So, is 14 gauge OK? I have 15amp dedicated circuit (I think separate circuit breaker for the appliance means dedicated circuit) and the applianceaid.com says 15amp=min.14 gauge house wire for a dishwasher.
My DW installation manual says nothing about ground wire requirements. Only says that I need to connect ground wire to it.
Yes, 14ga. is fine if the other conductors are the same size. Assuming that the insulation is the same between your EGC/green wire and that of the circuit conductors, your green wire should look the same as the others (diameter).
Well, now, there's what's right and what's right and never the twain shall meet.
Jimmy, I finally found the amp numbers on the circuit breaker switches -- it's 15amp for the disposal and 20 amp for the rest of the kitchen. That's why the wires are of different gauges for dishwasher and disposer. I'm gonna use 12 gauge ground wires for both -- can't go wrong with that.
And while I'm at it, will replace 15amp wall switch for the dishwasher that's on the 20amp circuit. The cheap/lazy/careless bastard who installed it probably figured "it's only a switch".. Well, nothing is "only a switch" in my kitchen, mister !!
Anyway I wanna thank everybody for the help I wouldn't get in any store. Trust me, I tried. There are some good folks out there, but quite often they contradict each other, so you don't know which helpful associate to believe.