"and WAGO Corporation, the electrical component manufacturer"
Sucks to be any of the YouTubers influencers today telling everyone they should use WAGO connectors in all their walls.
Seriously though, impressive to trace the issue down this closely. I am at best an amateur DIY electrician, but I am always super careful about the quality of each connection.
The WAGO connectors typically used in home wiring have a transparent plastic shell which lets you see whether the wire made it all the way through the spring clip. The ones shown in the NTSB video had an opaque shell around the spring clip.
I don't see anything in the report that suggests the connector failed. It sounds like the installer failed. Trust me, they can screw up twist connections too :)
Sucks to be any of the YouTubers influencers today telling everyone they should use WAGO connectors in all their walls.
Seriously though, impressive to trace the issue down this closely. I am at best an amateur DIY electrician, but I am always super careful about the quality of each connection.