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An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 2:52 PM

Is there an easy way to remember which thickness is a 12 AWG or a 16 AWG or any other?

I can't understand the way the series goes.

http://www.engineeringtoolbox.com/awg-wire-gauge-d_731.html

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#1

Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 3:08 PM

The smaller the number the thicker the wire or sheet metal.Is that what you mean?

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#2
In reply to #1

Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 3:16 PM

Yes, but for how much?

1/16"? 1/32"?

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#5
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 4:03 PM

for that you just need to rely on your memory.after many years in industry I can tell by looking, but I couldn't do that at the start. I am sure that there is something out there but... Maybe contact a manufacturer for a spec sheet,be specific on what you want and I imagine they will have something.they need a guide for their equipment to make the correct thicknesses so they must have something. I'll look around,if I find something you will know.

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#8
In reply to #5

Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 9:13 PM

If you can tell by looking then you are my new god.

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#3

Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 3:54 PM

I don't think there is any easy way to remember metal gage thicknesses because they are not rational. Here is a brief note on the history of the metal gages and how they came about.

At one time, every manufacturer had a different definition of gage. Even today, Britain has different standards than U.S.A. and even today, steel, stainless steel and aluminum have different standards as evidenced here.

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#4

Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 3:55 PM

To my knowledge: No.

You have the chart for conversion so just keep that handy. I am unaware of any standard incremental change between gauges.

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#6

Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 4:21 PM

I don't think any one really understands gauge sizing. There are gauge sizing for a lot of different materials. From wire size to stoppers for bottles. Standards were set for easy of use. More than likely set by the biggest manufacture if the item at the time a standard set. So I would not dwell on the wire size and try to make since of it. Do as the most of us do is go to a chart.

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#7
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 9:11 PM

I know, I know. I just thought that would make me look more experienced than I really am.

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#9
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/20/2009 11:09 PM

Hey Gussosa, you're back! I used to be able to tell the gauge when I was working with it daily. Now I rely on a gauge plate. These are available from a number of places. I bought mine from the wholesaler supplier. I have one each for drill sizes, screw sizes and wire sizes. Basically its a go/ no go type feeler /sizer plate. They are not expensive. Especially the plastic ones since they do not last as long. good ones are metal and cost more.

I was in a motor rewid shop recentlty and every work bench had one of these lying around. When you have so many similar magnet wires around nobody can tell at a glance what the size is. th efeler gauge is the way to go. For wire sizing the common one is a round 3" disk with holes around the edges. The hole is over size to make it easy to stick the wire in. A slot is cut from hole out to rim. The slot is precision cut to the exact thickness of each wire gauge. If in doubt try a feeler gauge or recheck a wire with a micrometer. Once you know the gaege is accurate you can check sizing in seconds. Most designers I know have such things in their desk drawer.

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#18
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:11 PM

Hi Elnav, good to see you too.

I work with steel sheets, not wires, but the gauges used are the same. What I usually do is measuring with a caliper and then check at the table at Engineering Toolbox.

My wishes are shallow in this occasion, I just want to make me look like I am experienced enough to know at eye sight which gauge it is or at least skipping the table.

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#10

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 12:05 AM

This is for steel.

GAUGE (ga) - THICKNESS (inches)
8 - .1644
9 - .1494
10 - .1345
11 - .1196
12 - .1046
14 - .0747
16 - .0598
18 - .0478
20 - .0359
22 - .0299
24 - .0239
Still working out wire.

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#11

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 12:14 AM

got this for wire,don't particularly like it but it works.good luck

S.W.G.

Wire Number

A.W.G. or B&S

A.W.G. Metric

(Inches) (Gauge) (Inches) (MM)
0.5000000000 (7/0)...................................
0.464000000 (6/0)0.580000............
0.43200000 (5/0)0.516500............
0.4000000 (4/0)0.46000011,684
0.372000 (3/0)0.40964210,404
0.34800 (2/0)0.3647969,266
0.3240 (1/0)0.3248618,252
0.30010.2892977,348
0.27620.2576276,543
0.25230.2294235,827
0.23240.20435,189
0.212050.18194,621
0.192060.16204,115
0.176070.14433,665
0.160080.12853,264
0.144090.11442,906
0.1280100.10192,588
0.1160110.09072,304
0.1040120.08082,052

S.W.G.

Wire Number

A.W.G. or B&S

A.W.G. Metric

0.0920130.07201,829
0.0800140.06411,628
0.0720150.05711,450
0.0640160.05081,291
0.0560170.04531,150
0.0480180.04031,024
0.0400190.03590,9119
0.0360200.03200,8128
0.0320210.02850,7239
0.0280220.02530,6426
0.0240230.02260,5740
0.0220240.02010,5106
0.0200250.01790,4547
0.0180260.01590,4038
0.0164270.01420,3606
0.0148280.01260,3200
0.0136290.01130,2870
0.0124300.01000,2540
0.0116310.00890,2261
0.0108320.00800,2032
0.0100330.00710,1803

S.W.G.

Wire Number

A.W.G. or B&S

A.W.G. Metric

0.0092340.00630,1601
0.0084350.00560,1422
0.0076360.00500,1270
0.0068370.00450,1143
0.0060380.00400,1016
0.0052390.00350,0889
0.0048400.00310,0787
0.0044410.00280,0711
0.0040420.00250,0635
0.0036430.00220,0559
0.0032440.00200,0508
0.0028450.00180,0457
0.0024460.00160,0406
0.0020470.00140,0350
0.0016480.00120.0305
0.0012490.00110,0279
0.0010500.00100,0254
510.000880,0224
520.000780,0198
530.000700,0178
540.000620,0158
550.000550,0140
560.000490,0124

AWG= American Wire Gauge

B&S= Brown & Sharpe

SWG= Imperial Standard Wire Gauge-(British legal standard)

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#12

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 3:07 AM

"Never memorize something that you can look up."
— Albert Einstein

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#13

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 4:16 AM

Hello gussosa:

How are you?....................You could type it into your phone message? That is what I do. And use it as quick reminder. Type say, the first ten of each gauge you usually use.

Take care.........................

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#20
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:13 PM

I would need a new cell phone first for doing that. The current one wouldn't let me enter even the first three.

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#14

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 9:47 AM

Buy one of these from http://www.silversupplies.com/catalog/tools/measuring/index.shtml for $6.75 US, and hang it on the wall by your desk.

American standard for gauging wire and sheet sizes from 0-36 gauge. Decimal equivalents are provided on the reverse side. Made from heavy gauge hardened and tempered tool steel. 3 1/4" diameter. Made in USA.

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#16
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 12:24 PM

Thanks Eelectrician, that't the gage I was referring to. Gussosa if you look there is a Ga size engraved on one side. Flip the gage and the dimension is engraved on the other side. So now you can ascertain the actual gage and also get the decimal equivalent I have seen similar gauges for steel sheet stock etc. That is about as easy as it gets.

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#17
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:06 PM

That's a really fine piece of tool. I will check if it is available locally.

The only difficulty would be to keep strange hands out of it.

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#19
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:13 PM

Yes, watch for strange hands. Also, be sure to keep it away from kids or you will find it bent completely out of shape after being thrown at trees to simulate a ninja star.

If you have trouble locating one locally then the website will ship it to you. The price is not bad even with shipping. I have seen them priced at $20 or more.

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#21
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:19 PM

Fortunately I do have some ninja stars at home. I worry more with know-all customers trying to force the feeler in the gauge they think correct.

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#22
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:27 PM

True, if they want it to be 14 gauge badly enough, then I am sure they can make it fit.

I have also encountered some wires that I was not 100% sure about and found that they did not fit properly in any hole due to poor manufacturing or flex/swell with age. Still, this tool belongs at every sales counter and in any good great machinist's toolbox.

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#23
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 1:53 PM

Gussosa wrote: I worry more with know-all customers trying to force the feeler in the gauge they think correct.

REPLY

Surely you don't allow your customers to get that deep into your own pocket?

Just give them a swat if they try.

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#25
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 3:53 PM

Hahahaha. Ok, it's just that is so hard to say no when they are buying thousands of dollars (or even millions) in equipment. I will have to go back to childhood and be severe: MY TOYS, MY RULES.

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#34
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 12:19 PM

Make sure you get one for steel. Jewelry metal has different thickness for its gauges. A piece of 20ga sterling silver is a different thickness than 20ga steel.

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#24
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 3:23 PM

the price alas is too good to be true I see it is $37. rats!

the same can be had for $32, alas they only ship global express so double it. There's a pocket version for $8.95 as well, both at the bottom of the page here http://www.monsterslayer.com/Pages/MeasureMark/MeasureMark.aspx

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#26
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 4:45 PM

Sorry for the careless mistake. The item above the wire gauge on the website is $6.75

Thanks for the correction.

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#28
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 7:32 PM

It's a funny thing - I've been working with silver but also bought some copper sheet to check out the gauges and rough out some prototypes. The same gauge was used (American Standard) but the copper was definitely heavier than the silver. Maybe a manufacturing thing? Wondered if there is much variation expected with other metals.

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#33
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 9:12 AM

Your result is very counter intuitive. I would expect the silver (AM = 108) to be about 65% heavier than the copper (AM = 64) if you have the same physical dimensions.

This discrepancy probably boils down to the manufacturers cheating their tolerances a little for prophet. The silver is probably stamped to the lowest end of the tolerance window so they can sell metal for the same price while the copper is probably kept at mean or higher to avoid potential lawsuits if the copper fails as a conductor in circuitry, but even with this considered I would be surprised to find the copper to be heavier than the silver.

I assume that the metals that you are working with are more than 99% pure since you are working with jewelery?

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#37
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 3:01 PM

ah, my mistake.. I used the word "heavier" to mean thickness rather than weight (DOH) I didn't weigh them in making this judgement, and used the wrong word. Both sterling (.925 pure) and fine (.999 pure) sheet were thinner than the copper sheet of the same labeled gauge. I feel pretty certain that the silver was exactly to gauge (it's expensive and people do check these things: most jewelers working with lots of different gauges of sheet would be checking with calipers routinely).

The copper may have been manufactured more 'generously' because it was intended for other applications. As you say, avoid the lawsuits. This was the first time I ordered sheet to work with, so I thought to get a working appraisal of the neccessary thickness by checking out the copper first... not as good a plan as I thought.

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#38
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 3:08 PM

It wouldn't surprise me if the copper was out of spec for any number of reasons. It's nice to know that the silver is true to standards though.

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#29
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 8:09 PM

Hello EElectrician,

I am looking at this site now. And think I have found what has to be the most arty and pretty 'tool' I have ever seen:

Looks like a slice through some exotic sea world crustacean?

It is a great site, thanks.

Take care................

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#32
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 8:52 AM

This looks like a tool to measure gems. I would not be at all surprised if somewhere someone has made a pendant or pair of ear rings based on the shape of that tool.

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#36
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 1:51 PM

Hello EElectrician:

It is a GEM tool.

But no ref' to size. I would imagine a hole drilled in it and a chain attached and it would look great! Almost tempted to get a dozen for Pressies!

Take care...........................

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#15

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 11:15 AM

Someone told me once that a shotgun gauge was set by the size of a ball that would fit in the barrel in fractions of a pound of lead.

For example a 16 gauge shotgun would fit a ball that is one ounce lead (1/16 th of a pound).

A 12 gauge is bigger and fit a ball that was 1/12 pound of lead.

I don't know how that relates to metal gauge but it may jog someone else's memory. there may be a similar simple reciprocal relationship that started it all.

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#27

Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 7:16 PM

0.3248*exp(-0.1159*gauge)=wire diameter(inch)

This formula works for any gauge from (0 to 40) or larger. Note for 00 gauge enter -1, for 000
enter -2 and 0000 -3.

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#30
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/21/2009 9:29 PM

Looking for this formulae , anything for SWG ?

GA to you

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#31
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 1:40 AM

SWG is piecewise not linear so there is no simple formula.

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#35
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 1:41 PM

Hello Chazl,

A GA to you for the Formulae. I thought I had given you one 24 hours ago sorry.

Take care..............

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#39

Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 3:40 PM

Sheet metal gauges are based on Ounces per Square Foot not thicknesses.

Therefore the thickness depends on type of metal.

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#40
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 4:24 PM

this statement can not be true in the USA for jewelry metals.

I have bought sheets of sterling, gold (14 caret),gold fill, and German silver(nickel/zinc/copper blend) plus brass and copper all in 26 gauge. All were the same thickness. they were not the same weight per square foot.

I have posted earlier that steel and jewelry metals use different gauge systems. I have bought these metals from multiple sources over the years.

I used to make pinch dies for cutting out shapes. Thickness of metal is critical to the working of the dies.

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#42
In reply to #40

Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 5:18 PM

SilvCrow,

Yes your are correct. In the USA, the Brown and Sharpe Gage, also called the American Wire Gage, is used for most nonferrous sheet metal, including aluminum, brass, German silver, magnesium, and phosphor bronze sheet. Zinc has a gage of it's own.

ChazL

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#41
In reply to #39

Re: An Easy Way to Remember Sheet / Wire Gauges

01/22/2009 5:13 PM

Well, at least this is something to investigate.

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#45
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/23/2009 1:33 PM

Hello gussosa:

How are you?.........................

You know you have mentioned about trying to seem or look more professional in your job. First find a new package you can use on your cad. Apropos your first question some months ago.Your drawings are tidy and neat but, do not have that 'X' Factor for me? You know I am being honest and not nasty.

I am sure you have a mic' why not walk around with it in your pocket. That would shout professionalism to me. But then I am easily pleased!

Another way, is to check out your suppliers, they may have a gadget or something like a 'key-ring' which they may have made up and give out to their customers .......like you? If not get some samples and make your own 'key-ring' of the wire thickness' you would usually use?

Take care my friend......................

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#46
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Re: An Easy Way to Remember Sheet / Wire Gauges

01/23/2009 8:33 PM

I am about to switch jobs. I was offered one in the meatpacking industry and it is almost sure I will get it.

However, in the long run I will still work in the grain industry. I guess in ten or twenty years I will be designing both grain processing facilities and slaughterhouses/meatpacking facilities.

I don't know if you have seen one of my old threads, when I complain about how much customers and bosses expect from me, and I always have to explain to them that computer networking, CRM programming, concrete construction, chemical engineering, etc, have nothing to do with what I studied.

I lose points each time someone gets me in something I don't know. People forget the times you saved their asses, but always remember the times you failed.

So, I am polishing my skills and acquiring new ones, but as appearance is so important I also want to take the shortcut to look like I know much more than I really do, hoping that will keep their mouths shut.

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#48
In reply to #46

Re: An Easy Way to Remember Sheet / Wire Gauges

01/23/2009 11:20 PM

Hello gussosa:

Well that is a surprise! I wish you luck in whatever you try.

I know exactly what you mean about people forgetting the favours etc. But, there will always be bullies and 'users'. Those people are often in turn used by the firm they work for. Underneath all that bravado is a scared little boy. But, they do not want others to see them that way so start putting an act on. After a few years it becomes a way of life. And by working to the act they feel they have to put on, they in turn put more pressure on themselves.

If you don't think the boss/s see through that I think you are mistaken. Don't forget, the boss/s got to where they are by some means, not all fair. They just happen to be in the right place at the right moment to get offered that job as supervisor then, manager. If they are in a small firm, they can sometimes interview applicants and weed out any potential threat to their superiority. But that will work for a pretty short time, before the overall boss tweaks and show him the door.

I always put more pressure on myself than any boss could. I managed to learn skills and run a section with twenty people in, and often times that stretched to 35 across the factory floor, and, when the boss was ill, for some reason, I would be called to the phone and asked to look after the factory for a couple of weeks, whatever.

I was never taught those skills. People skills I suppose you might call them. I was never a bully boss, and always took people into my confidence and tried to make the people who were good at the job, felt I cared, which I did. And they knew and I knew who I could gather round when the going got tough and a deadline had to be met. Maybe it was my personal one to one skill that made my boss, the owner, and the employer of 110 people, turn to me when he could not be there or was on holiday? I don't know. It was never discussed.

There was times when I was so busy running my dept which was almost half the factory, with the rest working in the office, I had no time to actually do the physical work in another part of the factory, but, I knew the people who I could trust to get something done, so I would delegate I suppose you would say while still actually getting my dept jobs up to date. My files were always up to date and I made duplicate files from the main office so I was fully aware of what kind of workload we had. I took it on myself to take over goods in and out. Where it had run with three people, I and a young boy gradually took over and I taught him so when I had the odd day off, which was holidays and at most one day at most, he could get the job done. It was organised with isles with stuff to ship nearest the goods bay. So you could see at a glance what was due out next.

I told you that not to show off. There was always about five or six 'new people', and sometimes they stayed and sometime not. But several stayed and asked me if they could work in my dept. I was like a working boss, rather than in an office all the time. I had an office but spent not much time there. And any new staff in my dept would say, I didn't know you did this, you never let anyone know. But the people who needed to know, knew. All I am saying is I was quiet, no aggravation coming from me at least. Sometimes from others. You often find the quiet ones who do not thump their chest are, from my experience, the one that could be trusted. It matters not what a boss thinks, or what you think he thinks, is nearer the truth. If you are sincere, and most of all work hard there will always be someone who notices. You may not know until they ask you in the office and ask you to do something, because it is desperate. Or ask you to take a section over.

If someone has enough time to shout and preen, they are not doing their job, which should come first while you are at work. You may not always see that if you are a subcontractor but, again, do not try and let people think you are something you are not. Just do your job.

That mention about the wire key-ring I did for myself to make my job easier. Except, it was not wire it was some specialised machine screws, and I had a case of all the different print jobs and what paper or card they were on. Really things to make my like easier.

Sorry about the rant. I doubt you will get back into the job you are doing, again. If you really wanted to do that job, you would have fitted in or made yourself fit in like a glove. Stop worrying what others think and keep your head down and get on with whatever your job is. I never spoke like this at work. Because my actions spoke for me. Body language is an important this. You can't really kid anyone with it. But you will find that out as you learn your trade in whatever job.

Keep in touch OK? And do not drift through life thinking "I will do that next time", because there may not be another chance. Choose your profession and stick to it and get to know it inside out. I am no genius. I was good at my job though. It is a lot easier now with the internet and CR4. I had to work hard at work and when I was home and at the weekends I would be planning this and that job. Because I enjoyed my job. I knew I was the one that was responsible for several million pounds in turnover. If I could get a job out on time or before I was pleased. I did not want or need anyone to say you did well. Twice I think that happened. But once I had started work proper and on two occasions the holding company of two firms called it a day. But I was out of work for less than a week each time, and was headhunted four times. I knew my limits I guess. But I could also see the bigger picture. I had a total of five jobs. but two lasted 12 and 15 years.

Take care my friend and do please keep in touch...................

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#43

Re: An Easy Way to Remember Sheet / Wire Gauges

01/23/2009 4:33 AM

Best recommendation I have is to carry a piece of #14 with you. If the cable is larger, it is probably #12 or larger... smaller, #16 or less (of course without insulation). There is a logorithmic equation which describes AWG to diameter, but I can't remember if I found it here or elsewhere.

Sincerely

Bill

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#44
In reply to #43

Re: An Easy Way to Remember Sheet / Wire Gauges

01/23/2009 11:45 AM
Wire Gauge and Current Limits

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AWG Wire Sizes (see table below)

AWG: In the American Wire Gauge (AWG), diameters can be calculated by applying the formula D(AWG)=.005·92((36-AWG)/39) inch. For the 00, 000, 0000 etc. gauges you use -1, -2, -3, which makes more sense mathematically than "double nought." This means that in American wire gage every 6 gauge decrease gives a doubling of the wire diameter, and every 3 gauge decrease doubles the wire cross sectional area. Similar to dB in signal and power levels. An approximate form of this formula contributed by Mario Rodriguez is D = .460 * (57/64)(awg +3) or D = .460 * (0.890625)(awg +3).

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#47

Re: An Easy Way to Remember Sheet / Wire Gauges

01/23/2009 8:40 PM

The pocket tool is the only one available in my area. It costs about 30 USD

Programming the formula or typing the table in my calculator is a nice idea. I will buy myself a TI 89 (I currently own the bulky Voyager) so I can have it hanging in my belt, following babybear's advice. Then I can have the formula or table at hand.

However, the most important thing would be to kick my old Renault 19 and buy a truck. That will solve all my image problems.

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#49

Re: An Easy Way to Remember Sheet / Wire Gauges

01/25/2009 9:48 AM

If you are familiar with NEC (National Electrical Code book) 2008 NFPA 70

Chapter 9,Table 8, page 681, third column from left .

Gives you the Area of AWG wire in Circular mils.

As the area goes up The AWG size goes down untile size #1.

Then 1/0 that is pronounced ,one aught (not sure of spelling).

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