Electrical Schematic

PAGE 9
LANCASTER HYDRO-FORCE
4" Submersible Motors
Cable Tests
TM
Identify Cable Leads (when color is unknown):
For 3-wire single phase motor installations, if the colors on the individual drop cables
cannot be determined and the leads cannot be positively identified, follow this procedure-
1) Disconnect all three drop cables from the control box. For temporary identification, tag
each cable (1, 2, 3).
2) Using an ohmmeter, measure and record the resistance between the following cable
combinations:
Cable 1 to Cable 2
Cable 1 to Cable 3
Cable 2 to Cable 3
Note: The actual ohms values are not important.
This method works regardless of the actual ohm
values; what matters is which reading is highest,
intermediate and lowest.
Find the highest resistance reading.
The lead not used in the highest resistance reading is the yellow lead.
Use the yellow lead and each of the other two leads to get two readings:
Highest is the red lead.
Lowest is the black lead.
LANCASTER HYDRO-FORCE
4" Submersible Motors - Single Phase, 60 Hz
Cable Selection
TM
Two or Three Wire Cable - With Ground
Maximum Cable Length in Feet (Service Entrance to Motor)
Select drop cable designed for use in water. The insulation on the conductor should be THW
or equivalent.
Chart based on copper wire. Cable lengths allow for a 5% voltage drop running at max amps.
Single phase control boxes without line contactors (Quick-Disconnect design up to 1 HP)
can be connected at any point in the cable run. Single phase control boxes with line contactors
should be connected within the first 25% of the total maximum allowable.
Lengths meet the U.S. National Electrical Code ampacity for either 60°C or 75°C cable,
individual insulated conductors or jacketed. Flat molded cable is to be considered jacketed.
1/2
3/4
1
1.5
HP
Motor Rating
Volts
230
AWG Copper Wire Size
14 12 10 8 6
400
300
250
190
650 1020 1610 2510
480 760 1200 1870
400 630 990 1540
310 480 770 1200