Nortel Meridian 1 Option 11C Planning And Installation Manual page 46

Page 46 of 408 System and site requirements
553-3021-210 Standard 7.00
Isolation transformer ground
It is recommended that the transformer ground have the following
characteristics:
• Separate grounds for primary and secondary windings rather than
common ground
• A "clean" and permanent SPG reference at the transformer secondary for
the Option 11C system.
In addition, verify the ground conductors inside the transformer to ensure
they are sized appropriately.
Note: Do not ground the transformer or Option 11C system to structural
steel or water pipes. Connect them to a known building ground reference.
Receptacles
Receptacle requirements are as follows:
• When mounted on the wall, they must be installed within reach of the
cabinet power cords
• All receptacles served by the secondary must be of the isolated ground
type
• The ground prong of each outlet must be connected by an insulated
conductor to the system SPG.
If the transformer has an isolated secondary ground lug, use it as the SPG. If
it doesn't, use the chassis ground of the transformer as the Single Point
Ground.
January 2002