Rockwell Automation 1336T Wiring and Grounding Guide, (PWM) AC Drives - Manual (Page 66)

66 Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014
Chapter 4 Best Practices
Figure 29 - Proper Cabinet Ground - Drives and Susceptible Equipment
Within Conduit
Do not route more than three sets of motor leads (three drives) in the same
conduit. Maintain fill rates per applicable electrical codes.
If possible, avoid running incoming power leads and motor leads in the same
conduit for long runs.
R S T PE U V W PE U V W PE
Incoming Power
Conduit/Armor
Common Mode
Current on Armor or
Conduit
Output Conduit or Armor
(bonded to cabinet)
Common Mode Current on Cabinet
Backplane/Subpanel
Cabinet Backplane/
Subpanel
IMPORTANT Do not run power or motor cables with control or communications cables in the
same conduit.