North America applicable cable

NORTH AMERICAApplicable cable

4MTW (60℃ Wet)

  • Reference standardNFPA79 2021Edition
  • LocationWet location

  • Current carrying capacities(A)※1

    (Ambient temperature other than 30℃) =
  • 1Current carrying capacities applied by size and the number of cores
    x
  • 2Correction Factor by Number of wires(4c～)
    x
  • 3Temperature correction factor

※1 This calculation method applies only correction factor by number of wires and temperature correction factor. The adjustment factor may differ according to operating conditions. Please refer to NFPA70. NFPA79.

1Current carrying capacities(A) applied by size and the number of cores.(at30 deg.,Ambient temperature)

Size（AWG） 1c - 3c
20 5
18 7
16 10
14 15
12 20
10 30
8 40
6 55
4 70
2 95
1 110
2/0 145
3/0 165
4/0 195
250 MCM 215
350 MCM 260
400 MCM 280
500 MCM 320

2Correction factor by number of wires(4c～)

No. of cores Correction factor
4 - 6c 0.80
7 - 9c 0.70
10 - 20c 0.50
21 - 30c 0.45
31 - 40c 0.40
41c and above 0.35

3Temperature correction factor

Ambient temperature(℃) Correction factor
21 - 25 1.08
26 - 30 1.00
31 - 35 0.91
36 - 40 0.82
41 - 45 0.71
46 - 50 0.58
51 - 55 0.41
NORTH AMERICA APPICABLE CABLE
TOP Technical Info North America applicable cable MTW (60℃ Wet)

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