The fiber bushing inserted at the end of a flexible metallic conduit prevents what?

The fiber bushing serves an important protective function when inserted at the end of a flexible metallic conduit. Its primary role is to safeguard the insulation of the cables running through the conduit. Specifically, the bushing prevents rough edges from the cutting of the conduit from damaging the insulation of the wires inside. When a conduit is cut, the edges can become sharp or jagged, which poses a risk of abrasion to the insulation, potentially leading to shorts or failures in the electrical system.

While moisture accumulation, electrical interference, and corrosion are critical issues that need to be addressed in electrical installations, the specific function of the fiber bushing is focused on protecting the integrity of the insulation from physical damage. Thus, it is an essential component for ensuring the reliability and safety of the electrical installation by preventing wear and tear on the sensitive insulation material.