View the thread, titled "Bonding basket/tray on a fire alarm installation??" which is posted in Security Alarms, Door Entry and CCTV (Public) on Electricians Forums.

there is a good guidance on this subject in guidance note 8 starting on page 151, which basically says metallic cable and basket trays (when carrying insulated cables etc) are not an exposed conductive part and there for do not require eathing or bonding under normal cirumstances unless it is deamed as an extranous conductive part

hope this helps
 

Reply to the thread, titled "Bonding basket/tray on a fire alarm installation??" which is posted in Security Alarms, Door Entry and CCTV (Public) on Electricians Forums.

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Bonding basket/tray on a fire alarm installation??
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devonsparky,
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R4BOE,
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