AWG American Wire Gauge to mm2



Short Table

AWG mm2   AWG mm2   AWG mm2   AWG mm2
30 0.05 18 0.75 6 16 4/0 120
28 0.08 17 1.0 4 25 300MCM 150
26 0.14 16 1.5 2 35 350MCM 185
24 0.25 14 2.5 1 50 500MCM 240
22 0.34 12 4.0 1/0 55 600MCM 300
21 0.38 10 6.0 2/0 70 750MCM 400
20 0.50 8 10 3/0 95 1000MCM 500




AWG American Wire Gauge / Diameter / Resistance

Used in the United States and other countries as a standard method of denoting wire diameter. The higher the number the thinner the wire. Thicker wire is generally capable of carrying larger amount of current over greater distances with less loss (though there are other things that cause current loss in wire). Sometimes the loss of cables is rated in Ohms per one thousand feet and for a particular type of wire the lower gauges (larger wires) have less resistance to current flow. (Sweetwater Archive)

See: Maximum current load



AWG American Wire Gauge Table

AWG  Diameter  Diameter  Square  Resistance  Resistance 
  mm  inch    mm2  ohm/km  ohm/1000 feet 
46 0,04   0,0013 13700  
44 0,05   0,0020 8750  
42 0,06   0,0028 6070  
41 0,07   0,0039 4460  
40 0,08   0,0050 3420  
39 0,09   0,0064 2700  
38 0,10 0,0040 0,0078 2190  
37 0,11 0,0045 0,0095 1810  
36 0,13 0.005 0,013 1300 445
35 0,14 0,0056 0,015 1120  
34 0,16 0.0063 0,020 844 280
33 0,18 0,0071 0,026 676  
AWG  Diameter  Diameter  Square  Resistance  Resistance 
  mm  inch    mm2  ohm/km  ohm/1000feet 
32 0,20 0.008 0,031 547 174
30 0,25 0.01 0,049 351 113
28 0,33 0.013 0,08 232.0 70.8
27 0,36 0.018 0,096 178 54.4
26 0,41 0.016 0,13 137 43.6
25 0,45 0,0179 0,16 108  
24 0,51 0.02 0,20 87,5 27.3
22 0,64 0.025 0,33 51,7 16.8
20 0,81 0.032 0,50 34,1 10.5
18 1,02 0.04 0,82 21,9 6.6
16 1,29 0.051 1,3 13,0 4.2
14 1,63 0.064 2,0 8,54 2.6
AWG  Diameter  Diameter  Square  Resistance  Resistance 
  mm  inch    mm2  ohm/km  ohm/1000feet 
13 1,80 0,0720 2,6 6,76  
12 2,05 0.081 3,3 5.4 1.7
10 2.59 0.102 5.26 3.4 1.0
8 3.25 0.128 8..296 2.2 0.67
6 4.115 0.165 13.298 1.5 0.47
4 5.189 0.2043 21.15 0.8 0.24
2 6.543 0.2576 33.62 0.5 0.15
1 7.348 0.2893 42.41 0.4 0.12
0 8.252 0.325 53.49 0.31 0.096
00 9.266 0.365 67.43 0.25 0.077
000 10.40 0.4096 85.01 0.2 0.062
0000 11.684 0.460 107.219 0.16 0.049




Conductor Area versus AWG

Conductor Area (mm2) AWG Conductor Area (mm2) AWG Conductor Area (mm2) AWG Conductor Area (mm2) AWG
135.10 5/0 10.60 7 0.823 18 0.0646 29
107.20 4/0 8.35 8 0.653 19 0.0503 30
85.00 3/0 6.62 9 0.519 20 0.0400 31
67.50 2/0 5.27 10 0.412 21 0.0320 32
53.40 0 4.15 11 0.325 22 0.0252 33
42.40 1 3.31 12 0.259 23 0.0200 34
33.60 2 2.63 13 0.205 24 0.0161 35
26.70 3 2.08 14 0.163 25 0.0123 36
21.20 4 1.65 15 0.128 26 0.0100 37
16.80 5 1.31 16 0.102 27 0.00795 38
13.30 6 1.04 17 0.0804 28 0.00632 39




Metric Gauge

Metric Gauge  Diameter  Square  Resistance 
  mm    mm2  ohm/m 
5 0,5 0,20 0,0838
6 0,6 0,28 0,0582
8 0,8 0,5 0,0328
10 1,0 0,8 0,0210
14 1,4 1,54 0,0107
16 1,6 2,0 0,00819
20 2,0 3,14 0,00524
25 2,5 4,91 0,00335




US National Electrical Code

maximum Amperage
AWG Wire Size Two Current Carrying Conductors Three Current Carrying Conductors
  Ampere Ampere
18 7 10
16 10 13
14 15 18
12 20 25
10 25 30
8 35 40
6 45 55
4 60 70
2 80 95




Amperage for Power Extension Cords (US)

(always uncoil the cord completely under oreration)
  
14 / 3 AWG Cable
Length Amperage
50' 15 A
100' 13 A
150' 8 A
200' 6 A
250' 5 A
300' 4 A
12 / 3 AWG Cable
Length Amperage
50' 15 A
100' 15 A
150' 13 A
200' 10 A
250' 7 A
300' 6 A
10 / 3 AWG Cable
Length Amperage
50' 15 A
100' 15 A
150' 15 A
200' 15 A
250' 13 A
300' 10 A




AWG / Amperage and Connectors

AWG max. Amperage Connector
0000 (4/0) 300 A CamLock
000 (3/0) 260 A CamLock
00 (2/0) 225 A CamLock
0 (1/0) 195 A CamLock
2 125 A C-Way (50')
4 90 A C-Way (50')
6 70 A Joy&Cabtire (25'&50')
8 50 A Joy&Cabtire (25'&50')
10 30 A Joy&Cabtire (25'&50')
12 20 A A.C. Wire (25'&50')
14 15 A A.C. Wire (25'&50')
16 10 A A.C. Wire




Amperage and Insulation Heat

Amperage that is needed to heat up the insulation to a certain temperature (Copper Cable / different Insulation Materials) in free air (30C)
AWG POLYPROPYLENE, POLYETHYLENE,
(high density) at 90C
PVC (irradiated), NYLON at 105C KAPTON, TEFLON, SILICONE at 200C
30 3 A 3 A 4 A
28 4 A 4 A 6 A
26 5 A 5 A 7 A
24 7 A 7 A 10 A
22 9 A 10 A 13 A
20 12 A 13 A 17 A
18 17 A 18 A 24 A
16 22 A 24 A 32 A
14 30 A 33 A 45 A
12 40 A 45 A 55 A
10 55 A 58 A 75 A
8 70 A 75 A 100 A
6 100 A 105 A 135 A
4 135 A 145 A 180 A
2 180 A 200 A 240 A