Publicité
Cable Sizing — Single Phase € Three Phase Submersibie Motors
Single Phase Two or Three Wire Cable, 60 Hz (Service Entrance to Motor ~ Maximum Length in Feet)
Motor Rating
| vots|
HP | 14
12
6
1/3 | 130
210
840 | 1300
AWG Copper Wire Size
[з [2 | 1 | o | o | ою | oo |
3540 | 4210
| 5060 |
1610 | 1960 ¡ 2390
2910
4/2 | 100
160
620
1190 | 1460 | 1780
2160
| 6520 | 7960 | 9690 |
2630
L |
1 Foot = .3048 Meter
Lengths without the asterisk * meet the U.S. National Electrical Code ampacity
for elther individual conductors or jacketed 60°C cable.
Lengths marked " meet the NEC ampacity only for individual conductor 60°C
cable in free air or water, not in conduit. Н cable rated other than 60°C is used,
lengths remain unchanged, but the minimum size acceptable for each rating must
be based on the NEC Table column for that temperature cable.
Flat molded cable is considered to be jacketed cable.
Maximum lengths shown maintain motor voltage at 95% of service entrance volt-
age, running at maximum nameplate amperes. If service entrance voltage will be
at least motor nameplate voltage under normal load conditions, 50% additional
length is permissible for all sizes.
This table is based on copper wire. If aluminum wire is to be used, it must be two
sizes larger. Example: (f the table calis for #12 copper wire, #10 aluminum wire
would be required.
The portion of the total cable length which is between the supply and single phase
control box with the line contactor should not exceed 25% of the total maximum
allowable, to ensure rellable contactor operation. Single phase control boxes with-
out line contactors may be connected at any point in the total cable length.
Lengths represent a 5% voltage drop. If 3% is required, multiply by .6 for maxi-
mum feet.
CAUTION — USE OF SMALLER THAN RECOMMENDED CABLE VOIDS WARRANTY, CAN CAUSE FAILURE OF THE MOTOR
TO START AND OPERATE PROPERLY, AND MAY CAUSE CABLE OVERHEATING!
Three Phase Cable, 60 Hz (Service Entrance to Motor - Maximum Length in Feet)
Motor Rating
Volts
AWG Copper Wire Size
==
200V
60 Hz
Three Phase
Three Wire
230V
60 Hz
Three Phase
Three Wire
460ሃ
60 Hz
Three Phase
Three Wire
Page 9
Publicité
