According to standards in use since the mid-1900s, a wire color code identifies the purpose of each wire in an electrical circuit the white wire is always neutral, and when the cable has only two conductors, as most 120-volt cables do, the hot wire is black. Electrical wiring white hot. In standard 120-volt wiring, the hot wire is black, but it can also be red in most cases, you see a red wire in an outlet box only in special circumstances one is that the outlet is a 240-volt one, which requires an extra hot wire another is that the box is on a circuit three-way switch loop.
electrical wiring white hot
The wire that carries the current from the power source to the outlet or receptacle is the hot wire whenever you see a black wire, you know it is hot there are other wires (called travelers) that carry current in more complicated circuits, but black is always hot white to complete the circuit, the current must return to the power source. Hot, neutral & ground wires. in the u.s., standard line voltage wiring is wrapped in plastic sheathed cables and usually has three conductors. this cable is called nmb cable. two of the conductors in nmb cable are covered with plastic insulation—one is black; the other is white. the third conductor is bare copper. the black wire is the hot wire.. The three wires in a standard nmb cable are connected to the three prongs of a standard electrical outlet (properly called a receptacle ). as you can see, the neutral and hot wires are connected to the two vertical prongs at the top of the receptacle (neutral on the left, hot on the right) and the ground wire is connected to the round prong at.
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