“A cable cleat is a device designed to secure electrical cables when installed at intervals along the length of the cables” – IEC 61914 Cable Cleats for Electrical Installations “Cable cleats should: The fifth edition of API Recommended Practice 14F (Design, Installation and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities). “Single […]
Cable cleats may seem like a small component in electrical installations, but their significance cannot be overstated. Here are some key reasons why cable cleats are essential for both safety and efficiency in electrical systems: 1. Safety Assurance One of the primary roles of cable cleats is to secure cables in place, preventing them from […]
Cable cleats are typically secured around the cable using a threaded bolt and nut. The higher the torque applied when fastening, the tighter the cable cleat’s grip on the cable. While a tight grip can help prevent axial slippage, care must be taken to avoid over-tightening, as this can damage the cable’s outer jacket and […]
Cable Cleats and Their Operating Temperatures Our standard range of cable cleats is designed to function in ambient temperatures from -50°C to +60°C and with cable conductor temperatures up to 90°C. Cable Cleats and Eddy Currents Ferro-magnetic materials that fully enclose single conductors in AC circuits can heat up due to eddy currents. Generally, eddy […]
Considerations for Specifying Cable Cleats One of the most important factors when specifying cable cleats is the risk of material corrosion. This risk comes not only from the installation environment but also from other metals that the cable cleat may come into contact with. Galvanic Corrosion Galvanic corrosion occurs when dissimilar metals are in contact […]
Calculating Forces Between Conductors During a Three-Phase Fault When the system peak fault current and cable diameter are known, you can use the formula from the International standard (IEC 61914) to calculate the forces between two conductors during a three-phase fault: Ft=0.17×Sip2 Where: Once Ft in N/m is determined, you can calculate the force for […]
Proving Cable Cleat Strength: The Importance of Short-Circuit Testing Conducting a short-circuit test is the only reliable method to verify that a cable cleat can withstand specific fault conditions. We always recommend that claims of cable cleat strength be supported by a short-circuit test conducted in an independent and accredited laboratory, complete with appropriate certification. […]
Calculating Forces Between Conductors During a Fault The international standard IEC 61914 includes a formula in Annex B that allows designers to calculate the force between two conductors during a fault. If the strength of a particular cable cleat is known, the optimal spacing of the cable cleat along the cable to restrain the force […]
IEC 61914: Assessing Cable Cleat Performance IEC 61914, which covers cable cleats for electrical installations, outlines a series of tests to assess a cable cleat’s performance. Although the standard does not define pass or fail levels, it allows manufacturers to specify the performance characteristics of their products, enabling specifiers to compare products from different manufacturers. […]
Steps for Selecting Cable Cleats Conclusion Learn more about our cable cleats on our cable cleats page.