Calculated Industries ElectriCalc Pro 5060 User Manual page 45

IMPORTANT NOTE ON
VOLTAGE DROP CALCULATIONS
The ElectriCalc Pro calculates voltage
drop and wire size using DC resistance
as defined by the 2002 NEC. To find
the voltage drop for a specific wire size,
you must first enter amps and the one-
way wire length (and other required
variables), entering the specific wire
size last . Otherwise, for your safety the
calculator will recalculate the wire sizes
based on the '99 NEC Ampacity Tables
and maximum allowable voltage drop.
Finding Single-Phase
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?
Steps
Reset calculator
Set to 1-phase
Set to 75°C
Enter amps
Enter volts
Enter length
Enter wire size
Solve volt. drop
Solve % v.drop
Keystrokes
[Set] [x] [On/C]
[Set] [1]
[Set] [7]
11 [Amps]
208 [Volts]
175 [Length]
8 [WireSz]
[VD%]
[VD%]
User's Guide — 43
Display
1Ø 75 Cu 1 PH
11. AMPS
208. VOLT
175. FEET
AWG WIRE SIZE
3.0 DROP V
1.4 DROP V %
0.
1 PH
8 CU