Relationship between SWG and AWG - Electronic Circuits Projects Diagrams Free

Boncuk · 18th July 2008, 01:45 AM

Hi,

is there any relationship between those two dimensions and if so, what is the difference concerning calculating for each one?

The easier way used in Europe is just naming wires by either diameter or cross section.

Hans

Sceadwian · 18th July 2008, 05:22 AM

http://en.wikipedia.org/wiki/Standard_wire_gauge

http://en.wikipedia.org/wiki/American_Wire_Gauge

Boncuk · 18th July 2008, 01:57 PM

Thanks for the links.

There is only a very small relationship between SWG and AWG, but none of the gages is is manufactured by industry.

E.g. to find out the equivalent value of 25 SWG wire in mm the table contains numbers for SWG 24 and 26. Using the arithmetic average of 0.559mm (SWG 24) and 0.457mm (SWG 26) this would mean a wire diameter of 0.508mm.

Who produces that wire?

Going by the WG numbers the only thing one can imagine, that a low number indicates a big diameter decreasing with increasing WG number.

Also there is a sudden stop at SWG 50 which equals 0.0254mm. I have worked with wire of 0.006mm diameter (thinner than human hair). What is the equivalent SWG number for it?

Not quite logical, is it?

Hans

Sceadwian · 18th July 2008, 03:30 PM

Not surprising it doesn't have an equivalent number, it's just not practical when you get that small. At that point you should be specifying the circular diameter or cross sectional area of the wire explicitly in it's native measure. AWG SWG etc.. are only basically useful for common household/electronic wiring. Once you get really small or really large the standards are only guidelines as you need to take into account manufacturing tolerances.

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18th July 2008, 01:45 AM	(permalink)
Boncuk	Relationship between SWG and AWG Hi, is there any relationship between those two dimensions and if so, what is the difference concerning calculating for each one? The easier way used in Europe is just naming wires by either diameter or cross section. Hans

18th July 2008, 05:22 AM	(permalink)
Sceadwian	http://en.wikipedia.org/wiki/Standard_wire_gauge http://en.wikipedia.org/wiki/American_Wire_Gauge __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

18th July 2008, 01:57 PM	(permalink)
Boncuk	Relationship between SWG and AWG Thanks for the links. There is only a very small relationship between SWG and AWG, but none of the gages is is manufactured by industry. E.g. to find out the equivalent value of 25 SWG wire in mm the table contains numbers for SWG 24 and 26. Using the arithmetic average of 0.559mm (SWG 24) and 0.457mm (SWG 26) this would mean a wire diameter of 0.508mm. Who produces that wire? Going by the WG numbers the only thing one can imagine, that a low number indicates a big diameter decreasing with increasing WG number. Also there is a sudden stop at SWG 50 which equals 0.0254mm. I have worked with wire of 0.006mm diameter (thinner than human hair). What is the equivalent SWG number for it? Not quite logical, is it? Hans Last edited by Boncuk; 18th July 2008 at 01:58 PM.

18th July 2008, 03:30 PM	(permalink)
Sceadwian	Not surprising it doesn't have an equivalent number, it's just not practical when you get that small. At that point you should be specifying the circular diameter or cross sectional area of the wire explicitly in it's native measure. AWG SWG etc.. are only basically useful for common household/electronic wiring. Once you get really small or really large the standards are only guidelines as you need to take into account manufacturing tolerances. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."