No, people should not connect red and black wires together in a ceiling fan. Connecting wires of different colors without proper knowledge and understanding of electrical systems can be dangerous and lead to electrical hazards.
In a typical electrical setup, red and black wires often have different functions. While wire colors can vary based on regional or national electrical codes, red wires are commonly used as the secondary live wire, and black wires are typically used for the primary live wire or for carrying electricity from a switch.
When installing or troubleshooting a ceiling fan, it is essential to follow the manufacturer's instructions and consult a qualified electrician if you are uncertain about the wiring. Incorrectly connecting wires can result in electrical shock, fire, or damage to the fan and other electrical components.
If you need to install or repair a ceiling fan, always prioritize safety and consider hiring a licensed electrician to ensure the job is done correctly and in compliance with electrical codes. Electrical work can be hazardous, and it's essential to have the proper knowledge and experience to handle it safely.