User's Guide — 33
Steps Keystrokes Display
Enter wire size
8 [WireSz]
8 CU
AWG WIRE SIZE
Solve volt. drop
[VD%]
3.0 DROP V
Solve % v.drop
[VD%]
1.4 DROP V %
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
Reset calculator
[Set] [x]
0.
Set to 75°C
[Set] 7
3Ø 75 Cu 0.
Enter amps
20 [Amps]
20. AMPS
Enter volts
230 [Volts]
230. VOLT
Enter length(feet) 150 [Length]
150. FEET
Enter VD wire size10 [WireSz]
10 CU
AWG WIRE SIZE
Find VD
[VD%]
6.4 DROP V
Find VD%
[VD%]
2.8 DROP V %
