liquid tight conduit filled with wire - Liquidtight Flexible Non-Metallic Conduit(LFNC-A, LFNC-B, LFNC-C) and Liquidtight Flexible Metallic Conduit(LFMC)

Liquid Tight Flexible Conduit Fill Chart

This conduit fill chart is used to determine how many wires can be safely put into Liquid Tight conduit. Each row going across is a different conduit size and type of Liquid Tight Flexible Conduit, either Liquidtight Flexible Nonmetallic Conduit (LFNC-A, LFNC-B, LFNC-C) or Liquidtight Flexible Metal Conduit (LFMC). Each column (going up and down) is a different gauge of wire, either AWG or MCM. The results show the allowable number of wires for each size and type of flexible conduit and wire, based on the 2020 NEC® code for electrical conduit pipe.

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Conduit
Trade Size
in Inches

Wire Size (THWN, THHN, THWN-2*) Conductor Size
AWG MCM (kcmil)
14 12 10 8 6 4 3 2 1 1/0 2/0 3/0 4/0 250 300 350 400 500 600 700 750
1⁄2 1⁄2 inch LFNC‑A Conduit 13 9 6 3 2 1 1 1 1 1
1⁄2 inch LFNC‑B Conduit 13 9 6 3 2 1 1 1 1 1
1⁄2 inch LFNC‑C Conduit 12 9 5 3 2 1 1 1 1 1
1⁄2 inch LFMC Conduit 13 9 6 3 2 1 1 1 1 1
3⁄4 3⁄4 inch LFNC‑A Conduit 22 16 10 6 4 2 1 1 1 1 1 1 1
3⁄4 inch LFNC‑B Conduit 22 16 10 6 4 2 1 1 1 1 1 1 1
3⁄4 inch LFNC‑C Conduit 21 15 10 5 4 2 1 1 1 1 1 1 1
3⁄4 inch LFMC Conduit 22 16 10 6 4 2 1 1 1 1 1 1 1
1 1 inch LFNC‑A Conduit 35 25 16 9 6 4 3 3 1 1 1 1 1 1 1 1
1 inch LFNC‑B Conduit 36 26 16 9 7 4 3 3 1 1 1 1 1 1 1 1
1 inch LFNC‑C Conduit 34 25 15 9 6 4 3 3 1 1 1 1 1 1 1 1
1 inch LFMC Conduit 36 26 16 9 7 4 3 3 1 1 1 1 1 1 1 1
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 62 45 28 16 12 7 6 5 4 3 2 1 1 1 1 1 1 1 1 1
1 1⁄4 inch LFNC‑B Conduit 63 46 29 16 12 7 6 5 4 3 2 1 1 1 1 1 1 1 1 1
1 1⁄4 inch LFNC‑C Conduit 61 44 28 16 11 7 6 5 3 3 2 1 1 1 1 1 1 1 1
1 1⁄4 inch LFMC Conduit 63 46 29 16 12 7 6 5 4 3 2 1 1 1 1 1 1 1 1 1
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 83 60 38 22 16 9 8 7 5 4 3 3 2 1 1 1 1 1 1 1 1
1 1⁄2 inch LFNC‑B Conduit 81 59 37 21 15 9 8 7 5 4 3 3 2 1 1 1 1 1 1 1 1
1 1⁄2 inch LFNC‑C Conduit 81 59 37 21 15 9 8 7 5 4 3 3 2 1 1 1 1 1 1 1 1
1 1⁄2 inch LFMC Conduit 81 59 37 21 15 9 8 7 5 4 3 3 2 1 1 1 1 1 1 1 1
2 2 inch LFNC‑A Conduit 138 100 63 36 26 16 13 11 8 7 6 5 4 3 3 2 1 1 1 1 1
2 inch LFNC‑B Conduit 134 97 61 35 25 15 13 11 8 7 6 5 4 3 3 2 1 1 1 1 1
2 inch LFNC‑C Conduit 135 98 62 36 26 16 13 11 8 7 6 5 4 3 3 2 1 1 1 1 1
2 inch LFMC Conduit 134 97 61 35 25 15 13 11 8 7 6 5 4 3 3 2 1 1 1 1 1
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — — — — — — — — — — — — — — — — — — — —
2 1⁄2 inch LFNC‑B Conduit — — — — — — — — — — — — — — — — — — — — —
2 1⁄2 inch LFNC‑C Conduit — — — — — — — — — — — — — — — — — — — — —
2 1⁄2 inch LFMC Conduit 201 146 92 53 38 23 20 17 12 10 8 7 6 5 4 3 3 2 1 1 1
3 3 inch LFNC‑A Conduit — — — — — — — — — — — — — — — — — — — — —
3 inch LFNC‑B Conduit — — — — — — — — — — — — — — — — — — — — —
3 inch LFNC‑C Conduit — — — — — — — — — — — — — — — — — — — — —
3 inch LFMC Conduit 308 225 141 81 59 36 30 26 19 16 13 11 9 7 6 5 5 4 3 3 3
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — — — — — — — — — — — — — — — — — — — —
3 1⁄2 inch LFNC‑B Conduit — — — — — — — — — — — — — — — — — — — — —
3 1⁄2 inch LFNC‑C Conduit — — — — — — — — — — — — — — — — — — — — —
3 1⁄2 inch LFMC Conduit 401 292 184 106 76 47 40 33 25 21 17 14 12 10 8 7 6 5 4 4 3
4 4 inch LFNC‑A Conduit — — — — — — — — — — — — — — — — — — — — —
4 inch LFNC‑B Conduit — — — — — — — — — — — — — — — — — — — — —
4 inch LFNC‑C Conduit — — — — — — — — — — — — — — — — — — — — —
4 inch LFMC Conduit 523 381 240 138 100 61 52 44 32 27 23 19 15 12 11 9 8 7 6 5 5

Wire Size

To jump to the section of the Conduit Fill Chart for your gauge of wire, select a wire size.

AWG Wire Size

#14 wire ↓

#12 wire ↓

#10 wire ↓

#8 wire ↓

#6 wire ↓

#4 wire ↓

#3 wire ↓

#2 wire ↓

#1 wire ↓

1/0 wire ↓

2/0 wire ↓

3/0 wire ↓

4/0 wire ↓

MCM Wire Size

250 mcm ↓

300 mcm ↓

350 mcm ↓

400 mcm ↓

500 mcm ↓

600 mcm ↓

700 mcm ↓

750 mcm ↓

Conduit
Trade Size
in
Inches

AWG Wire Size (THWN, THHN)
Conductor Size
14 12 10
1⁄2 1⁄2 inch LFNC‑A Conduit 13 9 6
1⁄2 inch LFNC‑B Conduit 13 9 6
1⁄2 inch LFNC‑C Conduit 12 9 5
1⁄2 inch LFMC Conduit 13 9 6
3⁄4 3⁄4 inch LFNC‑A Conduit 22 16 10
3⁄4 inch LFNC‑B Conduit 22 16 10
3⁄4 inch LFNC‑C Conduit 21 15 10
3⁄4 inch LFMC Conduit 22 16 10
1 1 inch LFNC‑A Conduit 35 25 16
1 inch LFNC‑B Conduit 36 26 16
1 inch LFNC‑C Conduit 34 25 15
1 inch LFMC Conduit 36 26 16
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 62 45 28
1 1⁄4 inch LFNC‑B Conduit 63 46 29
1 1⁄4 inch LFNC‑C Conduit 61 44 28
1 1⁄4 inch LFMC Conduit 63 46 29
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 83 60 38
1 1⁄2 inch LFNC‑B Conduit 81 59 37
1 1⁄2 inch LFNC‑C Conduit 81 59 37
1 1⁄2 inch LFMC Conduit 81 59 37
2 2 inch LFNC‑A Conduit 138 100 63
2 inch LFNC‑B Conduit 134 97 61
2 inch LFNC‑C Conduit 135 98 62
2 inch LFMC Conduit 134 97 61
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 201 146 92
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 308 225 141
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 401 292 184
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 523 381 240
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Conduit
Trade Size
in
Inches

AWG Wire Size (THWN, THHN)
Conductor Size
8 6 4
1⁄2 1⁄2 inch LFNC‑A Conduit 3 2 1
1⁄2 inch LFNC‑B Conduit 3 2 1
1⁄2 inch LFNC‑C Conduit 3 2 1
1⁄2 inch LFMC Conduit 3 2 1
3⁄4 3⁄4 inch LFNC‑A Conduit 6 4 2
3⁄4 inch LFNC‑B Conduit 6 4 2
3⁄4 inch LFNC‑C Conduit 5 4 2
3⁄4 inch LFMC Conduit 6 4 2
1 1 inch LFNC‑A Conduit 9 6 4
1 inch LFNC‑B Conduit 9 7 4
1 inch LFNC‑C Conduit 9 6 4
1 inch LFMC Conduit 9 7 4
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 16 12 7
1 1⁄4 inch LFNC‑B Conduit 16 12 7
1 1⁄4 inch LFNC‑C Conduit 16 11 7
1 1⁄4 inch LFMC Conduit 16 12 7
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 22 16 9
1 1⁄2 inch LFNC‑B Conduit 21 15 9
1 1⁄2 inch LFNC‑C Conduit 21 15 9
1 1⁄2 inch LFMC Conduit 21 15 9
2 2 inch LFNC‑A Conduit 36 26 16
2 inch LFNC‑B Conduit 35 25 15
2 inch LFNC‑C Conduit 36 26 16
2 inch LFMC Conduit 35 25 15
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 53 38 23
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 81 59 36
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 106 76 47
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 138 100 61
↑ To Top

Conduit
Trade Size
in
Inches

AWG Wire Size (THWN, THHN)
Conductor Size
3 2 1
1⁄2 1⁄2 inch LFNC‑A Conduit 1 1 1
1⁄2 inch LFNC‑B Conduit 1 1 1
1⁄2 inch LFNC‑C Conduit 1 1 1
1⁄2 inch LFMC Conduit 1 1 1
3⁄4 3⁄4 inch LFNC‑A Conduit 1 1 1
3⁄4 inch LFNC‑B Conduit 1 1 1
3⁄4 inch LFNC‑C Conduit 1 1 1
3⁄4 inch LFMC Conduit 1 1 1
1 1 inch LFNC‑A Conduit 3 3 1
1 inch LFNC‑B Conduit 3 3 1
1 inch LFNC‑C Conduit 3 3 1
1 inch LFMC Conduit 3 3 1
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 6 5 4
1 1⁄4 inch LFNC‑B Conduit 6 5 4
1 1⁄4 inch LFNC‑C Conduit 6 5 3
1 1⁄4 inch LFMC Conduit 6 5 4
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 8 7 5
1 1⁄2 inch LFNC‑B Conduit 8 7 5
1 1⁄2 inch LFNC‑C Conduit 8 7 5
1 1⁄2 inch LFMC Conduit 8 7 5
2 2 inch LFNC‑A Conduit 13 11 8
2 inch LFNC‑B Conduit 13 11 8
2 inch LFNC‑C Conduit 13 11 8
2 inch LFMC Conduit 13 11 8
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 20 17 12
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 30 26 19
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 40 33 25
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 52 44 32
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Conduit
Trade Size
in
Inches

AWG Wire Size (THWN, THHN)
Conductor Size
1/0 2/0 3/0
1⁄2 1⁄2 inch LFNC‑A Conduit 1
1⁄2 inch LFNC‑B Conduit 1
1⁄2 inch LFNC‑C Conduit 1
1⁄2 inch LFMC Conduit 1
3⁄4 3⁄4 inch LFNC‑A Conduit 1 1 1
3⁄4 inch LFNC‑B Conduit 1 1 1
3⁄4 inch LFNC‑C Conduit 1 1 1
3⁄4 inch LFMC Conduit 1 1 1
1 1 inch LFNC‑A Conduit 1 1 1
1 inch LFNC‑B Conduit 1 1 1
1 inch LFNC‑C Conduit 1 1 1
1 inch LFMC Conduit 1 1 1
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 3 2 1
1 1⁄4 inch LFNC‑B Conduit 3 2 1
1 1⁄4 inch LFNC‑C Conduit 3 2 1
1 1⁄4 inch LFMC Conduit 3 2 1
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 4 3 3
1 1⁄2 inch LFNC‑B Conduit 4 3 3
1 1⁄2 inch LFNC‑C Conduit 4 3 3
1 1⁄2 inch LFMC Conduit 4 3 3
2 2 inch LFNC‑A Conduit 7 6 5
2 inch LFNC‑B Conduit 7 6 5
2 inch LFNC‑C Conduit 7 6 5
2 inch LFMC Conduit 7 6 5
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 10 8 7
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 16 13 11
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 21 17 14
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 27 23 19
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Conduit
Trade Size
in
Inches

Wire Size (THWN, THHN)
Conductor Size AWG/kcmil
4/0 250 300
1⁄2 1⁄2 inch LFNC‑A Conduit
1⁄2 inch LFNC‑B Conduit
1⁄2 inch LFNC‑C Conduit
1⁄2 inch LFMC Conduit
3⁄4 3⁄4 inch LFNC‑A Conduit 1
3⁄4 inch LFNC‑B Conduit 1
3⁄4 inch LFNC‑C Conduit 1
3⁄4 inch LFMC Conduit 1
1 1 inch LFNC‑A Conduit 1 1 1
1 inch LFNC‑B Conduit 1 1 1
1 inch LFNC‑C Conduit 1 1 1
1 inch LFMC Conduit 1 1 1
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 1 1 1
1 1⁄4 inch LFNC‑B Conduit 1 1 1
1 1⁄4 inch LFNC‑C Conduit 1 1 1
1 1⁄4 inch LFMC Conduit 1 1 1
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 2 1 1
1 1⁄2 inch LFNC‑B Conduit 2 1 1
1 1⁄2 inch LFNC‑C Conduit 2 1 1
1 1⁄2 inch LFMC Conduit 2 1 1
2 2 inch LFNC‑A Conduit 4 3 3
2 inch LFNC‑B Conduit 4 3 3
2 inch LFNC‑C Conduit 4 3 3
2 inch LFMC Conduit 4 3 3
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 6 5 4
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 9 7 6
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 12 10 8
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 15 12 11
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Conduit
Trade Size
in
Inches

MCM Wire Size (THWN, THHN)
Conductor Size kcmil
350 400 500
1⁄2 1⁄2 inch LFNC‑A Conduit
1⁄2 inch LFNC‑B Conduit
1⁄2 inch LFNC‑C Conduit
1⁄2 inch LFMC Conduit
3⁄4 3⁄4 inch LFNC‑A Conduit
3⁄4 inch LFNC‑B Conduit
3⁄4 inch LFNC‑C Conduit
3⁄4 inch LFMC Conduit
1 1 inch LFNC‑A Conduit 1
1 inch LFNC‑B Conduit 1
1 inch LFNC‑C Conduit 1
1 inch LFMC Conduit 1
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 1 1 1
1 1⁄4 inch LFNC‑B Conduit 1 1 1
1 1⁄4 inch LFNC‑C Conduit 1 1 1
1 1⁄4 inch LFMC Conduit 1 1 1
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 1 1 1
1 1⁄2 inch LFNC‑B Conduit 1 1 1
1 1⁄2 inch LFNC‑C Conduit 1 1 1
1 1⁄2 inch LFMC Conduit 1 1 1
2 2 inch LFNC‑A Conduit 2 1 1
2 inch LFNC‑B Conduit 2 1 1
2 inch LFNC‑C Conduit 2 1 1
2 inch LFMC Conduit 2 1 1
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 3 3 2
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 5 5 4
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 7 6 5
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 9 8 7
↑ To Top

Conduit
Trade Size
in
Inches

MCM Wire Size (THWN, THHN)
Conductor Size kcmil
600 700 750
1⁄2 1⁄2 inch LFNC‑A Conduit
1⁄2 inch LFNC‑B Conduit
1⁄2 inch LFNC‑C Conduit
1⁄2 inch LFMC Conduit
3⁄4 3⁄4 inch LFNC‑A Conduit
3⁄4 inch LFNC‑B Conduit
3⁄4 inch LFNC‑C Conduit
3⁄4 inch LFMC Conduit
1 1 inch LFNC‑A Conduit
1 inch LFNC‑B Conduit
1 inch LFNC‑C Conduit
1 inch LFMC Conduit
1 1⁄4 1 1⁄4 inch LFNC‑A Conduit 1 1
1 1⁄4 inch LFNC‑B Conduit 1 1
1 1⁄4 inch LFNC‑C Conduit 1
1 1⁄4 inch LFMC Conduit 1 1
1 1⁄2 1 1⁄2 inch LFNC‑A Conduit 1 1 1
1 1⁄2 inch LFNC‑B Conduit 1 1 1
1 1⁄2 inch LFNC‑C Conduit 1 1 1
1 1⁄2 inch LFMC Conduit 1 1 1
2 2 inch LFNC‑A Conduit 1 1 1
2 inch LFNC‑B Conduit 1 1 1
2 inch LFNC‑C Conduit 1 1 1
2 inch LFMC Conduit 1 1 1
2 1⁄2 2 1⁄2 inch LFNC‑A Conduit — — —
2 1⁄2 inch LFNC‑B Conduit — — —
2 1⁄2 inch LFNC‑C Conduit — — —
2 1⁄2 inch LFMC Conduit 1 1 1
3 3 inch LFNC‑A Conduit — — —
3 inch LFNC‑B Conduit — — —
3 inch LFNC‑C Conduit — — —
3 inch LFMC Conduit 3 3 3
3 1⁄2 3 1⁄2 inch LFNC‑A Conduit — — —
3 1⁄2 inch LFNC‑B Conduit — — —
3 1⁄2 inch LFNC‑C Conduit — — —
3 1⁄2 inch LFMC Conduit 4 4 3
4 4 inch LFNC‑A Conduit — — —
4 inch LFNC‑B Conduit — — —
4 inch LFNC‑C Conduit — — —
4 inch LFMC Conduit 6 5 5

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What are the Advantages of Liquid Tight Conduit?

Liquid Tight conduit is designed to protect wire routed within the conduit from vapors, machine oils, liquids, solids, and weather. The flexibility of Liquid Tight conduit makes it easier to install. Some Liquid Tight flexible conduit can be directly buried or encased in concrete.

LFNC vs LFMC

LFMC (Liquidtight Flexible Metal Conduit) is different from LFNC (Liquid Tight Flexible Nonmetallic Conduit) in that it has a steel metal layer under the plastic coating, making it suitable in locations where protection from physical damage is necessary.

What are the Different Types of LFNC (Liquid Tight Flexible Nonmetallic Conduit)?

LFNC, also called FNMC (Flexible Non-Metallic Conduit), is divided into three types by the NEC®: LFNC-A, LFNC-B, and LFNC-C. LFNC‑A Conduit stands for Liquidtight Flexible Nonmetallic Conduit, Type A. LFNC-A has a smooth inner PVC core, at least one reinforcement layer, and a smooth outer PVC jacket. LFNC-B (Liquidtight Flexible Nonmetallic Conduit, Type B) has an inner PVC layer with integrated reinforcement coils within the raceway wall itself. Liquidtight flexible conduit with corrugated internal and external surface without integral reinforcement within the raceway wall is LFNC-C.

Shop Electrical Conduit, Fittings & Wire

LFMC Conduit

LFMC Conduit

Shop LFMC Conduit

LFNC Conduit

LFNC Conduit

Shop LFNC Conduit

Liquidtight Conduit Fittings

Flexible Metal Conduit

Shop Liquidtight Conduit Fittings

Wire Mesh Strain Relief

LFMC Wire Mesh Strain Relief

Shop Wire Mesh Strain Relief

LFMC Sealing Gasket

Sealing Gasket for LFMC Liquidtight Flexible Metal Conduit

Shop LFMC Sealing Gasket

THWN & THHN Wire

THWN and THHN Building Wire and Cable

Shop THWN & THHN Wire

More Conduit, Wire, and Cable Guides:

*The LFNC-C chart includes THHW, THWN, and TWWN-2 wire, but does not include type THHN wire.

Above information referenced from Table C.5, Table C.6, Table C.7, and Table C.8 in the 2020 NEC® (National Electric Code®).

For more information on the following types of conduit, please see our conduit fill charts below, which are based on Appendix C of the National Electric Code® (NEC®) of 2020.

Electrical Metal Tubing (EMT) -- Table C.1, our Conduit Fill Chart for EMT, or our EMT Conduit Fill Chart for Compact Wire

Electrical Non-Metallic Tubing (ENT) -- Table C.2, or our ENT Conduit Fill Chart

Flexible Metallic Conduit -- Table C.3, our Conduit Fill Chart for Flexible Metal Conduit, or FMC Conduit Fill Chart for Compact Wire

Intermediate Metal Conduit (IMC) -- Table C.4, or our Conduit Fill Chart for IMC, or IMC Conduit Fill Chart for Compact Wire

Rigid Metallic Conduit -- Table C.9, our Conduit Fill Chart for Rigid Metal Conduit , or RMC Conduit Fill Chart for Compact Wire

Rigid PVC Conduit, Schedule 80 -- Table C.10, or our Rigid Schedule 80 PVC Conduit Fill Chart

Rigid PVC Conduit, Schedule 40 -- Table C.11, or our Rigid Schedule 40 PVC Conduit Fill Chart

Type A PVC Conduit -- Table C.12

Type EB PVC Conduit -- Table C.13

If you have any other questions, see the NEC® Code Book or ask an Elliott Electric Salesperson.

Warning: When using this information to perform electrical work, call a licensed electrician and consult the NEC® for safety. All licensed electricians have passed examinations covering the National Electric Code®, know state and local building codes, and may carry insurance to cover damages.