Nortel Meridian 1 Planning, Installation And Operating Instructions page 47

Page 28 of 536 Chapter 3 — System and site requirements
Figure 3
Isolated Ground Bus
Dedicated Transformer
A
208V
120V 120V
Xo
C
G
Note 6
Note 2
Note 1
Notes:
1. Ground conductor should be the same size
as the largest conductor run between the
transformer and the AC panel.
2. Transformer (dedicated for Meridian and
Telco Interface Equip) can be either a
single phase 120/240 or a three phase
208Y/120 and must have a system ground
conductor and should be120/240 or 480 to
208Y/120.
3. Receptacles: All 120V service drops in the
Equipment room must have IG type
receptacles. Each circuit must have
individual hot, neutral and ground
conductors.
553-3121-210 Standard 3.0
Meridian1 Service Panel
B
N
Cadwelded
or (2) ALCU
Clamps
January 1999
Note 5
A B C
15A
15A
15A
Isolated
Neutral Bus
Isolated
Ground Bus
Note 6
Note 1 & 7
Must have conduit
4. NEMA numbers for ground receptacles are:
208/240 @ 15 A IG-6-15
120 @ 15 A IG-5-15
5. Dedicated service panel must be located in
the equipment room.
6. Required by Canadian Electrical Code: other
electrical codes may not.
7. Bonding conductor is enclosed in same
raceway/conduit cable containing conductors
as per CEC 10-906(9).
8. A "Dirty Ground Bus" is not a mandatory
requirement in the Meridian AC Service
Panel. If this type of bus is installed,
connections must be limited to non-Meridian1
auxiliary equipment.
208V
Isolated
Note 4
Ground
Receptacle
Note 3 & 4
Cabinet
Ground Lug
120V