25
Figure 17. Main Bus Joints—Auxiliary Section
Figure 18. Main Bus Joints Connection Configurations
SPACER IF NO
BREAKER RISER (TYP.)
ONE MAIN BUS BAR
ONE 1/4 X 4 COPPER or
THREE MAIN BUS BARS
THREE 3/8 X 6 COPPER or
TWO MAIN BUS BARS
TWO 3/8 X 6 COPPER or
MAIN BUS (TYP.)
ONE 3/8 X 6 COPPER or
ONE 3/8 X 6 ALUMINUM
TWO 3/8 X 6 ALUMINUM
THREE 3/8 X 6 ALUMINUM
BREAKER IN
UPPER CELL
C
B
A
SIDE VIEW
MAIN BUS BAR
REAR VIEW
INSULATION BOOT
For Illustration Only Shown with 3 Bars in Phase A
and 2 Bar in Phase B and 1 Bar in Phase C
B
A
C
Molded Glass Polyester Support
Illustration depicts arrangement with
standard molded glass polyester bus support.
Electrical Connections
Courtesy of NationalSwitchgear.com
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