38 — ElectriCalc Pro
Wire Sizing Based
on Ambient Temperature
Find the 90°C aluminum wire size
needed to connect a 47,700 volt-amp
load to a 240 volt, single-phase source.
What is the adjusted wire size, if the
ambient temperature rating is changed
from the default 30°C to 40°C?
Steps
Keystrokes
Display
Clear calculator
[On/C] [On/C]
0.
Set to 1-phase
[Set] [1]
1 PH
Set to 90°C
[Set] [9]
1 Ø 90 Cu 1 PH
Set toAl
[Set] [4]
1 Ø 90 Al 1 PH
Enter VA
47700 [VA]
47,700. VA
Enter volts
240 [Volts]
240. VOLT
Find amps
[Amps]
198.75 AMPS
Find wire size
[WireSz]
0000 AL
AWG WIRE SIZE
Change ambient
temperature
40 [Set] [2]
AMB° 40.˚C
Find adjusted
wire size
[WireSz]
250 AL
AWG WIRE SIZE
Reset amb. temp
30 [Set] [2]
AMB° 30.˚C
*NOTE: Ambient temperature will re-
main at 40°C unless you change it or
perform an ALL CLEAR ([Set] [x]).
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