
User’s Guide — 55
Finding Number of Wires in Ex-
isting Conduit — Same Size,
Various Types
Find the maximum number of #10
THHN copper wires that can be pulled
through an existing 3” EMT conduit.
How many XHHW wires? How many
THW wires?
Steps
Keystrokes
Display
Clear calculator
[On/C] [On/C]
0.
Enter cond. type
1 [Set] [CondSz]
EMT
nonE COND
Enter wire size
10 [WireSz]
10 CU
AWG WIRE SIZE
Enter conduit size
3 [CondSz]
3.00 in
EMT COND SIZE
Find max THHN #
[#THHN]
167.
THHN TTL WIRES
Find max XHHW#
[#XHHW]
145.
XHHW TTL WIRES
Find max THW #
[#THW]
145.
THW TTL WIRES
Finding Conduit Size - Multiple
Conductors Different Wire Sizes
& 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-
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