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34 — electricalc
®
Pro
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?
KEYSTROKE DISPLAY
0.
1. Set to 3-Phase:
(3Ø)
3Ø 3 PH
2. Set to 75º C:
(75º)
3Ø 75 3 PH
3. Set to Copper (if necessary):
(Cu/Al)
3Ø 75 Cu 3 PH
4. Enter Amps:
AMPS 265.
5. Find Wire Size:
AWG 300 CU WIRE SIZE
6. Change to Aluminum:
(Cu/Al)
3Ø 75 Al AWG 400 AL WIRE SIZE
7. Display Wire Ampacity:
4ØØ* 270.0 WIRE A
* The Wire Size will be shown in the upper left area of the display when
displaying the Wire Ampacity rating.
8. Display CMIL:
CMIL 400,000. WIRE
9. Display NEC Table:
NEC 310.15.b.16
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