for high current crip connections life depends on the type of terminal used...

copper ring terminals using screw to the whatever like a switch , is much better than steel or alunimum spade slide on connectors.....

the poorer the connection causes resistance which heats the connection, which increase the resistance and before you know it the wole mess overheats and the connection opens. a little smoke gets lots of attention.

this occurs all the time on the machines i service for a living. I carry a roll of 14 gauge wire for splicing, and keep some 12 gauge for selected locations