ELECTRICAL INSTALLATION
Wiring Guidelines
Branch Circuit Protection
Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit pro-
tection must be provided in accordance with the National Electrical Code and any additional local codes,
or the equivalent. Drive shall be protected by fuse or inverse-time circuit breaker only, rated 300 V, and
a maximum 300% of full load motor output current rating as noted below.
Input (Power) Wire and Fuse Sizing
Input
Model
Voltage
208
SubDrive 15
230
208
SubDrive 20
230
208
SubDrive 30
230
208
SubDrive 50
230
1 1
Based on a 3% voltage drop.
* * 90 °C Insulation only.
NOTE: Minimum breaker amps may vary from AIM Manual specifications because of VFD characteristics.
Output (Motor) Wire Sizing
Model
SubDrive 15
SubDrive 20
SubDrive 30
SubDrive 50
NOTE:
•
The use of 600 V minimum rated motor cable is required.
•
SubDrive models show cable lengths for highest power motor supported by each model. Refer to
the Franklin Electric AIM Manual when using a smaller motor.
•
Maximum allowable wire lengths are measured between the controller and motor.
•
Flat-jacketed submersible motor cable is recommended. All splices in the motor cable must be prop-
erly sealed with watertight shrink tubing. Use extreme caution to avoid damaging or compromising
the motor cable insulation during installation or service.
22
Fuse/
AWG Copper Wire Sizes, 75 °C Insulation, and Panel to Drive Cable Lengths (in feet)
Breaker
14
12
Amps
70*
110
15
85
135
-
20
-
85*
-
25
-
40
-
-
Motor Family
HP (kW)
234 514 xxxx
1.5 (1.1)
234 315 xxxx
2.0 (1.5)
234 316 xxxx
3.0 (2.2)
234 317 xxxx
5.0 (3.7)
10
8
6
4
185
280
450
710
225
345
550
865
115
180
285
450
140
220
345
550
95*
145
235
370
115*
180
285
455
-
150
235
-
115*
185
290
AWG 600 V Copper Wire Sizes, 75 °C Insulation,
and Motor Cable Lengths (in feet)
14
12
420
670
320
510
240
390
-
230
1/0
3
2
1
880
1160
1465
1075
1415
1795
555
730
925
680
895
1130
460
605
765
560
740
935
295
385
490
610
360
470
600
745
10
8
1060
-
810
1000
620
990
370
590
920
1
2/0
-
-
-
-
-
-
735
895
6
4
-
-
-
-
-
-
-