What is SWG (Standard Wire Gauge)
Standard Wire Gauge (often abbreviated to SWG) is a unit for denoting wire size given by BS 3737:1964 (now withdrawn). It is also known as the Imperial Wire Gauge or British Standard Gauge. The use of SWG sizes has fallen greatly in popularity, but they are still used as a measure of thickness in electrical wires. Cross-sectional area in square millimeters is now the more usual size measurement for wires used in electrical installation cables. The current British Standard for metallic materials such as wire and sheet is BS 6722:1986, which is a solely metric standard. In this article, we will discuss the copper fuse wire size chart in swg.
Standard Wire Gauge (often abbreviated to SWG) is a unit for denoting wire size given by BS 3737:1964 (now withdrawn). It is also known as the Imperial Wire Gauge or British Standard Gauge. The use of SWG sizes has fallen greatly in popularity, but they are still used as a measure of thickness in electrical wires. Cross-sectional area in square millimeters is now the more usual size measurement for wires used in electrical installation cables. The current British Standard for metallic materials such as wire and sheet is BS 6722:1986, which is a solely metric standard. In this article, we will discuss the copper fuse wire size chart in swg.
Copper fuse wire size chart in swg
Following “Copper fuse wire size chart in swg” is used to know the current carrying capacity of copper wires in normal cases and at what current fuse(fusing current) will blow out. as we know during the short circuit and over-current fault these currents increased to higher than their normal flowing current as soon as the fusing current reached the fuse itself melted and disconnect the circuit. The proper size of the copper fuse is essential to protect the transformer.
S.W.G | Diameter in inches | Current rating of fuse in amperes | Approximate fusing current |
40 | 0.0048 | 1.5 | 3 |
39 | 1.0052 | 2.5 | 4 |
38 | 0.006 | 3 | 5 |
37 | 0.0068 | 3.5 | 6 |
36 | 0.0076 | 4.5 | 7 |
35 | 0.0084 | 5 | 8 |
34 | 0.0092 | 5.5 | 9 |
33 | 0.0101 | 6 | 10 |
32 | 0.0108 | 7 | 11 |
31 | 0.0116 | 8 | 12 |
30 | 0.0124 | 8.5 | 13 |
29 | 0.0136 | 10 | 16 |
28 | 0.0148 | 12 | 18 |
27 | 0.0164 | 13 | 23 |
26 | 0.018 | 14 | 28 |
25 | 0.020 | 15 | 30 |
24 | 0.022 | 17 | 33 |
23 | 0.024 | 20 | 38 |
22 | 0.028 | 24 | 48 |
21 | 0.032 | 29 | 58 |
20 | 0.036 | 34 | 70 |
19 | 0.04 | 38 | 81 |
18 | 0.048 | 45 | 106 |
17 | 0.056 | 65 | 135 |
16 | 0.064 | 73 | 166 |
15 | 0.072 | 78 | 197 |
14 | 0.08 | 102 | 230 |
13 | 0.092 | 130 | 295 |
What is Tinned copper fuse wire
Copper is the second most conductive metal in the world behind silver, but due to its abundance and how easy it is to work with, copper is considered the standard in electrical work. Copper is also the standard by which all other conductive metals are judged. In 1913, the International Electro-Technical Commission set its conductivity at 100 percent of the International Annealed Copper Standard (IACS). The metal resists galvanic corrosion – the gradual deterioration of one metal in electrical contact with another metal – and is durable enough that it avoids stretching, nicks and breaks. However, copper is not invincible.
Copper wires are some of the most commonly used components in electrical systems as tinned copper fuse wire. Despite all its versatility and its relatively low cost, regular copper wire is not perfect for every situation. In certain conditions, the copper wire must be specially treated to remain effective.
Tinning Benefits of Copper fuse wire
When you apply a thin coating of tin to bare copper wire, either by dipping the copper in molten metal or by using an electric current to bind the tin to the copper, you create what is known as tinned copper wire. Tinned copper wire is just as conductive as bare copper wire, but the thin layer of tin helps the wire resist corrosion. Tinned copper wire can last up to 10 times longer than its non-tinned counterpart, and because solder is composed primarily of tin, tinned wire is incredibly easy to solder. Tinned copper wire is particularly useful in industrial cranes, subways, and marine projects where the tin coat makes the wire more resistant to water.