Rockwell Automation 284E ArmorStart with EtherNet/IP - User Manual - Manual (Page 52)

52 Rockwell Automation Publication 280E-UM001B-EN-P - July 2012
Chapter 2 Installation and Wiring
ArmorConnect Cable Ratings The ArmorConnect Power Media cables are rated per UL Type TC
600V 90°C Dry 75°C Wet, Exposed Run (ER) or MTW 600V 90°C or
STOOW 105°C 600V - Canadian Standards Association (CSA) STOOW 600V
FT2. For additional information regarding ArmorConnect Power Media refer to
the Industrial Controls Catalog.
Branch Circuit Protection Requirements for ArmorConnect
Three-Phase Power Media
When using ArmorConnect Three-Phase Power Media, fuses or circuit breakers
can be used for the motor branch circuit protective device, for the group motor
installations.
For 25 A rated ArmorConnect cable for trunk and taps:
Circuit Breaker: Suitable for use on a circuit capable of delivering not more than
65 000 RMS symmetrical amperes at 480V AC maximum when protected by
Bulletin 140U-H frame circuit breaker, not rated more than 480V, 100 A and a
maximum interrupting of 65 000 RMS symmetrical amperes Short Circuit
Current Rating (SCCR).
Fusing: Suitable for use on a circuit capable of delivering not more than 65 000
RMS symmetrical amperes (SCCR) at 600V AC maximum when protected by
CC, J, and T class fuses.
For 10 A and 15 A rated ArmorConnect taps:
Circuit Breaker: Suitable for use on a circuit capable of delivering not more than
45 000 RMS symmetrical amperes at 480Y/277V AC maximum when protected
by Cat. No. 140U-D6D3-C30 circuit breaker, not rated more than 480V, 30 A,
having an interrupting rating not less than 45 000 RMS symmetrical amperes,
480Y/277V AC maximum.
Fusing: Suitable for use on a circuit capable of delivering not more than 65 000
RMS symmetrical amperes (SCCR) at 600V AC maximum when protected by
CC, J, and T class fuses, rated 40 A non-time delay or 20 A time delay.
WARNING: The total circuit impedance including each cable assembly's own
impedance, must be low enough to ensure any short-circuit or ground fault current that
can flow through any assembly, will be large enough to operate the magnetic trip of the
Cat. No. 140U-D63-C* circuit breaker. Refer to your local electrical code for acceptable
practices for this evaluation.