Emerson 30-130 kVA Power Supply User Manual


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28 Wiring Inspection
10.0 WIRING INSPECTION
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Table 1 Power Wiring Terminals - Factory Supplied
UPS Module Rating Connection Type
30-130 kVA Bus bars. See Outline Drawings for dimensions.
Use 75°C 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 tools and procedures 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)
Cable Size or Range Lb-in N-m
#6 - #4 100 11
#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
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.
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