# 24 AWG Wire

#### foxhenry

Joined Mar 27, 2009
15

24 AWG 7/32 tinned copper drain wire

7/32 is for what is it the number of wires or what?

sorry if the question seems a bit odd, just need to know.. thanks...

#### The Electrician

Joined Oct 9, 2007
2,751
It means that it's a bundle of 7 strands of 32 gauge wires; such a bundle has the same cross-sectional area as a single strand of 24 gauge.

#### foxhenry

Joined Mar 27, 2009
15
thank you... is there any link you can recommend for information like this things...

#### beenthere

Joined Apr 20, 2004
15,819
Wire gauges are easy to check as to diameter and ampacity. The number of strands is up to the manufacturer, and their spec for that particular wire is the source of information.

#### peranders

Joined May 21, 2007
88
I love AWG. What was the advantage of this "unit"? We from Europe are puzzzled.

#### StayatHomeElectronics

Joined Sep 25, 2008
1,020
There are a few good rules of thumb for the AWG on wikipedia.

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

I can freely admit that I did not know any of them.

I think the main benefit is that it seems to have been around since the 1800's and there is not much here that has been around that long.

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#### peranders

Joined May 21, 2007
88
The problem is that you can't measure AWG nor use it in formulas when calculating. It's very unpractical but I know that you use it over there so it's only for me to use AWGConvert in my iPhone

#### rspuzio

Joined Jan 19, 2009
77
> What was the advantage of this "unit"?

According to the chain mail people,

http://www.mailleartisans.org/articles/articledisplay.cgi?key=10945

The AWG system was developed in America to be used for electrical applications, and is still used for non-ferrous wire. (Ferrous means iron-based.) The gauge numbers are based on electrical resistance, which increases as the wire gets thinner. (Picture the electrons flowing through the wire as a bunch of people running down a hallway. If the wire/hallway gets thinner, it slows them down since there's not as much room for them to get through. That's what resistance is.) When the gauge number increases by 3, the higher (thinner) wire will have twice the resistance of the lower (thicker) wire. A general rule of thumb says that when the gauge goes up by 6, the wire diameter is halved. (So, for example, 22g would be roughly half as thick as 16g.)

#### peranders

Joined May 21, 2007
88
Interesting article but the big question is why? Advantage? I'll guess I never will have the answer here.