Comprehensive Fused Spurs Guide for Buyers

Fused spurs, also known as fused connection units (FCUs) or fused spur switches, are electrical devices commonly used in wiring installations. They are essentially electrical switches that incorporate an individual fuse, which is an electrical component designed to protect against shocks and electrical fires by breaking the connection in the event of excessive current.

Fused spurs are directly wired connections between an electrical cable and an appliance, meaning they do not use a plug and socket. This makes them a more permanent solution compared to plugs and sockets. Due to their direct wiring, it is advisable that fused spurs are only installed or removed by a qualified electrician.

Fuses fall under the broader category of electrical components called 'circuit breakers', all of which have a similar function of breaking the circuit in case of an overload or short circuit. Fused spurs provide a convenient and safe way to connect electrical appliances or equipment to the mains electricity supply while incorporating built-in fuse protection.

One of the most important factors to consider when choosing a fused spur for your electrical installation is the current rating. The current rating determines the maximum amount of electrical current the fused spur can safely handle without overloading or causing potential hazards. The most commonly used fused spurs are available in the following amperages:

• 10 Amp Fused Spurs: 10-amp fused spurs are suitable for powering smaller appliances and devices that require a lower current draw. They are often used for lighting circuits, low-power heating systems, and other applications where the total current demand is relatively low.
• 13 Amp Fused Spurs: 13-amp fused spurs are the most widely used and versatile option, as they are compatible with the standard 13-amp plug used for many household appliances. These fused spurs can handle the current requirements of a wide range of devices, from kitchen appliances to entertainment systems.
• 20 Amp Fused Spurs: 20-amp fused spurs are designed for higher-power applications that require a larger current capacity. They are commonly used for powering heavy-duty appliances, such as electric ovens, cooktops, and larger heating systems. These fused spurs ensure that the electrical circuit can handle the increased current demand without the risk of overloading or tripping the fuse.
• Less Common Amperages: While less common, 3-amp and 5-amp fused spurs are also available for specific applications. 3-amp fused spurs are suitable for low-power devices like clocks or small transformers, while 5-amp fused spurs can be used for certain types of lighting circuits or small appliances.

Fused spurs are specialised electrical devices that serve as an alternative to conventional plug sockets, specifically designed for high-power and high-voltage appliances. They are commonly utilised in domestic settings for a variety of essential household equipment, including ovens, dishwashers, washing machines, boilers, thermostats, and refrigerators. Fused spurs are particularly advantageous in applications where safety and reliability are important, such as in bathrooms where electric heaters may be installed.

Key Functions of Fused Spurs

The primary function of a fused spur is to provide a secure and dedicated electrical connection for appliances, allowing them to operate on a separate cable that branches off from the main electrical circuit, known as the ring main. This configuration not only enhances safety but also minimises the risk of overloading the circuit. By operating outside of the ring main, fused spurs offer an additional layer of protection, ensuring that high-demand devices can function without compromising the integrity of the overall electrical system.

Fused Spurs vs RCD Sockets

It is essential to distinguish fused spurs from residual current device (RCD) sockets. While both serve protective functions, RCD sockets are designed to automatically disconnect the live current in the event of a fault or short circuit, thereby preventing electrocution. In contrast, fused spurs rely on a fuse to break the circuit when excessive current is detected, protecting the appliance and the wiring from potential damage.

Applications in Various Settings

Fused spurs are widely used in various applications, including:

• Kitchen Appliances: High-powered devices like ovens, microwaves, and dishwashers often require a dedicated supply for optimal performance and safety.
• Laundry Equipment: Washing machines benefit from the reliability of fused spurs, ensuring they operate efficiently without risk of circuit overload.
• Heating Systems: In bathrooms and other areas where heating is necessary, fused spurs provide a safe connection for electric heaters and thermostats.
• Refrigeration Units: Fused spurs are ideal for refrigerators and freezers, ensuring they maintain a constant power supply without interruption.