Nortel Meridian 1 Option 11C Planning And Installation Manual page 49

System and site requirements Page 49 of 408
Transformers without pluggable power cords
If the transformer does not have a pluggable cord, it must be hardwired to an
electrical panel, and all wires (including grounds) must be routed through a
single conduit.
Some electrical codes permit the use of conduit as the sole ground conductor
between pieces of equipment.
It is recommended that you run a separate insulated ground conductor through
the conduit to bond chassis grounds together. Such a conductor will maintain
the safety ground connection in the event that the conduit becomes corroded
or disconnected.
All ground lines must be run through the same conduit as the phase
conductors serving the equipment. Figure 17 on page 50 shows the Isolation
transformer connections.
Option 11C Planning and Installation Guide