The inside metal part of a cable is usually made of copper and is where, if it is an electrical cable, the electricity is conducted.
Negative battery cable - a solid metal part of the engine
Usually the black one connected to ground (metal part of engine)
cable
It is a safety issue. The reason is that when you are using a wrench to disconnect the battery cable you can easily touch a portion of the car that is grounded. If you were disconnecting the positive + cable first and you accidently touch a metal part the vehicle you will create a massive short circuit with the fireworks involved. The wrench in your hand will become an arc welder. By disconnecting the negative - cable first there is no danger of this happening as touching a metal part of the vehicle will do nothing as you are already working with the ground. Always disconnect the ground cable first and then you can move to the positive cable without worries.
The Decline of Western Civilization Part II The Metal Years - 1988 is rated/received certificates of: Australia:M Portugal:M/12 USA:R USA:TV-MA (cable rating)
The metal which was used in the cable which was inside the insulator. Normally copper is used.
yes a cable!
Cable
Call your local building inspector. You will probably, because of what this building is, have to use Armored Cable, which has a metal jacket, to wire it.
Just like a top post battery. Connect the positive cable to that positive side post and the negative cable to any metal part of the engine. You can connect to the side post if you just try.
A coax cable has a center conductor surrounded by an insulator and then a metal braid. You are likely referring to the braid.
Use a cable toner (Fox and Hound is one brand). It's a two part tool. One has an alligator clip that you can attach to the shielding (don't bother connecting to the center core as... it's shielded). Attach it to the metal part that screws on and you should be fine. The other part is a wand type device that has a variable 'ring' to it the closer you get to the line. Then follow the cable as it snakes through your wall.