Liebert EXM BDC, User Manual

Page: 42 / 48

Vertiv |
Liebert
®
EXM
™
BDC User Manual | Rev. 3 | 01/18 | 38
3.2 Torque Requirements
All electrical connections must be tight.
Tables 15 and 16 provide the torque values for the connections to the Liebert EXM BDC. Use these values unless
the equipment is labeled otherwise.
Table 14 Recommended lug sizes (compression type) M12, 1/2" bolt
Cable Size
T&B Copper
Two Hole
T&B Aluminum
Two Hole
#6AWG 256-030695-868 —
#4AWG 256-030695-733 —
#2-3AWG 54811BE —
#1AWG 54857BE —
#1/0AWG 256-30695-593 —
#2/0AWG 54862BE 60238
#3/0AWG 54864BE 60244
#4/0AWG 54866BE 60250
250kcmil 54868BE 60256
300kcmil 54870BE 60262
350kcmil 54872BE 60267
400kcmil 54874BE 60269
500kcmil 54876BE 60273
600kcmil 54878BE 60275
700kcmil 54879BE 60277
750kcmil 54880BE 60278
Table 15 Busbar torque for power wiring
Bolt Shaft Size
Torque
Lb-in (Nm)
3/8" (M10) 192 (22)
1/2" (M12) 428 (48)
Table 16 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.