22 Installation Manual
Use 75°C copper wire. Select wire size based on the ampacities in Table 310-16 and associated notes of the National
Electrical Code (NFPA 70).
Use commercially available solderless lugs for the wire size required for your appl ication. Refer to Table 3. Connect
wire to the lug using tool and procedure specified by the l ug manufacturer.
Tabl e 1Power Wiring Terminals - Factory Supplied
UPS
MODULE CONNECTION
TYPE
65 & 80 kVA
100-225 kVA
Bypass input wiring is top-entry, to busbars on top of the circuit breaker. Rectifier
input wiring is top-entry, directly to lugs on top of the input circuit breaker. DC link
and critical bus output connections are top entry, to frame-mounted lugs. A bottom-
entry access plate is standard, to enable the installer to pull AC cables and control
wiring through the module to the connections on top.
For “SpaceSaver” modules in the 48” frame, rectifier and bypass input wiring is top-
entry, directly to lugs on top of their respective circuit breakers. DC link and critical
bus output connection are top entry, to frame-mounted lug s.
Standard modules with top-and-bottom entry have access plates and a wireway on
the right side of the modules. All power connections are to bus bars in the wireway.
Tabl e 2Torque Specifications
NUT AND BOLT COMBINATIONS
BOLT SHAFT
SIZE GRADE 2
STANDARD ELECTRICAL CONNECTIONS
with Belleville Washers
Lb - in N-m Lb-in N-m
1/4 53 6.0 46 5.2
5/16 107 12 60 6.8
3/8 192 22 95 11
1/2 428 22 256 29
CIRCUIT BREAKERS
WITH COMPRESSION LUGS
(For Power Wiring)
TERMINAL BLOCK
COMPRESSION LUGS
(For Control Wiring)
WIRE SIZE
OR
RANGE
Lb-in N-m AWG WIRE
SIZE
OR RANGE
Lb-in N-m
#6 - #4 100 11 #22 -#14 3.5 to 5.3 0.4 to 0.6
#3 - #1 125 14
1/0 - 2/0 150 17
3/0 - 200 MCM 200 23
250 - 400 MCM 250 28
500 - 700 MCM 300 34