Bell Wire
- Rated for Environments up to 80°C
- Figure-of-Eight Cable
- Accredited to FCA CPR Rating
Bell wire is used for door bell wire or in buzzer systems. Rated for use in environments up to 80°C, this figure-of-eight style cable can also be used for low-voltage battery and transformer circuits.
Application
Designed for door bell wiring or within buzzer systems.
Construction
- Conductor – copper clad aluminium
- Sheath material – PVC
- Colour – white
- Accredited to FCA CPR Rating
Core Materials Guide
In the majority of cases, the electrical cabling around your home or business will contain pure copper, or at least mostly copper wire.The properties of these cables can vary due to the sheathing or insulation used, but cables can also perform differently when their cores are made from alternative metals.Here are some of the most common core materials available.Pure Metal CoresCopperCopper is one of the highest standard materials used for electrical conductors. Although not quite as conductive as silver, copper is a far more economical and widely supplied material, making it the standard for most cabling applications.Sometimes, copper can be hard to solder unless a ‘flux’ is used – this is a compound used in the soldering process that cleans the surface in preparation for bonding. Using a flux can result in corrosive residues being left behind, so in some cases, copper will be tinned or plated to avoid this – see more about copper-clad cables below.Pure copper, however, is the gold standard of conduction and is suited for pressure terminations too. Copper is also incredibly malleable and can be bent into any shape or direction - although the sheathing material used can have limitations on this ability.AluminiumAluminium is favoured for cable conductors due to its lightweight nature. It is slightly less conductive than copper, but when balancing this with its weight, performs on a similar level.Aluminium is also relatively inexpensive, but cannot be soldered easily, so is often plated with copper to gain the benefits of both materials in a single wire.SilverSilver is an incredibly good conductor, better than copper in fact. It is, however, substantially more expensive. Silver-plated wire is more common, as it utilises the conductive benefits of silver and allows the wire to operate over a wide temperature range (from -65°C to 200°C).There are a few niche uses where silver’s extremely low resistance is a key element – scientific instruments and cryogenics may utilise pure silver conductors for this reason.GoldGold is a common form of plating for brass connector pins – though it’s not that commonly used for cables due to the expense of the materials.Easily soldered, gold has good corrosion resistance. It’s not as good a conductor as copper and silver, but resists oxidation far better, which is why it is used as a plated layer to protect some inner components.Tinned CableTin is generally not used on its own as a cable conductor, but is used as corrosion protection for copper without affecting its conductivity. Coating a copper cable in tin can also make it far easier to solder.Nickel-PlatedNickel-plated wire also operates in extreme conditions over a wide temperature range. If the nickel-plating is thick, it can withstand temperatures up to 750°C. Nickel also acts as an excellent layer of corrosion resistance.Metal Clad CoresCopper Clad AluminiumCopper clad aluminium cable is aluminium cable plated in copper. This makes the cable less expensive than pure copper, but lighter too, as aluminium in itself is an incredibly lightweight material.However, CCA cable allows the aluminium element to gain more electrical conductivity when combining this with copper, as well as adding to the strength of pure aluminium.Copper Clad SteelCopper clad steel is comprised of a steel wire plated with copper. As copper is more expensive than steel, it allows the cable to combine the benefits of both materials for a lower price.CCS cable is not quite as conductive as pure copper, but this level of conductivity is not needed in every application. Copper clad steel wire has double the mechanical strength of solid copper wire, giving it longevity in harsher environments and under frequent movement.For more information about our range of cables, get in touch with our friendly team.
Braiding vs Screening vs Shielding
Cables use screening and shielding to protect the cable and add resistance to interference from other cables or devices.Many people often get confused between braiding, shielding, screening and other terms, so we’ve made a handy guide to what all of these types of protection mean! Shielding or Screening?Shielding and screening are the same! They are both a protective layer added over the conductors to protect the cable from, or prevent it from causing, electrical interference. Disturbance can cause lower quality signal or data loss and can therefore result in equipment failure, therefore it is essential to choose the right screening for the right purpose.Shielding and screening come in many different forms, each with a specific purpose.Types of ShieldingBraidingBraiding is when cables are woven in a lattice of thin tin or copper wire, looking like a braid as the name suggests.The coverage of the braid (often referred to as the density) depends on the number of strands or wires within each plait. It also depends on the thickness of the braid strands. The diameter of the braid wires also specifies the level of damage the cable can withstand.Braiding is used for mechanical protection against any electrical or electromagnetic interference, as well as to add strength to the cable. Braiding is usually applied either over the inner sheath if there is one, or directly over the core bundle.Braiding can be applied in different materials for very specific purposes:Copper - used for screening against electromagnetic interference Steel - used for mechanical protection Glass or Ceramic fibres - used for high temperature environments Rayon - used for torsional strength Although braided shielding can be more costly and time consuming to produce, it is flexible and versatile, and performs well at all frequency types.FoilingFoil screening involves wrapping the cable cores in aluminium or polyester laminated tape to increase durability. The foils must be in contact with a bare wire to act as an earthing point.Foil shielding can offer up to 100% coverage and can withstand high-frequency applications. It's also quick, cost-effective and easy to produce due to its lightweight nature.However it is slightly less durable than traditional braiding, so it is not recommended to use foil shielding in areas where a lot of flex is needed.ArmouringArmouring is not a form of screening, but it is a common method of protection for cables. It is often constructed by winding galvanised steel wires over the cable in the form of a spiral.Armouring is often used when cables are to be laid in an outside environment - it prevents vermin and termites from attacking and damaging the cable.Though armoured cable can be less flexible and harder to terminate, there is no better way to protect a cable from this sort of interference.For more information about cable screening, get in touch with our friendly team, or shop our wide range of cables today.
Sheathing Material Guide
With a wide range of cable sheathing options available, it’s hard to know which is best for your installation.A range of factors from population density, temperature and flexibility can all impact your choice of cable.Take a look at our guide and find out all the benefits and drawbacks of the most common sheath materials on the market! PVCPVC, or polyvinyl chloride, is one of the most common sheathing options for cables. It’s low-cost to manufacture, as well as offering durability, flexibility and resistance to oil and water.PVC is suitable only for indoor use as it is vulnerable to UV light and can become brittle when exposed to bright sunlight. It gives off harmful halogen gases when burned, so is not suitable for densely populated buildings or in any situation where it may be exposed to fire.PEPE (polyethylene) is an excellent choice for outdoor cable installations, such as those involving direct burial. When UV stabilised, the material provides great resistance to moisture and extreme weather.PE is tough and rigid in comparison to other sheathing counterparts, and it does not burn but melts and reforms when cool, making it a safer option too. PE sheathing is commonly used for data transmission cables.RubberRubber is one of the most popular material choices for sheathing. It is waterproof, flexible and chemically resistant.Since rubber is more of a high-cost material, sometimes synthetic rubber compounds are used to mimic the effect without such a high price.Rubber sheathing is used when an installation requires water resistance and flexibility in extreme temperatures.LSFLSF stands for ‘Low Smoke and Fume’. This material is a modified PVC material that produces less gas and smoke than traditional PVC when the polymer is burnt.LSF sheathed cables do not meet the highest standard of fire safety (see LSZH cables) as they can still emit up to 22% Hydrogen Chloride gas, however they do meet further standards than standard PVC sheathing would (up to 28%).LSZHLSZH (Low Smoke Zero Halogen) cables are also known as ‘LS0H’ and ‘0HLS’ (Zero Halogen Low Smoke) are similar to PVC but behave differently in the event of exposure to fire.The main feature of these cables is that they do not release large amounts of toxic fumes or smoke when burned. Their fire retardance is much higher, making them often used in commercial or densely populated buildings due to their better quality and safety elements – anything they release is not harmful to humans when burned. This also means they conform to higher fire regulations than many other cables.SiliconeSilicone is a sheathing material that can operate from –50 to 180 degrees Celsius. It is resistant to heat, chemicals and even bacteria growth, making is a great choice for installations in food or medical environments.Silicone boasts UV resistance and does not produce any harmful smoke or gases when burned.This sheathing material is more expensive than most to produce and has limited options for recycling at its end of life, which doesn’t make it the best choice for everyday cabling. However, for specialist applications, its benefits cannot be beaten.PURPUR stands for polyurethane, a material that offers great chemical and mechanical resistance.PUR can be used in temperatures between –40 and 125 degrees Celsius. Some blends can be halogen free and flame retardant, but this depends entirely on the specific make up.Much like silicone, the material is resistant to bacteria growth and can therefore be used in food or medical-grade installations.PTFEPTFE, or Teflon, is a material used in applications that involve extreme temperatures or corrosive environments.Its benefits are that the material is non-toxic and environmentally friendly, as well as being flexible and non-flammable, making it a safe option for many installations.PTFE boasts thermal, chemical and electrical resistance. It can operate between –75 degrees Celsius and up to 200 degrees Celsius. It is also unaffected by most fuels, oils and fluids.FEPFEP is a fluoropolymer incredibly similar to PTFE, with similar benefits such as the ability to operate in extreme temperatures and low chemical reactivity.NeopreneNeoprene is a form of synthetic rubber. The sheathing material provides oil and chemical resistance, as well as strength and flexibility at lower temperatures.NylonNylon is an incredibly abrasive and chemically resistant material for sheathing, though less flexible that its counterparts.For more help or information regarding sheathing, get in touch with our team!
The Backbone of Modern Military Technology
What is the Function of Defence Standard Cables?In modern warfare, where precision, speed, and reliability are crucial, the importance of Defence Standard Cables cannot be denied.These crucial components serve as the lifelines that connect and power various military technologies, enabling seamless communication, data transmission, and control.Defence standard cables have gone above their conventional role to act as enablers of the advanced functionalities of today’s Military. Defence Cables: Unseen Heroes of Communication SystemsCommunication is the foundation of military operations, and Defence Standard Cables ensure the effectiveness.Where instant and secure communication makes all the difference, Defence Standard Cables provide the basis for:Encrypted transmissions - Decoding information that only authorised parties with the appropriate decryption key can understand and decipher the original message. Real-time data sharing - Exchange of information between individuals, devices, or systems. Battlefield coordination - Organised management of military operations, where various units, teams, and assets work together to achieve strategic objectives. Defence Cables facilitate the flow of information, helping commanders make informed decisions. Wiring the Skies: Defence Cables in Radar SystemsRadar systems are the eyes of the military, detecting and tracking threats across a vast range of distances.Behind the scenes, Defence Standard Cables enable the intricate interplay of electromagnetic waves and signals that power the Radar Systems.Defence cables ensure low signal loss, minimal interference, and high data integrity. This allows radar operators to identify and respond to potential threats swiftly and accurately. UAVs: The Strength of Defence Standard CablesUnmanned Aerial Vehicles (UAVs), or drones, have changed modern warfare with their adaptability and strategic capabilities.Defence Cables play a crucial role in UAVs, connecting control stations with airborne platforms, sensor data, and real-time video streaming.The reliability and robustness of these cables are paramount, ensuring that UAVs can operate seamlessly even in challenging environments. Naval Warfare and Subsea Defence CablesIn Naval Warfare, where the Maritime Domain presents unique challenges, Defence Standard Cables demonstrate their resilience.These cables serve as the core of naval vessels, connecting complex systems ranging from communication networks to propulsion and weapon systems.Furthermore, they extend to underwater applications, linking submerged sensors and communication arrays that provide critical awareness in subsea environments. Hostile Environments Demand Defence CablesThe battlefield is not a forgiving place, with extreme temperatures, vibrations, EMI, and exposure to hazardous materials.Defence standard cables thrive in hostile environments, showcasing their ruggedness and durability.These cables resist physical stress, harsh weather conditions, and cyber threats. This ensures that military technologies remain effective under the most demanding circumstances. Innovation and Future ProspectsAs military technologies continue to evolve, so too will the demands placed on defence standard cables.The rise of artificial intelligence, quantum technologies, and advanced sensor networks will require cables with enhanced data-carrying capacities and resilience.Researchers and manufacturers work diligently to develop cables that meet these demands, contributing to the efficiency of military operations. ConclusionDefence standard cables underpin the functionality of modern military technology.From communication systems that enable real-time coordination to radar systems that identify potential threats. These cables play a pivotal role in safeguarding countries and ensuring the success of military operations.As technology advances, Defence Cables will continue to adapt, remaining at the forefront of innovation and resilience.Securi-Flex® offer a range of Defence Standard Cables which are available directly from stock.If you have more questions, feel free to contact our friendly team. We’re always happy to help!
Troubleshooting Your Satellite Coax Connections
Ensuring a Seamless TV ExperienceSatellite television has become an integral part of our entertainment landscape.It offers a multitude of channels, high-definition picture quality, and a range of services that cater to diverse tastes.However, the quality of your satellite TV signal, is only as good as the connections that bring it to your screen.Coaxial TV cables are the backbone of your satellite TV system, responsible for delivering popular shows and movies.When these cables and TV accessories encounter issues, it can result in a degraded signal or complete loss of picture.This article will guide you through the process of troubleshooting your satellite coax connections, helping you enjoy uninterrupted TV viewing. Understanding Coaxial Cables and Their RoleBefore we dive into troubleshooting, it's essential to understand what coaxial cables are and their significance in satellite TV systems.A coaxial cable, often referred to as "TV coaxial cable," is a type of electrical cable designed to transmit high-frequency signals.In satellite TV systems, these cables connect your satellite dish to your receiver.They are responsible for carrying the satellite signal from the dish to your television, ensuring that you receive a clear and uninterrupted picture. Common Issues with Coaxial Cables for TVCoaxial cables can be susceptible to a range of problems, which can result in signal degradation or a loss of picture.Some common issues include:Loose Connections - Over time, the connections between your coaxial cables and your satellite receiver, splitters, TV aerial or the dish itself may become loose, leading to a drop in signal quality. Damaged Cables - Physical wear and tear, such as bending, kinking, or crushing the aerial cables, can lead to internal damage, causing signal loss. Weather Interference - Adverse weather conditions, like heavy rain, wind, or snow, can impact the performance of your satellite TV system. Moisture in the cables can lead to signal problems. Corrosion and Water Ingress - Exposure to moisture, especially in outdoor installations, can result in corrosion and water ingress, affecting cable integrity. Troubleshooting Your Coaxial ConnectionsTo address these issues and restore your satellite TV signal, we suggest following these troubleshooting steps:Check Connections - Begin by ensuring all cable connections are secure. Gently but firmly tighten any loose connections at your receiver, dish, and splitters. Inspect Along the Line - Examine the coaxial cable along its entire length for any visible damage, such as cuts, kinks, or crushed sections. Replace any damaged segments. Check for Water Ingress - If your satellite dish is outdoors, look for signs of moisture and corrosion on connectors and cables. Ensure that all outdoor connections are adequately weatherproofed. Eliminate Interference - If weather interference is a recurring problem, consider disconnecting your satellite system during severe weather conditions. This precaution can prevent moisture-related issues. Preventative MaintenancePreventing problems with your coaxial cable connections is often better than dealing with issues after they arise.Here are some steps we suggest you take to ensure trouble-free satellite TV viewing:Weatherproofing - Keep all outdoor connections weatherproofed with the appropriate sealants or waterproofing tape. Regularly inspect these connections for any signs of damage or wear. Disconnect During Storms - When severe weather is on the horizon, it's advisable to disconnect your satellite receiver from the power source and the satellite dish. This reduces the risk of electrical surges or damage during storms. Regular Maintenance - Periodically inspect your coaxial cables for any signs of wear, especially if they are exposed to the elements. Replace any cables that show signs of damage or wear and tear. Contact Your Satellite Provider - If your troubleshooting efforts do not resolve the issue, it's time to contact your satellite provider. They can send a technician to diagnose and fix more complex problems. In Summary:The coaxial cables in your satellite TV system play a crucial role in delivering your favourite programs to your screen.By understanding potential issues and following a step-by-step troubleshooting process, you can ensure a seamless TV experience.Additionally, proactive maintenance measures such as weatherproofing and disconnecting during storms can help prevent issues from occurring in the first place.If all else fails, don't hesitate to contact your satellite provider for professional assistance, ensuring you get back to enjoying your satellite TV without interruption. Securi-Flex® offer a range of TV Coaxial Cables which are available directly from stock.If you have any questions, feel free to contact our friendly team. We’re always happy to help!
Award Winning Customer Service with Securi-Flex®!
We did it! Securi-Flex® Ltd is proud and elated to announce our recent triumph at the EW Awards 2023 We are absolutely thrilled to bring home the "Best Customer Service: Brand" award, and we couldn't have done it without our amazing customers, dedicated team, and the esteemed panel of expert judges who recognised our commitment to excellence!A Heartfelt Thank You to Our Valued CustomersA Shout out to Our Outstanding Team Gratitude to the EW Awards 2023.This award belongs to each and every member of the Securi-Flex® family. Well done, team! At Securi-Flex®, we believe that exceptional customer service is not just a goal; it's a way of doing business. It's about understanding our customers' needs, providing timely solutions, and continuously striving for improvement. This award validates our commitment to delivering the best customer experience possible.Thank you, once again, for your trust and support! To experience our Award Winning Customer Service yourself, contact our friendly team at Securi-Flex®, we're always happy to help!
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Download DatasheetApplication For connecting door bells and chimes Drum Length 100 Metres Overall Colour White Overall Sheath PVC Weight 0.7 Flame Propagation Standard Fca Unit Weight 0.700000 EPIM SKU SFXBWPVCWHT100 Lukins Code 425284058 Product Cable Type Bell Number of Cores 2.000000 Core Identification Coloured Conductor Material Copper Clad Aluminium Insulation Type PVC Note For connecting door bells and chimes Core Colours White RAL 9003 (1 Core marked with Black stripe) Outer Sheath Colour White RAL 9003 Voltage Rating 30 V Number of cores 2.000000 Colour outer sheath White CPR Fca Conductor Copper Clad Aluminium Conductor Diameter (mm) 0.50 ±0.01 Insulation Colour White RAL 9003 (1 Core marked with Black stripe) Insulation PVC Max Conductor DC resistance @ 20°C <193O/km Rated Voltage (V) 30V -
