Step-by-Step Guide to Wiring a Ceiling Fan: Dimmer Switches, Remote Controls, and Compliance with IEC & NEC Standards

6 Ways to Wire and Install a Ceiling Fan using Switches

Installing and wiring a ceiling fan is a very basic task even a beginner can easily connect a ceiling fan to the household wiring connection. As lots of complex ceiling fan wiring diagrams are available on the internet, we will try to present the very basic connections of fans using different types of switches and dimmers control for lights according to IEC and NEC regulations. 

We will be showing the different methods of a ceiling fans connection i.e.

• Ceiling Fan with Speed Regulator and Single Way Switch.
• Ceiling Fan and Light Switch with Fan Speed Regulator and Light Dimmer Switch controlled by a common Single ways switch.
• Ceiling Fan control by single way switch and dimmer and light control by SPST switch.
• Ceiling Fan control by Pull Chain / String and Light Control by SPST Switch.
• Ceiling Fan with Remote Control and Receiver Wiring connection
• Ceiling fan control using smart Wi-Fi Switches

Note: The wiring colors in this tutorial are for illustration and clarification only i.e. these colors used in this guide are only for guidance and do not necessarily represent regional variance. See the bottom notes for US and EU Wiring color codes (NEC and IEC). In addition, some manufactures may use different wire colors, this way follow the regional color coding or check the user manual guide for clear explanation. If still not sure, contact a licensed electrician for proper installation.

Disclaimer: These diagrams(s) are to be used as a guide only. Use of this guide is at the installer risk. We Electrical Technology and the author of this guide accept no liability for injury, loss or damage resulting from use of this guide. For proper installation, you may contact the licensed electrician. Read carefully the safety precautions at the end of this guide.

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First of all, switch off the main circuit breaker to disconnect the power supply before beginning the wiring installation of a ceiling fan. Each method has been explained with a step by step guide and related diagrams.

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Wiring a Ceiling Fan with Single Way Switch & Speed Regulator Switch

In this tutorial, we will wire and connect the ceiling fan to the power supply and control it through single way switch which further control the fan speed by dimmer or speed control regulator switch.

To to this, follow the following instructions:

• Ground / Earth Wire: Connect the Green / Yellow wire from the fan to the Green / Yellow from the breaker in the distribution board (or main panel) which is further connected to grounding / earthing wire.
• Neutral Wire: Connect the blue (White in US) wire from the ceiling fan to the incoming neutral wire.
• Line, Live or, Hot or Phase Wire: Connect the incoming brown (Black in US) phase wire to the SPST (single pole single through) switch and further to the fan speed regulator switch i.e. both single way switch and fan speed controller or dimmer switch are in series. Finally, connect the live i.e. brown wire from the fan to the dimmer switch. This way, the single way switch, dimmer switch and fan are connected in series through live wire. The fan is connected to the power supply now which is 120V AC in the US and 230V in the UK and EU.
• Use wire caps (wire nuts) for bare conductors and joints and tuck the wires back in the box.
• You can now turn on the main circuit breaker switch to test the fan with different speeds by turning and rotating the fan dimmer switch.

The following is the same wiring diagram as the dimmer switch and single way switch are enclosed in a combined box.

IEC Wiring Diagram

NEC Wiring Diagram

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Wiring a Ceiling Fan & Light with Speed Regulator and Light Dimmer Switch Controlled by a Common SPST Switch

In this case, we have four wires from the ceiling fan terminal box. The brown wire as “live” to the fan, the black  wire as “live” to the light bulb, the blue wire as neutral and green / yellow as ground wire in IEC. While Black is Live, White is Neutral and Green/Yellow or bare conductor is ground in NEC,

A single way switch controls both the light dimmer switch and fan speed control regulator switch in this circuit as shown below. To do this, follow the instructions below:

• First of all, connect the green/ yellow as a ground wire to the incoming ground / earth wire.
• Now, connect the blue wire as neutral to the incoming neutral from the main DB.
• Connect the incoming brown as live wire to the single way switch. The other end of the SPST switch should be connected to the combined dimmer and speed regulator switch. Now connect the upper left end of the regulator switch to the brown wire of the fan and connect the upper right end of the dimmer to the black wire of light.
• Use wire caps for joints and bare conductors and pull back the wires in the box and turn on the main switch to check the light and speed of fan and bulb by rotating both the fan and light dimmer switches.

IEC Wiring Diagram

You can also use separate light dimmer switch for bulb and speed control regulator for ceiling fan as follow.

NEC Wiring Diagram

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Wiring a Ceiling Fan and Light by Separate Switches and Dimmer Switch

In this wiring tutorial, We will be controlling the ceiling fan by a single way switch and dimmer switch while the light bulb will be controlled by a separate switch. To do so, see the following instructions:

• As mentioned above, connect the green / yellow wire from the fan to the ground wire from the main board.
• Now connect the blue wire from the fan as neutral to the blue neutral from the distribution board.
• Connect the brown wire as live to the combo of single way switch and fan speed regulator ( same enclosed box where single way and regulator switch are in series). A joint (use wire nut) from the incoming live (brown) should be taken and connected to the separate single way switch which is for light ON/OFF control. The brown wire from the fan should be connected to the single way switch and fan speed dimmer switch while the black wire should be connected to the separate single way switch for light control.
• Use wire caps for joints and bare conductors and pull back the wires in the box and turn on the main switch to check the light and speed of the fan by rotating the fan speed dimmer switch.

IEC Wiring Diagram

NEC Wiring Diagram

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Wiring a Ceiling Fan with Pull Chain & Light Control by Separate SPST Switch.

In this scenario, we will control the ceiling fan speed by pulling the chain / string switch and light bulb by separate single way switch. To do this wiring, see the following steps.

• Connect the Green / Yellow Wire as ground wire from the fan to the household earth wire.
• Connect the blue wire from the fan to the household main distribution neutral wire.
• Connect the brown wire as a line from the fan to the upper end of the pull chain. The lower end of the pull string switch should be connected to the line from the main distribution board. With the help of a wire nut, a joint can be taken from the incoming line and should be connected to the single way switch which is further connected to the black wire of the ceiling fan.
• Use wire caps for joints and bare conductors and pull back the wires in the box and turn on the main circuit breaker to check the light and speed of the fan by pulling the chain string.

IEC Wiring Diagram

NEC Wiring Diagram

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Wiring a Ceiling Fan with Remote Control & Receiver

In this wiring connection, you can control a ceiling fan (ON/OFF and speed control) through remote control or smartphone by installing a receiver with antenna at the fan box. If you have a built-in light bulb in the fan, you can control both of them remotely; otherwise, only the fan can be connected to the receiver terminals.

To control a ceiling fan through remote, follow the following wiring instructions:

• First of all, turn off the main breaker to disconnect the power supply.
• Now connect the green / yellow wire to the ground wire from the household DB board.
• There are three outgoing and two incoming wires in the receiver. In case of a built-in light bulb in the fan, connect the black wire from the fan to the black in the receiver.  Do the same i.e. blue to blue(neutral) and brown to brown (live) from the fan to the receiver and then to the incoming supply wires through a series single way switch as shown below.
• Insert the batteries in the remote and turn on the main breaker to provide the power supply and check as things should work as expected.

IEC Wiring Diagram

 

• Related Post: Three Phase Electrical Wiring Installation in a Multi-Story Building

Wiring a Ceiling Fan Using Smart Wi-Fi Switches

We will post a separate tutorial on this and link back to this post.

NEC and IEC Wiring Color Codes:

We have used Black & Brown for Live or Phase or Hot , White & Blue for Neutral and Green/Yellow for Earth/Ground Wire. You may use the specific area codes i.e. IEC – International Electrotechnical Commission (UK, EU etc) or NEC (National Electrical Code [US & Canada] where;

NEC:

Single Phase 120V AC:

• Black = Phase or Line
• White = Neutral
• Green/ YELLOW  = Earth Conductor

Three Phase 208 AC:

• Blue = Phase 1 or Line 1
• Orange = Line 2
• Black = Line 3
• White / Gray = Neutral and
• Green/ YELLOW  = Earth Conductor

Three Phase 277V & 480V AC

• BROWN = Phase 1  or Line 1
• ORANGE = Line 2
•  YELLOW  = Line 3
• GRAY = Neutral “N”
• GREEN, BARE or GREEN/   YELLOW  = Ground “PG”

IEC:

Single Phase 230V AC:

• Brown = Phase or Line
• Blue = Neutral
• Green = Earth Conductor

Three Phase 400 AC:

• Grey = Phase 1 or Line 1
• Black = Line 2
• Brown = Line 3
• Blue = Neutral
• Green = Earth Conductor

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Safety Precautions

• Electricity is our enemy, if you give it a chance to kill you, Remember, they will never miss it. Please read all caution and instructions while doing this tutorial in practical.
• Disconnect the power source before servicing, repairing or installing electrical equipment.
• Use the proper cable in size with this simple calculation method ( How to determine the suitable size of cable for Electrical Wiring Installation)
• Never try to work on electricity without proper guidance and care.
• Work with electricity only in presence of those persons who have good knowledge and practical work and experience who know how to deal with electricity.
• Read all the instructions and cautions and follow them strictly.
• Doing your own electrical work is dangerous as well as illegal in some areas. Contact the licensed electrician or the power supply company before practicing any change in electrical wiring connection.
• The author will not be liable for any losses, injuries, or damages from the display or use of this information or if you try any circuit in the wrong format. So please! Be careful because it’s all about electricity and electricity is too dangerous.

In the above ceiling fan wiring installation tutorial, we showed six methods to wire a ceiling fan and will add more wiring tutorials in the future. If you know a specific method to do so, let us know in the comment box below.