A 6-20R is 220V, 15/20A correct? If the outlet is within 75ft of the panel you need to run 12-2 to the outlet from the panel. I would recommend 12-3 as you can then upgrade to a 120/240V outlet later and you are not using a white wire as a hot. If you do use 12-2 wrap the white wire with electrical tape to show it's not neutral. Then just wire the outlet as a normal 220V outlet to a 20A 220V breaker.
That's a 3 phase receptacle. Normally you can wire each phase onto any terminal. The only thing is if there's a rotation involved in the thing that your wiring you need to change any of the two wires to change the rotation.
a shorted out outlet can cause a backfeed on the white wire, an open circuit on the white wire with and electrical appliance plugged in to an outlet can cause the same type of backfeed
just leave the neutral wire as it is and connect the other two !!
it is Outlet that will work with 2 hot wire one black and white.
The wire is normally run above the box height.
Shut the power off to the recepticle. Then take apart the old outlet. Wire up the new outlet. The only difference between the old and the new will be the grounding. If BX armour cable is used, then you will need to take a jumper wire from the grounding nut on the outlet and connect it to the box with a grounding screw. This wire must be green. If romex has been used, then there is a gounding wire that is in the bundle of the wires coming into the box. If it a metal box, then you must use a grounding screw and ground that wire to the boc and then connect that same wire to the outlet. If its a plastic box, then just wire the ground to the outlet. I also like to wrap the outlet in electrical tape, just incase the the wires were to come loose, they would note hit against the box shorting out. Finally, put the pieces back together. And your DONE!
You don't.
a shorted out outlet can cause a backfeed on the white wire, an open circuit on the white wire with and electrical appliance plugged in to an outlet can cause the same type of backfeed
No, that is not unsafe.
Ground wire is loose or disconnected somewhere in that circuit.
# 6 wire
You will need a receptacle that you can wire each outlet separately (not jumpered). You would then wire the switch in series on the line conductor with the outlet you want switchable. Wire the other outlet directly to the power source. You can jumper the neutral from one outlet to the other.
yes
just leave the neutral wire as it is and connect the other two !!
No it is not
Yes, provided that you have a ground wire in the box and that the ground wire is properly connected in the electric panel.
Don't!
it is Outlet that will work with 2 hot wire one black and white.