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Cable ladder bonding

mrf
429eea9f08a4e6aa0aeb5605908220c1-huge-sketch-7.png

Saw this recently on site, there is a bond across every cable ladder joint. I do not believe that this is necessary as this is not an exposed-conductive-part or an extraneous-conductive-part. Am I right? 


mrf
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  • 0
    If the tray is a CPC,  these little links serve no purpose - like the proper joints, if the bolts are loose, neither connect.

    Also for EMC / EMP handling, there is little point in adding a relatively high resistance braid in shunt with a nano-henry micro-ohm connection of the fishplates.

    Specifying Nordlock washes would be more used if coming loose is a risk.

    IF the jointing plates were painted, perhaps there would be some point.

    The  purpose here is to give someone something to inspect, and perhaps to oblige someone allow time for an extra task to go along

    and be very careful to tighten the bolts.

    If any BS really requires this for any electrical purpose, then in this application it is indeed BS.

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  • 0
    If the tray is a CPC,  these little links serve no purpose - like the proper joints, if the bolts are loose, neither connect.

    Also for EMC / EMP handling, there is little point in adding a relatively high resistance braid in shunt with a nano-henry micro-ohm connection of the fishplates.

    Specifying Nordlock washes would be more used if coming loose is a risk.

    IF the jointing plates were painted, perhaps there would be some point.

    The  purpose here is to give someone something to inspect, and perhaps to oblige someone allow time for an extra task to go along

    and be very careful to tighten the bolts.

    If any BS really requires this for any electrical purpose, then in this application it is indeed BS.

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