Contractors Unlimited

Electronic wire and cable

When designing control panels, marshalling panels, and patch panels it is often desireable to maximise the cross sectional area of the internal wiring being used in order to limit voltage drop etc. However, the maximum diameter that your panel terminal, be it Weidmuller, Phoenix or whatever, can take places a restriction on your choice. Couple this with some cable suppliers specifying their cables in American Wire Gauge (AWG) and it has all the ingredients of a looming disaster.
The table below should make cable selection easier:

Solid Bare Copper Wire
AWGNominal
Diam
(mm)
Cross
Section
(mm2)
102.65.23
112.34.155
122.053.29
131.832.63
141.632.07
151.451.651
161.291.3
171.151.039
181.020.816
190.9120.653
200.8130.514
210.7240.412
220.6430.322
230.5740.259
240.5110.203
250.4550.163
260.4040.127
270.3610.102
280.320.08
290.2870.064
300.2540.051
310.2260.04
320.2030.032
330.180.025
340.160.02
350.1420.016
360.1270.013
370.1140.01
380.1020.008
390.0890.006
400.0790.005
Stranded Tinned Copper Wire
AWGStranding
 
No/AWG
Nominal
Diam
(mm)
Cross
Section
(mm2)
127/202.443.61
1219/252.363.07
1265/302.413.27
147/221.852.26
1419/261.851.93
1442/301.852.06
167/241.521.42
1619/291.471.216
1665/341.51.3
187/261.220.891
1819/301.240.957
1842/341.20.819
1865/361.20.845
207/280.890.504
2019/320.940.612
2042/360.9140.533
227/300.7620.352
2219/340.7870.38
247/320.610.226
2419/360.610.239
2442/400.5840.201
267/340.4830.14
2619/380.5080.153
287/360.3810.071
2819/400.4060.093
307/380.3050.056


IEE On-site Guide
IEE On-site Guide; BS 7671 : 2008 IEE Wiring Regulations 17th Edition
 
Electrician's Calculations Manual
Electrician's Calculations Manual
 

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