For a range of cable cleats to be classified under the IEC Standard at a particular fault level, it must undergo one or two short circuit tests depending on classification and afterwards : 1. There shall be no failure that will affect the intended function of holding the cable in place. 2. The cable cleats and intermediate restraints, if used, shall be intact with no missing parts (minor deformation is acceptable). 3. There shall be no cuts or damage visible to the outer sheath of the cable caused by the cleats or intermediate restraints. 4. There shall be no failure that will affect the intended function of holding the cable in place. 5. The cable cleats and intermediate restraints, if used, shall be intact with no missing parts (minor deformation is acceptable). 6. There shall be no cuts or damage visible to the outer sheath of the cable caused by the cleats or intermediate restraints. IEC 61914:2009 also provides formulae to enable the theoretical forces between conductors in the event of a short circuit to be calculated. Where: • F = maximum force on the cable conductor in trefoil formation for a three phase short-circuit (N/m) • Ip² = the peak short-circuit current (kA) • S = the cable diameter (m) Vital Short Circuit Protection with Ellis Patents Cable Cleats Ellis Patents cable cleats provide safety critical support to vital cable circuits. Cable cleats must withstand peak short circuit forces generated by the actual cable installation - Ellis Patents 3rd party certified cable cleats provide peace of mind containment of low and high voltage cables. Ellis Patents are a leading voice in the campaign to have cable cleats reclassified as short-circuit protection devices. A move that would mean cable cleats would be placed on a parallel with fuses and circuit breakers. "This reclassification makes absolute sense. In the event of a cable fault, the forces between cables reach their peak in the first quarter cycle, which is the point that cable cleats earn their crust. In contrast, circuit breakers typically interrupt the fault after 3 or even 5 cycles by which time, if the cable cleats are underspecified, the cables will no longer be secure, but will be putting vital electrical installations and lives at unnecessary risk," says Paul Nolan UK Sales Manager, EP. - See more at: http://www.cablejoints.co.uk/blog/article/iec61914-cable-cleats-ellis-patents#sthash.w9CDvUJF.q4Uzbj1L.dpuf