Didn't find any 12-2 with black, red ground at the home center.

Wiring a few 220V, 20AMP outlets for the workshop - dust collector, compressor (smaller craftsman- hopefully I can convert it from 110V - will check manual). table saw, etc.

Dust collector and compressor will get dedicated circuits. Will run two additional circuits each to 2-3 outlets in the shop for table saw etc.

None of the equipment requires a 4 prong plug, so doesn't seem worthwhile to run the 12-3 wire. I won't be running any 110V outlets on these circuits. Am I wrong?

Can I get 12-2 in black/red/ground? Is it OK to use red electrical tape on the white wire to indicate that it is hot?

Should I use the 12-3 and terminate the white wire (wire nut?)

Thanks for the help.