If this is a home wiring question and the wires are black and white then black is Hot and white is Neutral. If you also have a red wire, it is the other hot wire, and either the black or the red wire to the white one would be 120 volts, and red to black would be 240 volts.
Assuming the wires are the correct gauge for application and breaker you use black and white wires as hot. Put red electrical tape on each end of white wire and connect red and black to the breaker output and bare wire to ground lug in panel. At receptacle connect black and red to hot contacts and bare wire to ground lug.
Load (or hot wire, usually black or red), Neutral, (white), and ground,(green) wire.
On a 3 wire dryer cord there is no green wire. The white wire coming from the outlet is connected to ground or the green screw. The black and red wires are the hot wires.
You will have to run new electrical wire or a single ground wire back to the panel (though the former is highly recommended). A GFCI outlet will cut off the circuit if it senses voltage leaking to ground. If there is no ground wire, it will not function.
hot wires are black, white wires are ground
If this is a home wiring question and the wires are black and white then black is Hot and white is Neutral. If you also have a red wire, it is the other hot wire, and either the black or the red wire to the white one would be 120 volts, and red to black would be 240 volts.
In a typical dryer plug, the two hot wires are usually the red and black wires. The white wire is typically the neutral wire and the green or bare wire is the ground wire. Always consult the manufacturer's instructions to be sure.
Your black wires are your hot wires. The white is your neutral or common. It would be best to run an equipment ground (green wire) too.
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.
The wires for the left front window are red/black for up and green/black for white. For the right front window, the wires for up are red/white and the wires for down are green.
Assuming the wires are the correct gauge for application and breaker you use black and white wires as hot. Put red electrical tape on each end of white wire and connect red and black to the breaker output and bare wire to ground lug in panel. At receptacle connect black and red to hot contacts and bare wire to ground lug.
It sounds like the black wires may be hot wires coming from the power source and the white wires could be neutral wires. The black wires are typically connected to the fixture's black wires. If the black wires aren't connected and capped off, the fixture won't receive power. It's important to properly connect all wires to ensure the fixture functions safely.
No, it is not normal to read 120V between the black and white wires, or between the black and ground wires. This could indicate a wiring issue or a fault in the electrical system that needs to be investigated and addressed by a qualified electrician to ensure safety.
In the hot tub junction control box there should be three terminals. The terminal block might say line voltage. This is where the incoming "hot" wires connect. The red and black wires will probably be for the 240 volt pump motor and one of the two "hot" wires and the white wire will be used for the controls that control the pump.
If the house wiring does not have a white wire, you can cap off the white wire from the track light with a wire nut and electrical tape if necessary. The white wire is typically used as the neutral wire, but if it's not present in your house wiring, capping it off safely will ensure the track light functions correctly with the available black and green wires.
No, the black wire is typically used as the hot wire in a standard electrical circuit in North America. The neutral wire is usually white. It is important to always verify the proper wiring colors and configurations, as they can vary by region and application.