Cut Sheet

19
Technical Data TD01701001E
Effective March 2017
UL low-voltage busway
Pow-R-Way III
EATON www.eaton.com
Physical data (continued)
Standard and flush flanges (Figure 20)
Flanges provide a direct connection to low-voltage switchgear,
switchboards, motor control centers, and other apparatus. Cutout
dimensions and drilling plans are provided with the customer
drawings and it is the responsibility of the switchgear manufacturer
to provide the opening, flange drillings, connecting hardware, and
bus risers in their equipment. For proper coordination between
busway and other equipment, detailed drawings, including
switchgear orientation, must accompany the order. A standard
flange can be supplied to the left or right of a section, as required.
A flush flange is used when the busway must lay close to the top
of a switchboard. The edge of the busway is 1.25 inches (31.8 mm)
from the top of the switchboard.
ote:N All dimensions are to the centerline of the Pow-R-Bridge.
Table 25. Switchboard flanges
UL 857 ampere rating Dimensions in inches (mm)
Cu Al
Flush flange
min. leg length X
Standard flange
min. leg length X
225 225 15.00 (381.0) 12.00 (304.8)
400 400 15.00 (381.0) 12.00 (304.8)
600 600 15.00 (381.0) 12.00 (304.8)
800 — 15.00 (381.0) 12.00 (304.8)
1000 — 15.00 (381.0) 12.00 (304.8)
1200 800 15.00 (381.0) 12.00 (304.8)
1350 1000 15.00 (381.0) 12.00 (304.8)
1600 1200 15.00 (381.0) 12.00 (304.8)
2000 1350 15.00 (381.0) 12.00 (304.8)
— 1600 15.00 (381.0) 12.00 (304.8)
2500 2000 15.00 (381.0) 12.00 (304.8)
3200 — 15.00 (381.0) 12.00 (304.8)
4000 2500 15.00 (381.0) 12.00 (304.8)
— 3200 15.00 (381.0) 12.00 (304.8)
5000 4000 15.00 (381.0) 12.00 (304.8)
Vault flanges
Vault flanges are used to enter a utility vault for termination to the
utility transformer. Each vault flange is custom designed to meet
each specific utility specification. Vault flanges may look similar to
those shown in Figure 21. Please consult the factory for specific
dimensions based upon utility specifications.
Figure 20. Flanges
Figure 21. Vault flanges
1.00
(25.4)
A
B
N
C
B
A
G
C