What requirement is crucial for the installation of overhead cable supports?

Providing a minimum clearance is essential for the installation of overhead cable supports because it ensures safety and functionality. Adequate clearance helps to prevent physical damage to the cables from environmental factors, such as falling debris or water, and minimizes risks associated with electrical hazards. Clearance is particularly important in environments where there may be moving equipment or foot traffic, as it reduces the chance of accidental contact with the cables. Additionally, maintaining the specified clearance prevents interference with maintenance activities and allows for proper air circulation around the cables to dissipate heat.

While adjustability, material composition, and color can also be factors in certain contexts, they do not hold the same level of critical importance as ensuring a minimum clearance for safety and compliance with regulations.