[Al Skierkiewicz]

Tristan's first link is something everyone who chooses to solder should know.
We teach our students to add solder from the terminal end of the connector and then to know when too much solder is causing the wicking action mentioned in the article. Please be advised that the Amp discussion in most cases refers to the practice of using a pneumatic, bench mounted crimper. The concept is the same but that tool is much more precise and repeatable than most teams can afford. The recommendations are also for long term (years) stability and function. The wicking action as discussed causes the solder to effectively produce a solid wire connection under the wire insulation for some length away from the terminal. In some case, this could be an inch or more. This effectively takes away from the benefit of stranded wire on moving objects and transmits vibration into the component (speed controller). Please note in the dicussion that under no circumstances should you dip (tin) the wire prior to termination. This will prevent any tool from properly forming a cold weld between wire and terminal. This is the same reason wires should not be tinned prior to insertion in the PD. The terminals used there are meant for stranded wire. The wire will conform to the terminal when inserted. There are ferrules specifically designed for use in the WAGO terminal that are crimp style. These are used primarily in manufacturing to speed assembly. You may use WAGO ferrules only with the PD as other types are not designed for the current specification of the terminal.