Branch Circuit Protection; Input Wire And Fuse Sizing; Output (Motor) Wire Sizing - Franklin Electric SubDrive 50 Manual Del Usaurio

ELECTRICAL INSTALLATION
Wiring Guidelines

Branch Circuit Protection

Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protec-
tion 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 maxi-
mum 300% of full load motor output current rating as noted below.

Input Wire and Fuse Sizing

Input Fuse/Breaker
Model
Voltage
208
SubDrive 15
230
208
SubDrive 20
230
208
SubDrive 30
230
208
SubDrive 50
230
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 Motor Family Horsepower
SubDrive 15
234 514 xxxx
SubDrive 20
234 315 xxxx
SubDrive 30
234 316 xxxx
SubDrive 50
234 317 xxxx
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 properly
sealed with watertight shrink tubing. Use extreme caution to avoid damaging or compromising the
motor cable insulation during installation or service.
18
AWG Copper Wire Sizes, 75° C Insulation, and Panel to Drive Cable Lengths (in feet)
Amps
14 12
*
15 110
70
15 135
85
–
20 –
*
20 –
85
25 – –
25 – –
40 – –
40 – –
AWG 600V Copper Wire Sizes, 75° C Insulation, and Motor Cable Lengths (in feet)
14
1.5 (1.1 kW) 420
2.0 (1.5 kW) 320
3.0 (2.2 kW) 240
5.0 (3.7 kW) –
10 8 6 4
185 280 450 710
225 345 550 865
115 180 285 450
140 220 345 550
*
95
145 235 370
*
180 285 455
115
–
– 150 235
*
– 115 185 290
12 10
670 1060
510 810
390 620
230 370
3 2 1 1/0
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
8 6
– –
1000 –
990 –
590 920
1
2/0
–
–
–
–
–
–
735
895
4
–
–
–
–