Size | Torque at 20°C (Dry) | Torque at 20°C (Lubricated/Wet) | | :--- | :--- | :--- | | M8 | 18 Nm | 12 Nm | | M10 | 30 Nm | 22 Nm | | M12 | 50 Nm | 35 Nm | Note: For hot applications, retorque after the first heat cycle (when the system hits 80°C and cools down).
This article extracts the core principles from the INDAL technical manuals to provide a comprehensive guide on designing, installing, and maintaining aluminium busbars in high-temperature environments.