Calculated Industries 5060 - Manual (Page 49)

User’s Guide — 47
* NOTE: See “Settings” for a list of
Permanent Values/settings. Changing
these settings may affect your calculations.
Finding Three-Phase
Voltage Drop
A 20-amp three-phase load is being fed
by a 230-volt source located 150 feet
away. The installation specifications
require 75°C #10 THW stranded copper
conductor. What is the voltage drop on
this branch circuit?
Steps Keystrokes Display
Clear calculator
o o
0.
Set to 75°C
S 7
3Ø 75 Cu 0.
Enter amps
2 0 A
AMPS 20.
Enter volts
2 3 0 U VOLT 230.
Enter length(feet)
1 5 0 l FEET 150.
Find VD wire size
w
AWG 10 CU
VD WIRE SIZE
Solve volt. drop
v
DROP 6.4 V
Solve % v.drop
v
DROP 2.8 V %
* NOTE: See “Settings” for a list of
Permanent Values/settings. Changing
these settings may affect your calculations.