Calculated Industries 5065 - Manual (Page 37)

32 — ElectriCalc Pro
Finding Motor Wire Size and
Ampacity
Find the wire size required to connect a
continuous run, 3Ø, 3 HP induction motor
into a 230V circuit.
Steps Keystrokes Display
Clear calculator
o o
0.
Set to 3-phase
S 3
3 PH
Enter Volts
2 3 0 U VOLT 230.
Enter HP
3 h
IND 3. HP
Find load current
A
FLC 9.6 A
Find 125% A size
S w
AWG 14 CU
WIRE SIZE 125%
Find max ampacity
w
14* 20.0
WIRE A125%
*Display will show wire size in the upper left
when displaying wire ampacity rating.
Finding Synchronous Motor
Horsepower
A synchronous motor is defined as having
a 27 Amp load on a 240 Volt, 3Ø circuit.
What is its Horsepower?
Steps Keystrokes Display
Clear calculator
o o
0.
Set to 3-phase
S 3
3 PH
Set to synch.
S 8
SYNC 0.
Enter Volts
2 4 0 U VOLT 240.
Enter Amps
2 7 A AMPS 27.
Solve for HP
h
SYNC 25. HP
Set to ind. motor
S 8 S 8
IND 0.