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Circuit Breaker and Wire Sizing
The minimum circuit breaker size and maximum allowable wire lengths for
connection of motor to the SubDrive300 are given in the following table:
A 10-foot section of cable is provided with the SubDrive300 to connect
the pressure sensors.
NOTE:
• Maximum allowable wire lengths are measured between the
controller and motor.
• Aluminum wires should not be used with the SubDrive300.
• Wire sizing between the service entrance and the controller must
be suffi cient to provide the required maximum input amps to the
controller while conforming to local standards and codes.
• SubDrive300 minimum breaker amps may be lower than AIM
Manual specifi cations for the motors listed due to the soft-starting
characteristic of the SubDrive300 controller.
Controller
Model
Franklin Electric
Motor Model HP
Breaker
Amps
AWG Copper Wire Size
14 12 10 8 6 4
SubDrive300 234 317 xxxx 5 40 140 230 370 590 920 1430
Table 2: Minimum Breaker Size and Maximum Cable Length (in Feet)