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Bonding both sides of an swa cable

MrJack96
Is it necessary to bond both sides of an armoured cable if it’s not being used as a CPC and if you bond it at the supply side of an electrical motor starter panel is there anything in the regs where it should be bonded too or can it just be bolted to the chassis stud using a 6mm fly lead off the gland. 


thanks for your help in advance guys.
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  • 0
    So if the gland plate is bonded to the chassis of the MCC would you again run a separate flylead to the earth bar.

    The regs aren't as specific as that - the requirement is to have a suitable and reliable connection - but there are many ways to achieve that and choosing which is up to you (or occasionally customer specifications).


    If you have a thin gland plate that's covered in paint and held onto the rest of the enclosure by a few feeble screws and don't bother removing the paint from either under the glands or from around the fixing screw, then you'd probably want a fly lead from each gland, sized appropriately for the circuit, to a good earthing point or something similar. If on the other hand you had good solid gland plate, fixed by substantial bolts and with all contact areas clean bare metal but protected from corrosion and with a c.s.a. that was more than adequate for use as as c.p.c. in those materials then you might not need anything extra at all.


       - Andy.
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  • 0
    So if the gland plate is bonded to the chassis of the MCC would you again run a separate flylead to the earth bar.

    The regs aren't as specific as that - the requirement is to have a suitable and reliable connection - but there are many ways to achieve that and choosing which is up to you (or occasionally customer specifications).


    If you have a thin gland plate that's covered in paint and held onto the rest of the enclosure by a few feeble screws and don't bother removing the paint from either under the glands or from around the fixing screw, then you'd probably want a fly lead from each gland, sized appropriately for the circuit, to a good earthing point or something similar. If on the other hand you had good solid gland plate, fixed by substantial bolts and with all contact areas clean bare metal but protected from corrosion and with a c.s.a. that was more than adequate for use as as c.p.c. in those materials then you might not need anything extra at all.


       - Andy.
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