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O & M Manual – Insulated Case ATS Rev: October 2020
Publication Number:
MN0100700E
Version: V10.01.20
Page 79
9.2.
Appendix B
*FIELD CABLE SIZE & LUG TORQUE REQUIREMENTS
USE COPPER WIRE ONLY
LINE-LOAD-NEUTRAL UNLESS OTHERWISE SPECIFIED
REQUIRED MAINTENANCE
The following cable lug torques are required to be checked every six months to maintain the Lake
Shore Electric Corporation exclusive "one year" warranty.
I.
TORQUE – SOCKET HEAD SCREWS
Warning:
Whenever bus and cable connections are being maintained, all power sources to
the transfer switch must be disconnected and locked out.
Socket Size (inches)
Across Flats
Torque (LB-IN.)
1/8
45
5/32
100
3/16
120
7/32
150
1/4
200
5/16
275
3/8
375
1/2
500
9/16
600