Vertiv Liebert PPC - Table 8 Panelboard Main Circuit Breaker Torque Specifications; Table 9 Branch Circuit Breaker Torque Specifications; Table 10 Terminal Block Compression Lug Torque Specifications; Table 11 Torque Specifications, General

Vertiv | Liebert
®
PPC
™
User Manual | Rev. 6 | 03/18 | 32
Table 8 Torque specifications, general
Electrical Connections
with 1 Belleville Washer
Electrical Connections
with 2 Belleville Washers
Torque Torque
lb-in N-m lb-in N-m
Bolt Shaft Size, in./mm
1/4 / M6 40 4.5 80 9.0
5/16 / M8 80 9.0 160 18.0
3/8 / M10 120 13.6 240 27.1
1/2 / M12 240 27.1 480 54.2
Input and Output Breakers
Up to 150A 80 9.0 160 18.0
175 - 500A 120 13.6 240 27.1
Table 9 Panelboard main circuit breaker torque specifications
Connection
Torque
lb-in N-m
Busbar-to-Breaker 240 27.1
Table 10 Branch circuit breaker torque specifications
Breaker Size
Torque
lb-in N-m
Up to 30A 20 4.0
40 to 100A 20 5.1
Table 11 Terminal block compression lug torque specifications
AWG Wire Size
or Range
Torque
lb-in N-m
#14 - #10 35 4.0
#8 40 4.5