Cables entering metal frames of motors, splice boxes, and electric compartments must have what?

Cables entering metal frames of motors, splice boxes, and electric compartments must have proper fittings to ensure safety and functionality. Proper fittings serve critical purposes; they prevent moisture and contaminants from entering the compartments, which can lead to electrical failures or hazards. Additionally, these fittings help secure the cables, providing strain relief and reducing the risk of damage to the cables over time.

Using appropriate fittings also complies with safety regulations and standards outlined by organizations such as the National Electrical Code (NEC) and other industry guidelines, ensuring that electrical installations are safe, reliable, and capable of handling the operational demands placed upon them. This is vital in preventing accidents and maintaining the integrity of electrical systems in mining operations, where the environment may be particularly challenging.