Yes. Connecting a ceiling fan’s black wire to a red wire is standard if you are trying to use a wall switch to control the light kit independently from the fan.
Red and black wires from the ceiling generally do not go together; they are usually separate hot wires intended for independent control of the fan and light. Typically, the black is for the fan motor and the red is for the light, both sharing a common white neutral wire.
Red and black wires are commonly used together in electrical circuits, with red wires serving as secondary hot wires and black wires as primary hot wires. This combination is often seen in 240-volt outlets, where the red wire is used as a secondary hot wire, and the black wire is used as the primary hot wire.
In order for the light to be controlled by its own switch, the wiring between the switch and the fan unit needs a fourth wire, a red wire, to carry power to the light kit.
Black (neutral) Red (live) Green and yellow (earth)
A red wire is a secondary "hot" (live) wire. Its destination depends on your specific setup:
In standard switch wiring, red is the traveler wire in a three-way switch circuit. Travelers carry current between the two three-way switches, allowing a light to be controlled from two locations. The red and black travelers alternate which one is energized depending on switch position — both should be treated as hot.
Mistakes often happen if wire nuts are not securely fastened, or if wires are twisted together without the right connectors. These missteps may seem minor at first, but loose or mismatched connections can cause intermittent operation, overheating, or power loss to your fan and lights.
When installing a ceiling fan with a remote, the red wire (usually for a second wall switch) is typically capped off with a wire nut and left in the ceiling box. The remote receiver handles both fan and light control, so only one hot wire (black) is needed to power it.
Yes, you can safely cap off a red wire in many electrical scenarios (such as capping a traveler wire for a ceiling fan or a half-hot outlet), but it depends on its purpose.
"Red and Black is older type wiring but if it was installed correctly and regularly tested and inspected (EICR inspections) it should be OK. If you have no records of testing I would getting your property EICR inspected by a qualified electrian." "Yes it's the old colours. Red is live black is neutral."
The hot (usually black) wire goes to one connection on the switch. It doesn't matter which connection with a simple switch, but it may matter on a smart switch, dimmer, timer, motion sensor, etc. The switched hot (usually red) wire goes to the other connection on the switch.
Whether red and black wires can go together depends entirely on the context of your electrical project. In almost all standard wiring, both red and black wires represent "hot" (live) wires.
6 Most Common Electrical Wiring Mistakes
Your 3 reds in a connector are the permament lives. The three blacks are the neutrals. The single black will be your switch wire and should be tagged with a red/brown tape and the other red will be a switched live connection between the two lights.
Connecting ceiling fan wires is a straightforward process, but safety is the most important step. Always turn off the power at the circuit breaker before touching any wires, and confirm the power is off using a voltage tester.
A red wire is a secondary "hot" (live) wire. Its destination depends on your specific setup:
In a ceiling fan electrical box, the red wire typically acts as a secondary "hot" wire. It is usually controlled by a separate wall switch, allowing you to operate the fan motor and the light kit independently.
Wire a 5-wire ceiling fan by pairing the fan's colored wires (Black, Blue, White, Green, and Red) with the corresponding supply wires in your ceiling junction box. Secure connections with wire nuts, ensuring the ground wires (Green/bare copper) are tied together first for safety.
If the wiring isn't properly connected, the fan might not respond to the switch at all, may work intermittently, or could turn on and off at random. This can make it hard to control the fan and may damage the motor or other parts over time.
The "sock trick" for ceiling fans is an incredibly fast, mess-free way to clean fan blades. By slipping a standard sock over each blade, you can wipe away built-up dust while trapping the dirt inside the sock, preventing it from raining down on your furniture or floors.
Mixing up line (incoming power) and load (outgoing power) wires can lead to malfunctions or severe safety hazards. The consequences depend on the device you are wiring.
In answer to your question, yes, if your wiring is in black and red instead of the current harmonised colours (Brown + Blue) then it is likely you would need a rewire to bring your electrics and working up to the current standard.
Electricians keep one hand in their pocket—a practice known as the "One-Hand Rule"—to prevent electric current from traveling across their chest and through their heart.
Common Mistakes When Reading Wire Colors
Switch legs in home wiring may use red for secondary live connections, not positive. Lighting circuits can have red wires that are switched hot, not always carrying constant voltage. Old installations or DIY repairs might use inconsistent color codes.