What type of wire nuts are recommended for #6 and #8 wires for oven installation?
I had to join some #6 and #8 wires in a nut. Took a few minutes of looking, but I found a small 6-pack of nuts that said it would support up to two #6 wires. The only thing different about these is they're much larger than the ones you'd normally use. There's no real terminology to look for, but read the bags to find sizing.
There's nothing special about twisting I found. Both were stranded, but they easily wrapped around one another and the nut screwed on like any other wire nut.