Figure 2-1. Ac Grounding Requirements - AT&T MERLIN LEGEND Release 2.0 Installation Section

Installing the Control Unit
From AC
Load Center
(2 separately
fused 15 A
circuits)
HUBBELL Receptacles
(5262 15 A
or equivalent)
Single-Point
Ground

Figure 2-1. AC Grounding Requirements

Each carrier requires one outlet receptacle.
Additional AC outlets may be required for auxiliary equipment.
If a printer or a PC is to be installed with the system, it must be
plugged into the same AC branch as the power supply of the basic
carrier.
If the printer or PC is 50 ft (15 m) or more from the control unit or is
plugged into a different AC circuit, asynchronous data units (ADUs)
must be installed as well. Complete installation instructions are
provided in Chapter 5.
TYPICL AC GROUNDING
(#14 AWG)
Ground Bar
Mounted on a 4" Box
(Square "D" PK9GTA or
approved equivalent)
#12 or #14 AWG Copper
Wire to EAch Power Supply
Grounding Screw
Ground
4" Box (RACO 230
Approved
Building Ground
(#6 AWG Copper)
Power and Grounding
or equivalent)
4" Cover
(RACO 807
or equivalent)
2-7