T
tomasi
If you have a large installation of long runs of mains cables in steel trunk and data cables on
steel tray and fire/CCTV on steel tray all on common uni struts and about 25mm apart,
do you have to earth or bond them at both ends of the runs or even at certain intervals along
the length of the runs to minimize magnetic radiation etc.
Also the building has D.B,S/circuits supplied from different sub stations/transformers but the containment is common to both?
steel tray and fire/CCTV on steel tray all on common uni struts and about 25mm apart,
do you have to earth or bond them at both ends of the runs or even at certain intervals along
the length of the runs to minimize magnetic radiation etc.
Also the building has D.B,S/circuits supplied from different sub stations/transformers but the containment is common to both?
