Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 Installation Instructions, PRIOR to Firmware rev. 3.0 - Manual (Page 22)

Publication 1404-IN007D-EN-P - October 2004
22 Powermonitor 3000
Do not install fuses or other overcurrent protection in the secondary
circuit of a CT.
Refer to System Accuracy Considerations on page 17 for guidelines on
PT and CT selection.
Refer to Technical Specifications on page 59 for information on
voltage isolation levels and wire termination recommendations.
The wiring diagrams depict wiring methods for a variety of power
system configurations. You will need to configure your Powermonitor
3000 to match the power system configuration for correct operation.
Refer to the Powermonitor 3000 User Manual, publication
1404-UM001, for detailed instructions on unit configuration.
IMPORTANT
You may install either two or three CTs for any of the
Delta or Open Delta wiring or voltage modes. Refer
to Figure 21, Figure 23, or Figure 26 for wiring of a 2
CT configuration. Whether there are two or three CTs
in a circuit does not affect the voltage wiring. Refer
to the User Manual, publication 1404-UM001.