Wire Gauge: Difference between revisions

From Leo's Notes
This page was last edited on 12 June 2021, at 22:46.
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Telephone/network wires are typically AWG 24 or 26. Household wiring is thicker and is typically AWG 12 or 14.
Telephone/network wires are typically AWG 24 or 26. Household wiring is thicker and is typically AWG 12 or 14.


==Gauge Table==
AWG's formula D(AWG)=0.005·92<sup>((36-AWG)/39)</sup> means that:
AWG's formula D(AWG)=0.005·92<sup>((36-AWG)/39)</sup> means that:


* Every 6 gauge decrease doubles the wire diameter
*Every 6 gauge decrease doubles the wire diameter
* Every 3 gauge decrease doubles the wire cross sectional area
*Every 3 gauge decrease doubles the wire cross sectional area


For 00, 000, 0000 gauge wires, calculate them with negative values -1, -2, -3.
For 00, 000, 0000 gauge wires, calculate them with negative values -1, -2, -3.
==Gauge Table==
The table below is for copper conductors. Listed is the maximum frequency for 100% skin depth, or when there is no skin effects.
{| class="wikitable"
{| class="wikitable"
!AWG #
!AWG #
!Diameter (inch)
!Diameter (mm)
!Diameter (mm)
!Resistance Ω/1km
!Area (mm<sup>2</sup>)
Copper
!Resistance (Ω/1km)
!Max Current (A)
!100% skin depth frequency
|-
|-
|0000 (4/0)
|0000 (4/0)
|0.4600
|11.684
|11.6840
|107
|0.16
|0.16072
|302
|125 Hz
|-
|-
|000 (3/0)
|000 (3/0)
|0.4096
|10.4049
|10.4049
|0.20
|85
|0.202704
|239
|160  Hz
|-
|-
|00 (2/0)
|00 (2/0)
|0.3648
|9.2658
|9.2658
|0.26
|67.4
|0.255512
|190
|200  Hz
|-
|-
|0 (1/0)
|0 (1/0)
|0.3249
|8.2515
|8.2515
|0.32
|53.5
|0.322424
|150
|250  Hz
|-
|-
|1
|1
|0.2893
|7.3481
|7.3481
|0.41
|42.4
|0.406392
|119
|325  Hz
|-
|-
|2
|2
|0.2576
|6.5437
|6.5437
|0.51
|33.6
|0.512664
|94
|410  Hz
|-
|-
|3
|3
|0.2294
|5.8273
|5.8273
|0.65
|26.7
|0.64616
|75
|500  Hz
|-
|-
|4
|4
|0.2043
|5.1894
|5.1894
|0.81
|21.2
|0.81508
|60
|650  Hz
|-
|-
|5
|5
|0.1819
|4.6213
|4.6213
|
|16.8
|1.027624
|47
|810  Hz
|-
|-
|6
|6
|0.1620
|4.1154
|4.1154
|1.3
|13.3
|1.295928
|37
|1100  Hz
|-
|-
|7
|7
|0.1443
|3.6649
|3.6649
|
|10.5
|1.634096
|30
|1300  Hz
|-
|-
|8
|8
|0.1285
|3.2636
|3.2636
|2.1
|8.37
|2.060496
|24
|1650  Hz
|-
|-
|9
|9
|0.1144
|2.9064
|2.9064
|
|6.63
|2.598088
|19
|2050  Hz
|-
|-
|10
|10
|0.1019
|2.5882
|2.5882
|3.3
|5.26
|3.276392
|15
|2600  Hz
|-
|-
|11
|11
|0.0907
|2.3048
|2.3048
|
|4.17
|4.1328
|12
|3200  Hz
|-
|-
|12
|12
|0.0808
|2.0525
|2.0525
|5.2
|3.31
|5.20864
|9.3
|4150  Hz
|-
|-
|13
|13
|0.0720
|1.8278
|1.8278
|6.6
|2.62
|6.56984
|7.4
|5300  Hz
|-
|-
|14
|14
|0.0641
|1.6277
|1.6277
|8.2
|2.08
|8.282
|5.9
|6700  Hz
|-
|-
|15
|15
|0.0571
|1.4495
|1.4495
|
|1.65
|10.44352
|4.7
|8250  Hz
|-
|-
|16
|16
|0.0508
|1.2908
|1.2908
|13
|1.31
|13.17248
|3.7
|11  kHz
|-
|-
|17
|17
|0.0453
|1.1495
|1.1495
|
|1.04
|16.60992
|2.9
|13  kHz
|-
|-
|18
|18
|0.0403
|1.0237
|1.0237
|21
|0.823
|20.9428
|2.3
|17  kHz
|-
|-
|19
|19
|0.0359
|0.9116
|0.9116
|
|0.653
|26.40728
|1.8
|21  kHz
|-
|-
|20
|20
|0.0320
|0.8118
|0.8118
|34
|0.518
|33.292
|1.5
|27  kHz
|-
|-
|21
|21
|0.0285
|0.7229
|0.7229
|
|0.41
|41.984
|1.2
|33  kHz
|-
|-
|22
|22
|0.0253
|0.6438
|0.6438
|52
|0.326
|52.9392
|0.92
|42  kHz
|-
|-
|23
|23
|0.0226
|0.5733
|0.5733
|
|0.258
|66.7808
|0.729
|53  kHz
|-
|-
|24
|24
|0.0201
|0.5106
|0.5106
|88
|0.205
|84.1976
|0.577
|68  kHz
|-
|-
|25
|25
|0.0179
|0.4547
|0.4547
|108
|0.162
|106.1736
|0.457
|85  kHz
|-
|-
|26
|26
|0.0159
|0.4049
|0.4049
|133
|0.129
|133.8568
|0.361
|107  kHz
|-
|-
|27
|27
|0.0142
|0.3606
|0.3606
|180
|0.102
|168.8216
|0.288
|130  kHz
|-
|-
|28
|28
|0.0126
|0.3211
|0.3211
|216
|0.081
|212.872
|0.226
|170  kHz
|-
|-
|29
|29
|0.0113
|0.2859
|0.2859
|
|0.0642
|268.4024
|0.182
|210  kHz
|-
|-
|30
|30
|0.0100
|0.2546
|0.2546
|352
|0.0509
|338.496
|0.142
|270  kHz
|-
|-
|31
|31
|0.0089
|0.2268
|0.2268
|
|0.0404
|426.728
|0.113
|340  kHz
|-
|-
|32
|32
|0.0080
|0.2019
|0.2019
|556
|0.032
|538.248
|0.091
|430  kHz
|-
|-
|33
|33
|0.0071
|0.1798
|0.1798
|663
|0.0254
|678.632
|0.072
|540  kHz
|-
|-
|34
|34
|0.0063
|0.1601
|0.1601
|862
|0.0201
|855.752
|0.056
|690  kHz
|-
|-
|35
|35
|0.0056
|0.1426
|0.1426
|1120
|0.016
|1079.12
|0.044
|870  kHz
|-
|-
|36
|36
|0.0050
|0.127
|0.1270
|0.0127
|1326
|1360
|0.035
|1100  kHz
|-
|-
|37
|37
|0.0045
|0.1131
|0.1131
|1810
|0.01
|1715
|0.0289
|1350  kHz
|-
|-
|38
|38
|0.0040
|0.1007
|0.1007
|2210
|0.00797
|2163
|0.0228
|1750  kHz
|-
|-
|39
|39
|0.0035
|0.0897
|0.0897
|2693
|0.00632
|2728
|0.0175
|2250  kHz
|-
|-
|40
|40
|0.0031
|0.0799
|0.0799
|3448
|0.00501
|3440
|0.0137
|2900  kHz
|}
|}


Revision as of 22:46, 12 June 2021

Wire gauges are typically denoted using the American Wire Gauge (AWG), also known as Brown and Sharpe Wire Guage.

Telephone/network wires are typically AWG 24 or 26. Household wiring is thicker and is typically AWG 12 or 14.

AWG's formula D(AWG)=0.005·92((36-AWG)/39) means that:

  • Every 6 gauge decrease doubles the wire diameter
  • Every 3 gauge decrease doubles the wire cross sectional area

For 00, 000, 0000 gauge wires, calculate them with negative values -1, -2, -3.

Gauge Table

The table below is for copper conductors. Listed is the maximum frequency for 100% skin depth, or when there is no skin effects.

AWG # Diameter (mm) Area (mm2) Resistance (Ω/1km) Max Current (A) 100% skin depth frequency
0000 (4/0) 11.684 107 0.16072 302 125 Hz
000 (3/0) 10.4049 85 0.202704 239 160 Hz
00 (2/0) 9.2658 67.4 0.255512 190 200 Hz
0 (1/0) 8.2515 53.5 0.322424 150 250 Hz
1 7.3481 42.4 0.406392 119 325 Hz
2 6.5437 33.6 0.512664 94 410 Hz
3 5.8273 26.7 0.64616 75 500 Hz
4 5.1894 21.2 0.81508 60 650 Hz
5 4.6213 16.8 1.027624 47 810 Hz
6 4.1154 13.3 1.295928 37 1100 Hz
7 3.6649 10.5 1.634096 30 1300 Hz
8 3.2636 8.37 2.060496 24 1650 Hz
9 2.9064 6.63 2.598088 19 2050 Hz
10 2.5882 5.26 3.276392 15 2600 Hz
11 2.3048 4.17 4.1328 12 3200 Hz
12 2.0525 3.31 5.20864 9.3 4150 Hz
13 1.8278 2.62 6.56984 7.4 5300 Hz
14 1.6277 2.08 8.282 5.9 6700 Hz
15 1.4495 1.65 10.44352 4.7 8250 Hz
16 1.2908 1.31 13.17248 3.7 11 kHz
17 1.1495 1.04 16.60992 2.9 13 kHz
18 1.0237 0.823 20.9428 2.3 17 kHz
19 0.9116 0.653 26.40728 1.8 21 kHz
20 0.8118 0.518 33.292 1.5 27 kHz
21 0.7229 0.41 41.984 1.2 33 kHz
22 0.6438 0.326 52.9392 0.92 42 kHz
23 0.5733 0.258 66.7808 0.729 53 kHz
24 0.5106 0.205 84.1976 0.577 68 kHz
25 0.4547 0.162 106.1736 0.457 85 kHz
26 0.4049 0.129 133.8568 0.361 107 kHz
27 0.3606 0.102 168.8216 0.288 130 kHz
28 0.3211 0.081 212.872 0.226 170 kHz
29 0.2859 0.0642 268.4024 0.182 210 kHz
30 0.2546 0.0509 338.496 0.142 270 kHz
31 0.2268 0.0404 426.728 0.113 340 kHz
32 0.2019 0.032 538.248 0.091 430 kHz
33 0.1798 0.0254 678.632 0.072 540 kHz
34 0.1601 0.0201 855.752 0.056 690 kHz
35 0.1426 0.016 1079.12 0.044 870 kHz
36 0.127 0.0127 1360 0.035 1100 kHz
37 0.1131 0.01 1715 0.0289 1350 kHz
38 0.1007 0.00797 2163 0.0228 1750 kHz
39 0.0897 0.00632 2728 0.0175 2250 kHz
40 0.0799 0.00501 3440 0.0137 2900 kHz

Max current ratings

AWG Typical Max. Current Load Ratings - Copper (amps)
Single Core Multicore
up to 3 cores 4 - 6 cores 7 - 24 cores 25 - 42 cores 43 and above
24 3.5 2 1.6 1.4 1.2 1.0
22 5.0 3 2.4 2.1 1.8 1.5
20 6.0 5 4.0 3.5 3.0 2.5
18 9.5 7 5.6 4.9 4.2 3.5
16 15 10 8.0 7.0 6.0 5.0
14 24 15 12 10 9.0 7.5
12 34 20 16 14 12 10
10 52 30 24 21 18 15
8 75 40 32 28 24 20
6 95 55 44 38 33 27
4 120 70 56 49 42 35
3 154 80 64 56 48 40
2 170 95 76 66 57 57
1 180 110 88 77 66 55

See Also

Recent Changes

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