User Manual

User’s Guide — 39
Re-sizing Wire Based on
Different Insulation Ratings
What wire size is required for a 75°C
copper branch circuit carrying a load of
260 amps? What would the wire size be
if 90°C copper is used?
Steps Keystrokes Display
Clear calculator
o o 0.
Set to 75°C
S 7 3Ø 75 Cu 0.
Enter amps 260 A AMPS 260.
Find wire size
w AWG 300 CU
WIRE SIZE
Change to 90˚
S 9 AWG 0000 CU
WIRE SIZE
Reset to 60˚ S 6 o 0.
and Clear