When it comes to electrical installations, one of the most important components that you need to consider is the back box. Back boxes help to protect the electrical wiring and connections, and ensures that the electrical installation is safe and secure. One of the most popular types of back boxes that has been used for decades is the metal back box. In this article, we will delve deeper into what metal back boxes are, their advantages, and why they are a preferred choice for electrical installations.
metal back boxes are boxes that are made of metal and are used to house electrical wiring, sockets, and switches. They serve as a protective casing around the electrical components, preventing them from damage and shielding them from accidental contact. Metal back boxes come in various shapes and sizes and have a variety of mounting options, making them suitable for any type of electrical installation.
One of the primary advantages of using metal back boxes is their durability. Metal back boxes are typically made from steel or aluminium, which makes them sturdy and long-lasting. They can withstand any environmental conditions and protect the electrical components from damage caused by impact, heat, or moisture. This is especially important in high-traffic areas where the likelihood of accidental damage is higher.
Another advantage of using metal back boxes is that they offer great protection against fire. Metal back boxes are non-combustible, which means that they will not catch fire in case of a fault in the electrical installation or due to overheating of the components. This can be a life-saving feature in the event of a fire outbreak as it helps to reduce the spread of the fire.
In addition to the above, metal back boxes also provide better electromagnetic shielding. The metal casing of these boxes acts as a shield, blocking any electromagnetic interference from the electrical components they enclose. This is especially important in situations where sensitive equipment such as computers, televisions, and audio systems are involved. The electromagnetic shielding provided by metal back boxes minimises interference, ensuring that the equipment performs optimally.
Installation of metal back boxes is relatively easy and straightforward. They can be installed using screws, nails, or wall plugs (depending on the type of surface they are being installed on), making them a preferred choice for anyone looking for a hassle-free installation. They also have pre-cut holes in the back to allow for easy routing of wires and cables.
Metal back boxes are also ideal for outdoor installations. Since they are made from metal, they can withstand harsh weather conditions and protect the electrical components from moisture damage. This makes them the perfect choice for outdoor lighting installations, garden electrics or sockets installed outside the property.
While metal back boxes offer a range of benefits, there are some considerations that need to be taken into account when using them. One of the main drawbacks of metal back boxes is that they conduct electricity. This means that if the electrical component inside the box comes into contact with the metal casing, it can cause electrical shock, which can be fatal. To avoid such risks, it is recommended that only qualified electricians should install metal back boxes to ensure proper earthing connections are undertaken.
Another factor to consider when using metal back boxes is that they can interfere with wireless connections, especially when the metal box encloses the wireless receiver. In such cases, it is recommended to use plastic back boxes or have the wireless receiver outside of the metal box to allow a stronger connection.
In conclusion, metal back boxes are a preferred choice for many electrical installations due to their durability, non-combustibility, electromagnetic shielding and ease of installation. However, it is important to take into account the conductive material and interference considerations when installing them. By following all the guidelines and safety procedures, you can enjoy all the benefits of metal back boxes and ensure a safe and secure electrical installation.