Bonding Multiple Subpanels; Planning Your Panel Layout - Allen-Bradley Ultra1500 2092-DA1 User Manual

Planning Your Panel Layout

Bonding Multiple Subpanels

Bonding multiple subpanels creates a common low impedance exit path for
the high frequency energy inside the cabinet. Subpanels that are not bonded
together may not share a common low impedance path. This difference in
impedance may affect networks and other devices that span multiple panels.
Refer to the figure below for recommended bonding practices.
Figure 1.4
Multiple Subpanels and Cabinet
Recommended:
Bond the top and bottom of each subpanel to the cabinet using
25.4 mm (1.0 in.) by 6.35 mm (0.25 in.) wire braid.
This section outlines the practices which minimize the possibility of
noise-related failures as they apply specifically to Ultra1500 installations. For
more information on the concept of electrical noise reduction, refer to System
Design for Control of Electrical Noise Reference Manual (publication
GMC-RM001x-EN-P).
Installing Your Ultra1500
Bonded cabinet
ground bus to
subpanel
Scrape the paint around each fastener to
maximize metal to metal contact.
Publication 2092-UM001D-EN-P — July 2005
1-13