Loading ...
Loading ...
Loading ...
32 — electricalc
®
Pro
Re-Sizing Wire Based on Different Insulation Ratings
What Wire Size is required for a 3Ø, 75°C Copper branch
circuit carrying a load of 260 Amps? What would the Wire Size
be if 90°C Copper is used?
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 260.
5. Find Wire Size:
AWG 300 CU WIRE SIZE
6. Change to 90º C:
(90º)
3Ø 90 Cu AWG 0000 CU WIRE SIZE
Wire Sizing Based on Ambient Temperature
Find the 90°C Copper 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 20°C?
KEYSTROKE DISPLAY
0.
1. Set to 1-Phase:
(1Ø)
1 Ø 1 PH
Loading ...
Loading ...
Loading ...