Eaton Powerware 225 kVA Three-Phase Power Distribution..., Installation And Operation Manual, Page: 31 / 142

INSTALLING THE PDU
EATON Powerware
®
225 kVA PDU Installation and Operation Manual
S
164201629 Rev D www.powerware.com
3−5
CTs Circuit Breakers
Figure 3-2. BCM CT Wiring
11. If wiring a PDU with subfeed breakers, proceed to Step 12; otherwise, proceed
to Step 13.
NOTE
When wiring subfeed breakers, begin adding conduits at the back of the center conduit landing plate
to simplify future circuit additions.
NOTE
When wiring a PDU with branch circuit monitoring, use THHN wire for branch circuit output
distribution. Using THHN wire will facilitate routing the wire through the branch CTs to the branch breakers.
12. Route output cables from subfeed breakers to the critical load and connect phase
A, B, and C, and Neutral power wiring to the subfeed breakers and neutral
terminals. See Figure A-30, Figure A-31, or Figure A-32 starting on page A−46 for
wiring access and terminal locations. See Table N on page A−38 for termination
requirements.
If the optional EMS Level 3 BCM is installed, verify the location of the subfeed
CTs. If the CTs are mounted on the input side of the breaker, proceed to Step 13;
if the CTs are mounted on the output side of the breaker, route branch wiring
through the CTs opposite the breaker terminal to the breaker lug.
13. If wiring a PDU with sidecars, proceed to Step 14; otherwise, proceed to
Step 16.
14. Install customer−supplied branch circuit breakers (Cutler-Hammer bolt-on type
BAB or QBHW breakers for bolt−on panels, or plug-on type HQP or QPHW
breakers for plug−on panels) into the sidecar distribution panel (see Figure A-33
on page A−47, or Figure A-34 on page A−48).
NOTE
When wiring branch circuits, begin adding conduits at the back of the center conduit landing plate to
simplify future circuit additions.
15. Route output cables to the branch circuit breakers and wire the branch circuits
according to the branch circuit breaker manufacturer’s ratings and instructions,
and national and local electrical codes (input is prewired to the panelboard).
If the optional EMS Level 3 BCM is installed, route branch wiring through the CT
opposite the breaker terminal to the breaker lug (see Figure 3-2). Use care when
bending and routing the wires through the CTs.