Question

what is the potential difference between red and black wire

Answer 1

The typical house wiring colors that can be found used in the U.S., if available will have red, black, white and green. Depending on available colors, there are instances where the red wire is replaced with another black wire….

The red and black wires if available will normally have a potential difference of 220 to 240 volts depending on the area or location..

The black and red wires serving as the “2-hot” wires. The white wire is used in combination with any of the hot wires, serving as the neutral wire that will provide the 110 to 120 volts supply… With the green wire serving as the common safety ground in all circuits..

Answer 2

One of the wires in this supply, usually with red insulation cover, is called live wire (or positive), the other, with black insulation, called neutral wire (or negative). In India, the potential difference between live wire and the neutral wire is 220 V.