Calculated Industries ElectriCalc Pro User Manual - — 47

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 — 47

(cont’d)

STaRTER SIZE

What NEMA size Starter is required for a 575 Volt, 3Ø, 20 HP 

Induction motor?

KeysTRoKe

DIsPlay

0.

1. Set to 3-phase:

(3Ø)

3Ø

  3 Ph 

2. Enter Volts:

VolT  575.  

3. Enter HP:

InD*  20. hP

* If 

iND is not shown, press   until iNDis displayed in the upper left 

area of the display.

4. Solve for Starter Size:

(Starter)

sTaR  

sIZe

  2

OVERlOaD PROTECTION SIZE

What Overload Protection device size is required for an Induction 

motor with a nameplate Current rating of 19.2 Amps and a 1.0 

service factor? What is the required Overload rating at 125% (for a 

1.15 service factor)?

KeysTRoKe

DIsPlay

0.

1. Enter nameplate Current:

aMPs    19.2  

2. Find Overload size:

 aMPs  22.08 o l  

3. Display percent used:

%flC  115. 

%