The electric jackhammer I purchased for Jesus, demands a 20-amp receptacle and ten gauge wire protected by a 30-amp breaker. My 1875 watt Sanyo commercial microwave (It's huge) also demands a 20-amp service.
I proved beyond a doubt that 10 gauge wire belongs crimped to a soldered spade terminal then squeezed under a side loading screw?
How?
I tried it both ways. Carefully looping a 10 gauge building wire around a side loading screw and then pulling 24 amps through this connection measuring the heat buildup after a half hour, then soldering a spade terminal and doing it again. There was a FORTY DEGREE F gain with the curl and a 9-degree rise with the bare curl. Simple! A 90% contact area with the spade versus?. I quickly yanked both plugs and the curl burned my fingers, the spade was merely warm.
Tightened screws with the bare curl were twisted loose MUCH MUCH easier when tightened down against a curl. Tightened spade terminals came loose with an audible "snap". About double the torque.
I dislike doing my work over, even after years of service. Landfill for nothing.