Mexicans are very interesting.
The copper is a good conductor of electricity. While the insulating plastic covering of the wire prevents bare wires touching and creating a short, or shocking (electrocuting) a person should the bare wire be touched with bare hands.
Cu110 compositon
when a steel nail is held in hot flame it gets burned and by reacting with oxygen and becomes iron-oxide. so, it becomes dull.
#6AWG
oxidation
After my opinion the fresh surface of copper is not dull.
With a good quality brass /copper cleaner like Never Dull
The traveler decides when traveling becomes dull. If the traveler keeps their spirits and their sense of adventure up, there is not guarantee that the journey will ever become dull.
Mexicans are very interesting.
If you mean a bare copper wire, that is the "ground" wire.
The copper is a good conductor of electricity. While the insulating plastic covering of the wire prevents bare wires touching and creating a short, or shocking (electrocuting) a person should the bare wire be touched with bare hands.
The colour is the most obvious. Lead is dull grey and silvery when freshly cut while Copper is a dull reddish pink and shiny pink when freshly cut.
The going price for scrap copper varies depending on what is. Bare wire, copper tubing, flashing, etc. Pure bare copper was $328 per hundredweight in February 2013. For more cost of copper follow the related link below.
Cu110 compositon
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.
when a steel nail is held in hot flame it gets burned and by reacting with oxygen and becomes iron-oxide. so, it becomes dull.