- Yes, use ferrules for stranded wire. https://hackaday.com/2018/04/12/to-ferrule-or-not-to-ferrule/
- Does not apply to solid wire.
- Ferrules provide the advanatage of solid wire with stranded wire. Stranded wire is flexible. Solid wire is stiff but usable directly in screw terminals
- Stranded wire should not be soldered prior to crimping the ferrules on