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Wiring Inspection 19
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Table 1 Power Wiring Terminals - Factory Supplied
Connection Type
UPS Module Rating
kVA AC Input AC Output Battery Neutral Ground
338 - 1000 Lugs on circuit breakers, or bus
bars (for field supplied lugs).
Refer to installation drawings.
Bus bars for connecting hardware (1/2” on 1-3/4”
centers) are provided. A field supplied lug is
required.
Use 75ƒC copper wire. Select wire size based on the ampacities in
Table 310-16
(see
Table 3
of this manual)
and associated notes of the National Electrical Code (NFPA 70).
Use commercially available solderless lugs for the wire size required for your application. Connect wire to the
lug using tool and procedure specified by the lug manufacturer.
Table 2 Torque 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 48 256 29
Circuit Breakers With Compression Lugs (For Power Wiring)
Current Rating Lb-in N-m
400 - 1200 Amps 300 34
Terminal Block Compression Lugs (For Control Wiring)
AWG Wire Size or Range Lb-in N-m
#22 - #14 3.5 to 5.3 0.4 to 0.6
Use the values in this table unless the equipment is labeled with a different
torque value.