Rockwell Automation 1336T Wiring and Grounding Guide, (PWM) AC Drives - Manual (Page 69)

Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014 69
Best Practices Chapter 4
Shield Termination Refer to Shield Splicing on page 55 to splice shielded cables. These methods are
acceptable if the shield connection to the ground is not accomplished by the
gland or connector. Refer to the table associated with each type of clamp for
advantages and disadvantages.
Termination via Circular Clamp
Use the circular section clamping method to clamp the cable to the main panel
closest to the shield terminal. The preferred method for grounding cable shields
is clamping the circular section of 360
° bonding (see
Figure 32 ). This method
has the advantage of covering a wide variety of cable diameters and drilling/
mounting is not required. The disadvantages are cost and availability in all areas.
Figure 32 - Commercial Cable Clamp (heavy duty)
Plain copper saddle clamps (see Figure 33 ) are sold in many areas for plumbing
purposes, but are very effective and available in a range of sizes. They are low cost
and offer good strain relief as well. You must drill mounting holes to use them.
Figure 33 - Plain Copper Saddle Clamp