User’s Guide — 39
Wire Sizing Based on
Material Type
Find the wire size for a 75°C copper
wire carrying a 3Ø load of 265 amps.
What is the equivalent aluminum wire
size?
Steps
Keystrokes
Display
Reset calculator
[Set] [x] [On/C]
0.
Set to 75°C
[Set] [7]
3Ø 75 Cu 0.
Enter amps
265 [Amps]
265. AMPS
Find wire size
[WireSz]
300 CU
AWG WIRE SIZE
Change to alum.
[Set] [4]
400 AL
AWG WIRE SIZE
Sizing Parallel Conductors
What size 60°C insulated copper wire is
required for a single conductor carrying
a 500 amp load in a Free Air environ-
ment (30°C amb. temp.)? What size for
2 parallel conductors? For 3 conduc-
tors?
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