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Mil-W-5088L Wire Size Calculator spreadsheet

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hotwheels

Joined: 01 Jun 2007
Posts: 240

Posted: Sun Feb 03, 2008 12:35 pm Post subject: Mil-W-5088L Wire Size Calculator spreadsheet

PRetty handy wire size calculator spreadsheet is attached. Has anyone used it before? I've been playing around with it some and it looks to be pretty accurate. 



There may be a newer version, but I haven't yet been able to locate the  author (Scott Dahlgren) to ask...



Regards,

Jay

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wire size.xls

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wire size.xls

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hotwheels

Joined: 01 Jun 2007
Posts: 240

Posted: Wed Feb 06, 2008 12:13 pm Post subject: Re: Mil-W-5088L Wire Size Calculator spreadsheet

Weight? Who cares? The point is that one can use the spreadsheet to quickly compute Wire Size given Current (amps) and Length.



Jay



> Life is an estimate. This is one of those things that looks useful up

>      front, but it's like counting calories. Naturally, the total weight of

>     all your wire before the install will differ greatly after the install.

>     The best approach might be to use this at the end. Collect all your

>      receipts for wire purchases, subtract the waste and enter the balance.

>      Ok, you'll have your estimated wire weight and now you can decide

>      whether using that #2 cable for the #19 rear battery install was too

>      heavy and then rip it all out

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echristley(at)nc.rr.com
Guest

Posted: Wed Feb 06, 2008 7:57 pm Post subject: Mil-W-5088L Wire Size Calculator spreadsheet

jayb wrote:

 	  Quote: 	

 Weight? Who cares? The point is that one can use the spreadsheet to quickly compute Wire Size given Current (amps) and Length.

 Jay

> Life is an estimate. This is one of those things that looks useful up

>      front, but it's like counting calories. Naturally, the total weight of

>     all your wire before the install will differ greatly after the install.

>     The best approach might be to use this at the end. Collect all your

>      receipts for wire purchases, subtract the waste and enter the balance.

>      Ok, you'll have your estimated wire weight and now you can decide

>      whether using that #2 cable for the #19 rear battery install was too

>      heavy and then rip it all out 

It's not inconceivable that some builders would want to use the smallest 

wire possible, but I would think that it would be to keep large bundles 

to a manageable size more than weight concerns.  To insure that I didn't 

sell myself short, or waste wire, I created the spreadsheet at

http://ernest.isa-geek.org/Delta/Library/WireSelection.ods

You first input your ship's nominal voltage.  Then for each device, you 

input the round-trip wire run length and the amount of current the 

device draws.  It displays how much voltage will be available to the 

device for each of several wire AWG sizes.  The "best" size will drop 

between 2% and 4% of the voltage in the wire.  These choices are shown 

as green.  Those choices highlighted in yellow will drop between 4% and 

5%.  Anything that would drop more than 5% of the voltage in the wire is 

likely to overheat, and is shown in red.

-- 

http://www.ronpaultimeline.com

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tim2542(at)sbcglobal.net
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Posted: Wed Feb 06, 2008 10:13 pm Post subject: Mil-W-5088L Wire Size Calculator spreadsheet

What file format is that? EXEL won't open it.

Thanks

Tim Andres



--

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harley(at)AgelessWings.co
Guest

Posted: Thu Feb 07, 2008 4:41 am Post subject: Mil-W-5088L Wire Size Calculator spreadsheet

Tim...



 	  Quote: 	
		  >What file format is that? EXEL won't open it.

http://ernest.isa-geek.org/Delta/Library/WireSelection.ods
	




It's Open Office...you can get the free, open source program here: 

www.openoffice.org



You might want to consider having that around as it is quite useful in 

reading and writing to a variety of different program formats.  But, 

unlike Excel, Open Office WILL open it's competitors files!



 From the description of Open Office on their website:

"the product is a multi-platform office productivity suite. It includes 

the key desktop applications, such as a word processor, spreadsheet, 

presentation manager, and drawing program, with a user interface and 

feature set similar to other office suites. Sophisticated and flexible, 

OpenOffice.org also works transparently with a variety of file formats, 

including those of Microsoft Office"



Harley Dixon

------------------------------------------------------------------------

Tim Andres wrote:

 	  Quote: 	
		   



 What file format is that? EXEL won't open it.

 Thanks

 Tim Andres

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echristley(at)nc.rr.com
Guest

Posted: Thu Feb 07, 2008 5:43 am Post subject: Mil-W-5088L Wire Size Calculator spreadsheet

Harley wrote:

 	  Quote: 	
		   



 Tim...



>> What file format is that? EXEL won't open it.

 http://ernest.isa-geek.org/Delta/Library/WireSelection.ods



 It's Open Office...you can get the free, open source program here: 

 www.openoffice.org




	


Close, but not quite.  Open Office is just ONE of the packages that 

support ODF file formats.  Word Perfect, Lotus Smartsuite and several 

others also support it.  Sun Microsystems also has a plug-in for the 

Microsoft programs that will enable ODF.

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echristley(at)nc.rr.com
Guest

Posted: Thu Feb 07, 2008 5:52 am Post subject: Mil-W-5088L Wire Size Calculator spreadsheet

Tim Andres wrote:

 	  Quote: 	
		   



 What file format is that? EXEL won't open it.

 Thanks

 Tim Andres

   

ODF.  It is an open format supported by a variety of vendors.  Microsoft 
	


has chosen not to support it, because they're afraid of the competition 

in an open market, but there are a some plug-ins available that will 

allow Excel to read it.  Here are a couple:



http://sourceforge.net/projects/odf-converter

http://www.sun.com/aboutsun/pr/2007-02/sunflash.20070207.1.xml

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