If it is in a house generally black wires are hot and white wires are neutral (common). The neutral and ground wires are tied together in the main panel.
With that said if you put 1 lead of your meter (set on AC voltage) on a black wire and the other lead to ground and you get 120 vac that wire is hot. If you get no reading it could be classified as common.
This is the normal wiring practice.
This is a basic assumption without having 1st hand knowledge of the wiring system
If in doubt contact a qualified electrician
Red - active, (commonly known as your live cable) Black - Neutral Green - Earth
In residential 120 volt wall outlet wiring yes the black always goes to the brass/copper screw. White is connected to the silver screw, and ground to the green screw.
Yes, you can run electrical wires in a load bearing wall.
Assuming your under counter lighting is 120v and is fed from a box installed in the cabinet, you need a competent electrician to run a switch loop to a switch in the wall. He/she may need to make holes in your wall you may not want. There is no magic to getting wires in the wall. The wires can be run exposed if the proper materials are used. This would prevent any undesired holes in your wall.
Use a voltage tester held next to the wire. Turn the switch off. If the tester stops beeping then the wires are on that switch.
Red - active, (commonly known as your live cable) Black - Neutral Green - Earth
Be sure that those wires coming from the box are for a recepticle and not a light switch.
The wires should try to connect to the correct colors of the wires that are attached to the wall. I would also read the user manual to find out where everything is attached.
To determine the genotype of a white ram, breed him with black females. Black females are homozygous recesive for the black trait, a. If the ram is homozygous dominant, all offspring will be white (and heterozygous). If the ram is heterozygous, approximately half of it's offspring will be white and half will be black.
In wall speaker wire is useful, as it hides the wires from sight. When a surround sound system is installed, it can lead to a number of unsightly wires appearing around the room. In wall wires hide this problem.
The simplest way is to put the wire there first, while the wall is not yet finished. Then you finish the wall. It is good practice to use plastic tubes for the electrical wires inside the wall. Using the tubes and the old wires, you can pull new wires through the tubes. Electricians use special metal wires to help with this.
it's on the fire wall in a black box with 4 to 6 colored wires.
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Yes. The only complication might be that, if you need to run the wires to the TV inside the wall and the exterior wall is insulated, it may be difficult to fish the wires through the wall cavity.
Shield is ground. White is Neutral, center tap of the transformer from the power company.
To install a doorbell, you will first have to turn off the power to the doorbell. Pull the doorbell unit away from the wall. Disconnect the wires that hold the door bell in place. You will then have to determine whether you want a wired doorbell or wireless. If you are using wireless tuck the wires back into the wall and place the wireless doorbell in place. For a hard wired doorbell, attach the wires to the door bell, push the excess wires into the wall and attach the doorbell to the wall.
Assuming the wires are 2 blacks and 2 whites, and assuming one set provides power and the other set continues the circuit downline, you connect both black wires to the black wire of the lamp holder and connect both white wires to the white wire of the lamp holder. Turn the circuit off before making these connections.