User Manual

AS4000 Release3 and Release 4 Central
Terminal Installation and Commissioning
DLP-003
605-0000-432
Issue 1.3a Date 18th October 1999
Page 5 of 6
2. Rack Earthing
Using the site survey, locate the building central [safety] grounding point. Run an
earth cable rated at 30A. to each rack and connect it to the centre earth stud located at
the top or bottom (not both) of the rack. See
Figure 9. These points are labelled with the IEC Earth symbol. .
Earthing Point
Rack Base
Earthing Point
Figure 9. Rack Earthing
Warning: No other external safety earth connection shall be made to the
rack. The two studs located towards the sides at the top of the rack are used for earth
bonding the side and rear panels to the rack and must be left untouched to maintain the
systems safety earthing integrity