Wire Nut
Senior Member
There’s foot notes in the NEC that allow #2 aluminum to carry 100 amps in a residential setting at 75 degrees. Little did I know, found out the hard way, there’s also foot notes that don’t allow 4/0 to carry 200 amps in a commercial setting. Been doing it wrong for yearsI looked at the 60C chart for 75 amps... it is rated at 100A at 90C
I like a bigger conductor... it costs a bit more upfront, but you don't have to worry about it not being enough if you stretch the load on it a little bit