British Standard Wire Gauge

Conductor Size


British Standard Wire Gauge Reference Table

British Standard Wire Gauge (SWG) Wire Diameter
(in) (mm)
0 0.324 8.23
1 0.3 7.62
2 0.276 7.01
3 0.252 6.40
4 0.232 5.89
5 0.212 5.39
6 0.192 4.88
7 0.176 4.47
8 0.16 4.06
9 0.144 3.66
10 0.128 3.25
11 0.116 2.95
12 0.104 2.64
13 0.092 2.34
14 0.08 2.03
15 0.072 1.83
16 0.064 1.63
17 0.056 1.42
18 0.048 1.22
19 0.04 1.02
20 0.036 0.91
21 0.032 0.81
22 0.028 0.71
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4 thoughts on “British Standard Wire Gauge”

  • Sarah Miller
    16/01/2020

    Another suggestion would be to include a section on the applications of different SWG sizes. For example, smaller SWG sizes are often used for delicate electronic components, while larger SWG sizes are used for power transmission cables. This would provide readers with a better understanding of how SWG sizing affects the performance and safety of electrical systems.

    Reply
  • Michael Jones
    16/01/2020

    Overall, this article is a valuable resource for anyone working with electrical wire and cable. It provides essential information on SWG sizing and can help ensure accurate and safe electrical installations.

    Reply
    • Jane Doe
      16/01/2020

      One suggestion for improvement would be to include a brief history of the SWG system and its relationship to other wire gauge systems, such as the American Wire Gauge (AWG). This would provide additional context for readers who are unfamiliar with the topic.

      Reply
  • John Smith:
    16/01/2020

    This article provides a clear and concise explanation of the British Standard Wire Gauge (SWG) system, making it accessible to both technical and non-technical readers. The table of SWG sizes and diameters is particularly useful for quick reference.

    Reply

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