52 —
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lectri
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finding Conduit size —
Multiple conductors, Different Wire Sizes and types
Three 1/0 THWN 75°C conductors and one #2 XHHW 75°C Copper
conductor are to connect to a panel board using a single Conduit.
What is the cross-sectional area of Wires, Conduit Size and actual
fill Area?
Note
: The cross-sectional Areas are the same for both THHN and
THWN; display will show as THHN.
KeysTRoKe
DIsPlay
0.
1. Set to 75º C:
(75º)
75
0.
2. Set to Copper (if necessary):
(
Cu/Al
)
75 Cu
0.
3. Enter Conduit Type:
(Cond Type)
fMC none
ConD
4. Enter first Wire Size:
*
aWG 0 Cu
WIRe sIZe
5. Enter number of THWN Wires:
Thhn 3.
WIRes
6. Find cross-section Wire Area:
Thhn 0.5565
WIRe aRea
7. Enter second Wire Size:
*
aWG 2 Cu
WIRe sIZe
8. Enter number of XHHW Wires:
XhhW 1.
WIRe
9. Find cross-sectional Wire Area:
XhhW 0.1146
WIRe aRea
