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The presence of the red wire in a light switch situation usually involves a 3 way switch. The light itself would only have the black and white running to it but the switches have the extra wire between them for the traveler.
See the Related Link shown below for a diagram, or just Google "3 way switch diagram".
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DevinYou can't operate 220 V equipment from 110 V power, and therefore cannot do what you are asking.
If on the other hand you want to run 110 V equipment from 220 V power, don't use the red wire. However to meet the electrical I think you are required to add a circuit breaker or fuse on the new 110 V branch circuit.
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I see only a red and a green wire coming out from ceiling box. What are they and how do you connect them to a ceiling light?
The red and green wires are likely the live and ground wires, respectively. To connect them to a ceiling light, connect the green wire to the ground screw on the light fixture and connect the red wire to the live wire on the fixture. Make sure to turn off the power before working on the wiring to avoid any accidents.
How do you wire a light switch with only black and red wires?
The black wire is typically the hot wire that carries the electrical current, while the red wire is often used as a traveler wire. Connect the black wire to one terminal of the light switch and the red wire to the other terminal. Make sure to turn off the power before wiring the switch to avoid electrical shock.
How do you connect red white black and green form USB to a two wire cable having red lack?
You can connect the red wire from the USB cable to the red wire of the two-wire cable. The black wire from the USB cable can be connected to the black wire of the two-wire cable. As for the white and green wires from the USB cable, since the two-wire cable only has a red and black wire, you can leave the white and green wires unconnected as they are not needed in this case. Just make sure to insulate the unused wires properly to avoid any short circuits.
What does the red wire do in the ceiling?
You connect it with the same hot wire as the black wire in the fan. It is intended to be tied to a different switch. One for the fan, and one for the light kit.
How do you install a doorbell with four wires both having black and red wires?
Connect the black wire from the transformer to the red wire going to the front door button, and the black wire from the chime to the red wire going to the back door button. Connect the red wire from the transformer to the front door button's black wire, and the red wire from the chime to the back door button's black wire. This setup should allow the doorbell to function properly.
