User Manual

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 39
Installation & Wiring Chapter 2
Control Wire Requirements
• The maximum length of the shielded cable is 100 feet (30.48 meters).
• All control terminals are for copper wire only in sizes #12…24 AWG.
• Ring lug termination is required for the ground sensor terminals of 193-
CBCT2 and larger.
• The sensor fastener torque is 26…30 lb-in.
• The 193-CBCT1 wires should be twisted before termination by applying
one twist per inch (per 25.4 millimeters).
Table 17 - Control Wire Specifications
Approximate Dimensions
Approximate dimensions are shown in millimeters (inches). Dimensions are not
intended to be used for manufacturing purposes.
IMPORTANT
The shield of the twisted pair cable must be connected to earth ground
at the ground fault sensor with no connection made at the E3 Plus
Overload Relay.
Cat. No.
193-
Max.
Current
[A] Hz
Turns
Ratio
Sensor
Window
I.D.
Max.
Recommended
Cable Size @ 600V
Cat. No.
100-C09 IEC
Contactor
NEMA
Contactor
Size
CBCT1 45 50/60 1000:1 19.1 mm
(.75 in.)
#8 AWG
(10 mm
2
) ➊
…-C37 00…2
CBCT2 90 #2 AWG
(350 mm
2
) ➊
…-C85 00…3
CBCT3 180 #250 MCM
(120 mm
2
) ➊
…-D180 00…4
CBCT4 420 $350 MCM
(185 mm
2
) ➋
…-D240 00…5
➊ For a three-phase system with one cable per phase.
➋ For a three-phase system with two cables per phase.