Usually copper, sometimes gold or silver.
A circuit breaker does not have a wire fuse in it.
Yes, you install a GFCI on a 2 wire circuit.
No. In a 20 amp circuit all wire has to be 12 AWG or larger.
No. The wire size is dependent on the circuit protection. If the circuit uses a 20 amp breaker you need to run 12 AWG wire on all devices connected to that circuit.
mini-hydraulic
There is a complete circuit.
A "hot" positive wire has made contact with ground = short circuit.
If you are talking about the light circuit then : The Battery, The bulb and the wire.
The type of wire does not generally determine whether something is a ground wire or not. A wire is a ground wire if it is connected to the ground of a circuit, or the common ground (the reference point of a circuit that is at 0 volts). However, in relation to the grounding rod used to connect the main circuit panel for a house, the rods are almost always made of steel that are copper plated.
A fuse in its simplest form - is simply a short piece of wire that is weaker than the circuit it is protecting. When the current flowing through the circuit exceeds the fuse rating, the fuse wire melts - breaking the circuit.
we can make an open circuit by disconnecting the wire or break the circuit and a closed circuit is made by connecting all wires with the contents of the circuits.
A GFCI can not be used on a three wire branch circuit. It has to be on a single two wire circuit.
The wire comes from the installer or manufacturer of the circuit.
A circuit breaker does not have a wire fuse in it.
The wire in a circuit helps to pass power to the electrical appliances.
Yes, you install a GFCI on a 2 wire circuit.
A circuit needs at least three electrical contacs.