Calculated Industries ElectriCalc Pro User Manual - — 49

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 — 49

finding Motor branch-Circuit Wire size and Conduit size — 

Same Wire type and Size

What size THHN Copper Wire and RMC Conduit are needed to 

connect a 10 HP 1Ø Induction motor to a 115 Volt source?

KeysTRoKe

DIsPlay

0.

1. Set to 1-Phase:

(1Ø)

1 Ø

  1 Ph 

2. Set to 60º C:

(60º)

1 Ø 60

  1 Ph 

3. Set to Copper (if necessary):

(Cu/Al)

1 Ø 60 Cu 

  1Ph  

4. Enter Volts:

VolT  115.  

5. Enter Horsepower:

InD*  10. hP

* If 

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

area of the display.

6. Display Full-Load Amps:

flC  100.  

a

7. Find Wire Size at 125% Ampacity:

 (125%)

     aWG  0 Cu  

WIRe sIZe  125%

8. Find Wire Ampacity:

        Ø* 125.0  

WIRe  a125%

* The Wire Size will be shown in the upper left area of the display when 

displaying the Wire Ampacity rating.

9. Enter Conduit Type and find Conduit Size:

 (Cond Type)

   RMC  1.25  in  

ConD sIZe

(cont’d)