To calculate fuse size for any transformer we need to know the maximum current carrying capacity of that transformer. For example, with a gauge value of 1, an SWG wire would have a diameter of 0.3 inches while an AWG wire would have a diameter of 0.2893. In general, an SWG wire would be bigger than an AWG wire of the same gauge. When it comes to the actual cable sizes, the two are actually not equivalent in size. In comparison, AWG stands for the American Wire Gauge and it originates from North America, which is composed of the US and Canada. SWG was derived from the British Standard Wire Gauge, dropping the British part eventually. The main difference between SWG and AWG is where they originated from. A good example of this is the SWG and AWG standards. The problem with standards is that they are not compatible with each other. ![]() So, Wire size standards are important as it gives an easy-to-remember numerical chart of commonly used wire sizes. Difference Between SWG and AWGĪs we know the size of the fuse wire come in mm2 which is always in fraction due to which it is not easy to remember fuse size in mm2. Its derivational history has also effectively circumscribed the usage of the standard to mainly Britain and its surrounding areas. It has been used as the only measuring standard in the UK since 1884. This wire gauge standard comes from Britain and is frequently referred to as the British Wire Gauge system or the Imperial Wire Gauge standard. The full form of SWG is the Standard Wire Gauge system. of fuse wire from following the 3 Phase transformer fusing chart – SWG using the above calculator first get the current rating of the transformer then select SWG no. of copper wire/ aluminum/iron wire/ tin wire has to be used to protect the transformer given. ![]() ![]() Once the rated current of the transformer is known and using the following SWG chart we can find no.
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