The day I found out my wire nut method was costing me time and money
For years, I'd twist my wire nuts on by hand, then give them a little tug to check. I thought that was good enough. Then, on a big apartment rewire job in Spokane, the lead guy saw me do it. He said, 'You know you're supposed to pre-twist the wires with linesman pliers first, right?' I argued that the nut does the twisting. He showed me on a scrap piece: the hand-twisted connection had way less copper contact inside the nut. He said a bad connection there can cause heat over time, and that's a call-back I don't want. It made me think about all the boxes I'd done that way. Do you guys always pre-twist, or is the wire nut alone enough if you crank it down hard?