Butt splice connector to join 10 gauge to 12 gauge wire?

Mike134 wrote:

jdc1 wrote:
Do it right....solder them together, then use the heat shrink.

Solder is good but a good crimp is just as reliable. How can I say for certain? I have yet to see a building I wired the past 40 years using crimps burn down.

How often do you drive those buildings down a pothole mired freeway at 55mph? LOL. Yea, I get the push-in outlet thing (42 years as a general contractor), but moving vehicles are not the same as a stationary building.