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Installation Guide APC BC300 Series 40kW 208/450/480V UPS 9
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.