IEC 61914:2009 specifies requirements and tests for cable cleats and intermediate restraints used for securing cable in electrical installations. Cable cleats provide resistance to electromechanical forces where declared. This standard includes cable cleats that rely on a mounting surface specified by the manufacturer for axial and/or lateral retention of cables. Electrical design engineers and specifiers specify power cables from which the maximum anticipated short circuit load can be calculated. This data enables the calculation of the force between the cable conductors in a short-circuit situation - cable cleats installed to cable containment (whether cable tray, ladder or basket) are in turn specified at the correct spacing to contain potential short-circuit forces generated by the low/high voltage power cable system. IEC 61914:2009 provides a method for cable cleats to be short circuit tested so that results for different types of cleats can be compared. The cable cleat manufacturer should determine the fault level at which they wish to test their cable cleats. However, the cable must be unarmoured single core 600V/1000V stranded copper conductor cable and the testing assembly must be in accordance with the requirements of the standard. - See more at: http://www.cablejoints.co.uk/blog/article/iec61914-cable-cleats-ellis-patents#sthash.w9CDvUJF.dpuf