To prevent strand breakage where a cable enters a ferrule, what is recommended?

The use of heat shrink tubing is recommended to prevent strand breakage at the entry point of a cable into a ferrule. Heat shrink tubing provides a robust and durable protective layer that conforms tightly to the cable and ferrule joint upon heating. This tight fit helps to reduce mechanical stress and movement, effectively preventing strand breakage which can occur due to vibrations or bending.

Additionally, heat shrink tubing is designed to create a moisture-resistant barrier, which is particularly beneficial in environments where exposure to water or other contaminants might compromise cable integrity. The combination of physical protection and environmental sealing makes heat shrink tubing the preferred choice for ensuring the longevity and reliability of the connection.

Other options like joint bonding, liquid tape, and electrical tape may offer some level of protection or insulation, but they do not provide the same level of mechanical support or durability as heat shrink tubing, particularly in preventing strand breakage at critical junctions.