Conduit Fill Capacity Table
cable outside diameter mm (in)
inside
inside
diam.
diam.
3.3
inch
mm
(0.13)
4.6
(0.18)
5.6
(0.22)
6.1
(0.24)
7.4
(0.29)
7.9
(0.31)
9.4
(0.34)
13.5
(0.53)
15.8
(0.62)
17.8
(0.70)
1/2
.622
16
3/4
.824
21
1.049
27
1-1/4
1.380
35
16
14
12
10
1-1/2
1.610
41
20
18
16
15
2.067
53
30
26
22
20
14
12
2-1/2
2.469
63
45
40
36
30
17
14
12
3.068
78
70
60
50
40
20
20
17
3-1/2
3.548
91
MAX
MAX
MAX
MAX
MAX
MAX
22
12
4.026
103
MAX
MAX
MAX
MAX
MAX
MAX
30
14
12
trade
size
typical 2-pair CAT3 cable
typical 4-pair CAT3 cable
typical 4-pair CAT5E cable
typical 4-pair CAT6 (without divider) cable
typical 4-pair CAT6 (with divider) or 4-pair ScTP cable
typical 12-pair CAT3 unshielded cable
typical 25-pair CAT3 unshielded cable
typical 50-pair CAT3 unshielded cable
typical 50-pair CAT3 shielded ARMM cable
typical 100-pair CAT3 unshielded cable
Sources: BICSI TDMM, General Cable, Superior Essex
AWG American Wire Gauge to mm2
Short Table:
AWG
mm2
AWG
mm2
AWG
mm2
AWG
mm2
30
0.05
18
0.75
16
4/0
120
28
0.08
17
1.0
25
300MCM
150
26
0.14
16
1.5
35
350MCM
185
24
0.25
14
2.5
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
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
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
0,0078
2190
0,0040
ohm/1000 feet
37
0,11
0,0045
0,0095
1810
36
0,13
0.005
0,013
1300
35
0,14
0,0056
0,015
1120
34
0,16
0.0063
0,020
844
33
0,18
0,0071
0,026
676
445
280
AWG Diameter Diameter Square Resistance Resistance
mm
inch
32
0,20
0.008
30
0,25
28
mm2
ohm/km
ohm/1000feet
0,031
547
174
0.01
0,049
351
113
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
3.25
0.128
8..296
2.2
0.67
4.115
0.165
13.298
1.5
0.47
5.189
0.2043
21.15
0.8
0.24
6.543
0.2576
33.62
0.5
0.15
7.348
0.2893
42.41
0.4
0.12
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
Metric Gauge
Diameter
mm
Square
mm2
Resistance
ohm/m
0,5
0,20
0,0838
0,6
0,28
0,0582
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
10
16
10
13
14
15
18
12
20
25
10
25
30
35
40
45
55
60
70
80
95
Amperage for Power Extension Cords
(always uncoil the cord completely under oreration)
14 / 3 AWG Cable
Length
Amperage
50'
15 A
100'
13 A
150'
8A
200'
6A
250'
5A
300'
4A
12 / 3 AWG Cable
Length
Amperage
50'
15 A
100'
15 A
150'
13 A
200'
10 A
250'
7A
300'
6A
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
125 A
C-Way (50')
90 A
C-Way (50')
70 A
Joy&Cabtire (25'&50')
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 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
3A
3A
4A
28
4A
4A
6A
26
5A
5A
7A
24
7A
7A
10 A
22
9A
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
70 A
75 A
100 A
100 A
105 A
135 A
135 A
145 A
180 A
180 A
200 A
240 A
