Calculated Industries ElectriCalc Pro Pocket Reference Manual - Amb°  50.  ºc

P

ocket

 R

efeRence

 G

uide

 — 25

(cont’d)

7. Set to 50º C Ambient Temperature:

(

Ambº

)

Amb  

AMB°  50.  ºC

8. Find Derated Wire Size:

(D/R Size)

D/R  500 Cu  

WIRE SIZE

9. Reset Ambient Temperature  

and Clear:

3Ø 60  Cu

  0.  

VolTaGe DRoP

The ElectriCalc Pro uses Resistance 

values found in NEC Table 8 Chapter 

9 to determine Voltage Drop, Wire 

Lengths or Wire Sizes given a 

maximum Voltage Drop percentage.

Finding Voltage Drop

You are installing 175 Feet of 75°C, 

#8 THW branch circuit Copper 

conductors to supply an 11A load on a 

208V 1Ø system. What is the source 

Voltage Drop at the load?

KEYSTROKE

DISPLAY

0.

1. Set to 1-Phase:

(1Ø)

 1 Ø

  1 Ph  

2. Set to 75 º C:

(75º)

1 Ø 75

  1 Ph