APC BC300 - Manual (Page 9)

Installation
990-1400A
Installation Guide APC BC300 Series 60kW 208/480V UPS 9
2) Place the conduit box between the center leg and right leg of the unit, with the open side
facing the front of the unit
3) Use four T20 torx screws and washers to fasten the conduit box to the front legs of the UPS
4) After all UPS wiring has been completed, attach conduit box cover to the front of the conduit
box
5) Use hook and loop fasteners to attach the base covers to the UPS
3.3 Installing the Maintenance Bypass Panel and UPS
Follow these guidelines when installing the Maintenance Bypass Panel and UPS:
• Install the Maintenance Bypass Panel within sight of the UPS. When installing the
Maintenance Bypass Panel, see illustrations under
Wiring Diagram for BC300 and
any instructions provided with the Maintenance Bypass Panel.
• Install all wiring in accordance with applicable electrical codes. Use 75° C copper
conductors.
• Install the AC input and UPS output in separate conduits. UPS output circuits
must be installed in dedicated conduit systems and separate from other
electrical circuits.
• Control wiring must be installed in a separate conduit.
• Good ground connections are necessary to reduce electrical noise and make the
operation of the UPS and the loads safe. Follow the grounding guidelines in the
installation wiring diagram. Refer to the National Electrical Code (NEC),
appropriate IEEE documents, and all applicable codes.
• For systems with non-linear, neutral-connected loads, standard practice is to size the
neutral conductor for 1.732 times the phase current.
• When installing the AC wiring, refer to the illustration Single Line Diagram for
BC300 and to any additional diagrams provided with the UPS. The illustration
shows typical installations . Your installation may be different.
• See Component Overview illustration for a view of the UPS with covers removed. See
Wiring Termination or Component Overview illustrations for UPS wiring
terminations. Refer to illustration External Connection Board for information on the
external connection board. See illustration Communication Interface Board (Option)
for information on the optional communication interface board.
If you have any questions, contact APC Technical Support for assistance.
NOTICE!
Place flat washer, lock washer and screw in this particular order.
IMPORTANT!
If you do not have an APC Maintenance Bypass Panel, you must provide overcurrent protection
and a UPS input AC disconnect means.
APC
strongly recommends that a means of bypassing the UPS from the critical load be
provided for maintenance.