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Discuss Bonding earth to metal furring behind plasterboard. in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Should I bond all metal furring behind plasterboard to earth busbar
 
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telectrix

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no
 

Ian1981

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I doubt it’s an extraneous conductive part in its own right and likely to be not accessible to touch
 

dinger809

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Behind plasterboard? Hardly likely to be accessible, so not an extraneous conductive part that is likely to come into contact with a person. As above, just ensure the circuits have RCD protection
 
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Yes there are cables running behind the plasterboard in plastic conduit . The circuit will be on a rcbo.

Imagine water gets spilled and gets behind the skirting touches the stud work which is live due to a screw that penetrated the cables.
 

telectrix

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Yes there are cables running behind the plasterboard in plastic conduit . The circuit will be on a rcbo.

Imagine water gets spilled and gets behind the skirting touches the stud work which is live due to a screw that penetrated the cables.
that's why you have the RCBO.
 

telectrix

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was a case of a woman electrocuted exactly same scenario. no testing would have picked up the fault. although the report does not say, it's most likely that a RCD was not fitted to the circuit. if the metal stud had been earthed ( which is not a requirement ) it's probable that testing would have picked up a L-E short.
 

Ian1981

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Worth remembering that cables concealed in walls with metallic parts and metallic frames are subject to having additional protection to them by an rcd in accordance with 415.1.1 or be mechanically protected or be installed in accordance with 522.6.204.

Earthing or bonding metallic parts in walls should not be necessary unless the metallic walls meet the definition of an extraneous conductive part
 
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