in a home no
in a car yes
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No, the ground wire should be attached to the green or bare copper wire. The black wires are typically live or hot wires and should never be connected to the ground wire.
In home wiring, hot wires are typically colored black or red, while ground wires are usually green or bare copper. In computer wiring, ground wires are typically black, while hot wires are often colored according to industry standards, such as red or yellow.
black wire is hot wire .And the white is the common or white is ground. Depends on what your talking about in an outlet or car battery. In a outlet the ground wire is green or bare copper. neutral is red and hot is black (I remember it by hot can kill you so black is death) if I am not mistaken. As for a car battery i think it's the opposite red is hot and black is neutral.
To attach a 4-wire power cord to an electric dryer, first remove the old cord by disconnecting it from the terminal block inside the dryer. Then, connect the new cord by matching the cord's wires to the terminal block wires (red and black to hot, white to neutral, green to ground). Secure the connections with the appropriate screws and cover with the terminal block access panel before plugging in the dryer.
To hook up the electrical plug with white, black, and ground wires to the house wires with white, black, red, and ground wires, you must connect the white wire from the plug to the white wire in the house, the black wire from the plug to the black or red wire in the house (check the wiring standard), and the ground wire from the plug to the ground wire in the house. Make sure to turn off power before making any connections and follow proper safety precautions.
You use a known ground and check them for voltage. You can use an extension cord to reach from a ground to the wires you are testing. You are not putting it in an outlet, just to connect you to a ground.