The first international standard for cable cleats for electrical installations was launched recently. Those with electrical engineering jobs would know that cleats are designed to protect and contain cable installations in short-circuit conditions. In such conditions, power cables -- especially three-phase, single conductor ones -- are subject to significant forces as a result of induced magnetic fields. These forces cause violent thrashing of the individual conductors, frequently resulting in inadequately supported cables jumping out of their trays or raceway systems. Such unrestrained cable movement can cause considerable cable damage, damage to the surrounding equipment, and even injury of operations and maintenance personnel.

The introduction of IEC 61914 (2009), as it is referred to by those with electrical engineering jobs, ensures that cable cleats are tested for quality. ?[The international standard] provides global recognition of the need for secure cleating in electrical installations and, when you consider that as recently as 2003 there wasn?t even a European standard for cleats, it demonstrates just how far we?ve come in the journey towards the widespread adoption of safe cleating practices,??? applauded one renowned cable cleat manufacturer.

However, no international standard can have real impact on improving the welfare of those at risk without its being universally recognised and implemented. The safety of those with electrical engineering jobs cannot be guaranteed if relevant safety measures are not adopted by both specifiers and contractors. The problem is that the international standard is advisory, rather than regulatory. One can be sure that although many cable cleat manufacturers would endeavour to bring their products in line with the international standard, some will continue to ignore it.

The only way to ensure the widespread adoption of safe cleating practice is through education on the importance of cable cleats and their correct use. Those with electrical engineering jobs need to understand that different cable cleats are designed to withstand specific forces. When a short circuit occurs, the only thing an under-specified cable cleat will do is to add to the shrapnel. Only by using appropriate cable cleats correctly can risks to the installer and the end-user be completely eliminated.