What is the main purpose of a guard strip used in cable installation?

The main purpose of a guard strip in cable installation is to protect from physical damage. Guard strips serve as a protective barrier that shields cables from abrasion, impact, or other potentially damaging forces in environments where cables are exposed to mechanical stress or where they may be likely to be struck or scraped. By providing this level of protection, guard strips help prolong the life of cables and maintain their integrity, thereby ensuring reliable performance in electrical systems.

While options related to electrical interference, insulation, and marking cable pathways are important considerations in electrical installations, they do not encompass the primary function of guard strips, which is specifically geared toward safeguarding the physical condition of the cables.