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What are the fastening instructions for insulated flexible bars?

Published date: 29 January 2019

After the connection, the flexible bars must be fastened on insulating supports, which are themselves fastened every 400mm at most on the enclosure frame. It is prohibited to fasten flexible bars on metal supports and elements with sharp edges not to damage the insulator sheath.
The maximum distance between ties must be complied with. This distance depends on the presumed short circuit current of the switchboard. The table below gives the maximum distance to be kept between two consecutive ties depending on the presumed short circuit current and type of device.



 The recommended ties to fasten the flexible bars are at least 9mm wide and able to bear an 80 kg load. Very thin and weak ties may be damaged in case of short-circuit.
 

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