Usually there is inside the fuse box a metal bolt and nut provided or a rail in case the box itself is made out of plasic. Typically there is a sticker with the earting symbol next to it(http://www.kpsec.freeuk.com/symbol.htm) Join the green/yellow cable to that one, or the color used in your country
Assuming the wires are the correct gauge for application and breaker you use black and white wires as hot. Put red electrical tape on each end of white wire and connect red and black to the breaker output and bare wire to ground lug in panel. At receptacle connect black and red to hot contacts and bare wire to ground lug.
If you mean 2 bare copper wires those are the ground wires. Tie them together and then connect the light fixture ground wire which will be green or bare copper to those ground wires.
If there is no ground wire connect the ground wire to the neutral wire.
Yes, if it is not an insulated wire. If it is bare copper it is always ground. But the hot and neutral wire are also copper, they are just insulated.
Some older wire does not have a ground. All you can do in that case is use a jumper wire to connect the ground to the neutral.
Black wire to copper screw, white wire to silver screw, bare copper ground wire to green ground screw.
Grounding of I and C? to ground something is to have a wire that goes to a grounded connection the bare wire in a normal wire set.
In a 240V cable, the black wire is the hot wire and connects to one of the hot prongs on the dryer outlet. The white wire is the neutral wire and connects to the neutral prong. The bare copper wire is the ground wire and connects to the ground prong on the outlet.
Connect the white wire from the European oven to the white wire in the US receptacle. Connect the black wire from the European oven to the black wire in the US receptacle. Connect the green wire from the European oven to the bare wire in the US receptacle. The green wire serves as the ground wire since you don't have a separate ground wire in the US receptacle.
Assuming the wires are the correct gauge for application and breaker you use black and white wires as hot. Put red electrical tape on each end of white wire and connect red and black to the breaker output and bare wire to ground lug in panel. At receptacle connect black and red to hot contacts and bare wire to ground lug.
If you mean 2 bare copper wires those are the ground wires. Tie them together and then connect the light fixture ground wire which will be green or bare copper to those ground wires.
Green typically represents a ground so you would connect to the bare wire at receptacle or look for a green headed screw.
A ground wire can be bare because it is not a current carrying conductor. It is at the same potential as all the rest of the metallic conductive objects that make up the electrical system that the ground wire is grounding.
If you mean a bare copper wire, that is the "ground" wire.
If there is no ground wire connect the ground wire to the neutral wire.
Could have a short in your wire, a bare wire touching bare metal could cause it to ground out.
If you are connecting 120 volts, you connect the black wire to the breaker, white wire to the neutral bar, and ground wire to the ground bar. If you are connecting 240 volts connect the black & white wires to the breaker, & ground wire to the ground bar.