Vertiv EXM Parallel Cabinet, User Manual

Page: 35 / 38

Specifications
Vertiv | Liebert
®
EXM
™
Parallel Cabinet User Manual | 31
3.2 T
ORQUE
R
EQUIREMENTS
All electrical connections must be tight.
Tables 8 and 9 provide the torque values for the connections to the Liebert EXM Parallel Cabinet.
Use these values unless the equipment is labeled otherwise.
Table 7 Recommended lug sizes (compression type) M10, 3/8" bolt
Cable Size
T&B Copper
One Hole
T&B Aluminum
One Hole
T&B Copper
Two-Hole
T&B Aluminum
Two-Hole
#8AWG 54132 60104-TB — —
#6AWG 54136 60109
256-030695-
868
—
#4AWG 54140 60114
256-030695-
733
—
#2AWG 54143 60118 54811BE —
#1AWG 54148 60124 54857BE —
#1/0AWG 54109 60130 256-30695-593 —
#2/0AWG 54110 60136 54862BE 60238
#3/0AWG 54111 60142 54864BE 60244
#4/0AWG 54112 60148 54866BE 60250
250kcmil 54174 60154 54868BE 60256
300kcmil 54179 60160 54870BE 60262
350kcmil 256-30695-112 — 54872BE 60267
400kcmil
256-30695-
1403
— 54874BE 60269
500kcmil 256-30695-339 — 54876BE 60273
Table 8 Busbar torque for power wiring
Bolt Shaft Size
Torque
lb-in (Nm)
3/8" (M10) 192 (22)
1/2" (M12) 428 (48)
Table 9 Terminal block torque with compression lugs for control wiring
AWG Wire Size
or Range
Torque
lb-in (Nm)
#22 - #14
3.5 to 5.3
(0.4 to 0.6)
NOTE
Refer to the manufacturer’s data for proper torque for circuit breaker power connections.