Calculated Industries 5070-A Pocket Reference Guide User Manual

Page 21

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P

ocket

R

efeRence

G

uide

— 21

MOTOR FuNCTIONS

The ElectriCalc Pro can calculate

the Full-Load Current (Amps) of a

motor, based on Phase, Voltage and

Motor (Synchronous, Induction, or

DC) Horsepower using NEC Tables

430.247, 430.248 and 430.250.

Finding Full-Load Current

A 2 HP Induction motor operates on

230 Volt, Single-Phase power. What is

the Full-Load Current for this motor?

KEYSTROKE

DISPLAY

 

0.

1. Set to 1-Phase:

 

(1Ш)

1 Ш

1 Ph

2. Enter Volts:

   

VOLT 230.

3. Enter HP:

 

IND* 2. hP

* Press   until

iND is displayed in the

upper left area of the display.

4. Find Full-Load Current:



FLC 12.

A

Finding Motor Wire Size

Find the Wire Size required to connect

a continuous run, 3Ø, 10 HP Induction

motor into a 230V circuit.