In cable management, the spacing between hook-and-loop (Velcro) fastening points is not a fixed value. It must be determined by taking into account the cable diameter, the number of cables in each bundle, and the total weight of the bundle, with on-site technicians applying their own judgment based on actual conditions. As a general rule, the thicker the cable, the larger the number of cables bundled together, and the heavier the overall bundle, the closer the fastening points should be spaced; conversely, when cables are thin, few in number, and light in weight, the spacing may be appropriately increased.

In practice, for thick cables or large bundles containing a considerable number of cables, a fastening spacing of approximately 10 cm is recommended. Heavy cables have low flexibility, and if the fixing points are too far apart, problems such as sagging, loosening, and bulging between tie points are likely to occur. Under prolonged stress, the cables may also pull on the connectors at both ends, compromising connection reliability. For thin cables or small bundles with fewer cables, the spacing may be increased to approximately 50 cm. Light, flexible cables are not prone to noticeable deformation under their own weight, and overly dense fastening would add unnecessary labor while also hindering heat dissipation and future adjustments.

In addition, at points where cables bend or branch off, at the base of connectors, and at the entry and exit points of cable trays, racks, or cabinets, additional fastening points should be placed close by on both sides regardless of cable diameter, so as to avoid stress concentration. When bundling, the fastening should be neither too tight nor too loose—the guiding principle is secure fixation without deforming the cable—and a certain amount of slack should be left to facilitate later additions, replacements, and maintenance.

The final spacing should still be determined by technicians based on the actual diameter, weight, routing, and installation conditions of the cables on site, striking a balance between reliable fixation and ease of maintenance.