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16 Installation Guide APC BC300 Series 10kW 208/450/480V UPS
990-1378
Installation
3.3.3 Wiring Diagram for BC300
Figure 8 Wiring Diagram for BC300
Notes:
1. All systems are installed as 3-wire + ground.
2. Cables not provided by APC.
3. All AC power cables must be 3- or 4-wire plus ground 3-phase
4. Power and data cabling must be run in separate conduits.
5. Installation must comply with national and local codes.
NOTICE!
You must provide overcurrent protection and UPS input AC disconnect means.
Refer to “Technical Specifications” section in this Installation Guide for recommended UPS input
and output overcurrent protection.
CAUTION!
UPS systems can be connected as 3-phase, 3-wire plus ground, if no loads are using the neutral
conductor.
CAUTION!
Read warnings on page 2 of this Installation Guide before continuing.
NOTICE!
Only authorized electricians may install the UPS and all applicable codes must be observed.
1 2 3 4 5 6 7 8 11 12 13 14 15 16 17
1 2 3
L1 L2 L3 N G L1 L2 L3 N G E
L1 L2 L3 N G L1 L2 L3 N G
L1 L2 L3 N G L1 L2 L3 N G
1 2 3
X001
X009
X0012
X004
X003
X004X001
X002
UPS AUX
External
Connection
Board
System output
3- or 4-wire + ground
Maintenance Bypass Panel
Utility
input 1
Utility
output
UPS
System input
3- or 4-wire + ground
Grounding
Electrode