ELECTRIFY YOUR KNOWLEDGE: THE ULTIMATE ROCKER SWITCH WIRING HANDBOOK

Extension cords have evolved significantly. These electrical components are available in multiple designs. They also have several safety and convenience features, such as surge protectors and switches.  

Surge protectors safeguard your valuable electrical appliances from blowing up during erratic spikes in the electric current. At the same time, an extension cord with switch lets you conserve energy by controlling how power flows to the connected appliances.  

Many switched power strips utilize a rocker switch. This post shall serve as a handbook to rocker switches, focusing on how to properly wire them. 

Unpacking Rocker Switches 

A rocker switch is designed with an operational button that you can press on either side to connect or disconnect an electrical circuit.  

Rocker switches are commonly used as On/Off switches on the primary power inlets for various home appliances and electronic devices. They’ve also become a staple component of many power cords.  

A rocker switch operates more like a seesaw, which explains why it’s alternatively called a seesaw switch. Pressing on the switch elevates one side while depressing the other. This consequently opens a circuit on the lowered side while closing it on the raised end. 

Rocker Switch versus Toggle Switch 

“Rocker switch” and “toggle switch” are some of the most commonly confused electrical terms. While often used interchangeably, the two differ in design and application.  

A rocker switch is designed with a pivoting actuator that oscillates back and forth around a fixed axis. You activate the switch by pressing it in either direction.  

On the other hand, a toggle switch features a handle or lever that moves vertically or horizontally, depending on the design. Flipping the lever or handle in either direction allows an On/Off transition.  

Rocker and toggle switches also differ in their applications.  

A rocker switch is ideal for basic On/Off electrical functions. The switch is best suited for appliances that operate on visual and tactile feedback, such as switch power cords, surge protectors, coffee makers, etc.  

Toggle switches are more versatile and can support simple On/Off operations and multi-position switching. 

Features of a Rocker Switch

A rocker switch isn’t difficult to identify. The switch stands out for its push button that seamlessly connects or disconnects an electrical circuit.  

Most rocker switches feature three symbols.  

At the center of the button is a circle. On one side of the circle is a horizontal line that denotes the ‘On’ position, while on the opposite side are two parallel lines for the ‘Off’ position.  

Wiring a Rocker Switch  

1. Know the Types 

Rocker switches come in different styles, depending on the intended application.  

One of the most common types of rocker switch is the Single Pole, Single Throw (SPST) switch. SPTSTs come with input and output functions. They’re suitable for circuits that require a single electrical connection between the power input and output.  

Other rocker switch types include 

• Single Pole and Double Throw (SPDT) - A rocker switch with a single input and two outputs, allowing a seamless connection between two different output circuits. 
• Double Pole, Single Throw (DPST) - A switch designed with two ports and a contact in each, enabling them to simultaneously operate two different inputs and outputs. 

• Double Pole, Double Throw (DPDT) - A rocker switch with six separate connections and two distinct input terminals. 

2. Choose Between an AC and DC Circuit 

The speed of a rocker switch’s On/Off transition depends on whether it uses alternating current (AC) or direct current (DC).  

When using an AC rocker switch, the current height and direction change twice with each flick of the button, causing a corresponding voltage fluctuation. However, DC sockets retain their amplitude, preventing voltage interruption.  

The conventional wisdom is to choose a rocker switch rated for 240 VAC if operating electrical systems with backup power and 12 or 24-VDC switches for low-voltage applications. 

3. Understand the Terminals 

Rocker switches typically have three different terminals.  

There’s the power terminal located to the right of an ‘On’ switch. This terminal stabilizes electric current by tapping power from the main grid.  

Next is the accessories terminal set at the center of an ‘On’ switch. It’s from this point that all connected appliances receive electrical power.  

Last is the ground terminal, which safely conveys excess current to the ground. The terminal works similarly to ground-fault circuit interrupter (GFCI) power cables.  

A GFCI extension cord cuts power to connected appliances when the current is too high for the wire to handle.  

GFCI is a safety feature that works with multiple power strips and cables. You can find it in different wires, including the flat plug extension cord and its round counterpart.  

Once familiar with the different terminals, complete the wiring process as follows: 

1. Connect the black wire from your power source to the ground terminal on the rocker switch. 

For safety precautions, avoid direct connections and use a fuse holder instead.  

2. A separate wire connects your rocker switch’s “power” terminal to the LED light. 

3. Use another wire to connect the rocker switch’s ground or negative pin and the power source’s negative terminal to the LED light panel. 

4. Secure all the wires by properly soldering them following the manufacturer’s user manual. 

5. Test the switch before the soldering layer dries off. 

This allows you to fix any faulty connections without ripping the terminals apart.  

Final Word

Wiring a rocker switch properly starts by understanding the type of rocker switch in question and whether it’s AC or DC-powered. You can then connect wires from the switch’s terminals with corresponding pins on the power source.