Calculated Industries 5065 - Manual (Page 50)

User’s Guide — 45
Finding Voltage Drop Distance
How far from a three-phase 240 Volt
source can you install a 15 Amp load
using 60°C #10 copper branch circuit
conductors? Assume a 3% allowable
Voltage drop.
Steps Keystrokes Display
Clear calculator
o o
0.
Set to 60°C
S 6
3Ø 60 Cu 0.
Enter Amps
1 5 A
AMPS 15.
Enter Volts
2 4 0 U VOLT 240.
Enter wire size*
1 0 w
AWG 10 Cu
WIRE SIZE
Enter 3% VD
3 v
DROP 3.0 V %
Find distance
l
FEET 234.86987
Find actual
Voltage drop
v
DROP 7.2 V
Find % v.drop
v
DROP 3.0 V %
* Wire size can also be entered in Circular
Mils
(e.g.,
1 0 3 8 0 w
enters
10,380 CMILs and displays 10 AWG
wire size).
NOTE: The calculator automatically
makes adjustments for resistance using
NEC Chapter 9, Table 8, if the insulation
type is other than 75°C.
See “Settings” for a list of Permanent
Values/settings. Changing these settings
may affect your calculations.