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
