Copper wire/braid dimension for 55 amps

[kje]

What dimension copper wire or braid do I need to solder a big 18650 battery pack with a max draw at 55 amps?

 

[LockH]

From our friends in Kansas:
http://www.aeroelectric.com/articles/wiresize.pdf

Hope that helps! (but maybe one of those darned linemen.)

L

 

[agniusm]

Using 1mm thick flat copper sheet you need strip 6.5mm wide.

 

[dnmun]

10AWG will be ok

 

[kje]

10AWG will be ok

Thanks!

What is the dimension on this one? http://www.ebay.com/itm/Belden-tinned-copper-tubular-braid-ground-strap-5-16-X-20-/131088951564

 

[dnmun]

who knows. why would you use braid for conductor? usually braid is used as a ground shield.

 

[Hillhater]

why would you use braid for conductor?.

Flexible...No mechanical load on the cell
Available tinned ....easy to solder
cheap.

 

[kje]

I`ve now ordered it, wich was a recommendation from DrkAngel, a man with a lot of knowledge about building battery packs. You can read his big thread about it here: Homemade Battery Pack

 

[dnmun]

sorry you were mislead. just a waste when you can use regular copper wire.

 

[Hillhater]

What are the advantages of 10g Cu wire over braid ?

 

[LockH]

Ummm... For the benefit of some here (watt may be from another planet), "G" or "AWG" in this thread might refer to a wire guage used by our `Merican compadrees. Some here may instead subscribe to the International System of Units and the "meter", first popularized by some boney French guy (whose name I forget at the moment), and besides, the word "guage" is stolen from the French word, who in turn stole the word from those crazy Germans, and so in. So "guage" might also be measured in "meters", or fractions (one 10th, one 100th, and so on).

 

[dnmun]

What are the advantages of 10g Cu wire over braid ?

cheaper and simpler. i feel this guy was led to believe he needed to use expensive braid to connect the cells together. i feel that is unfair to newbies that they have to suffer from such misinformation and don't have the ability to tell it is just an excessive waste of money. but it is his money so he can and did do what he wanted.

i see all kinds of distortions promoted. the guy who built the 12S8P of lipo cans used some doubled up twisted pair conductor. but he ran it from side to side on the parallel group where it is not needed and had only one conductor on the end to carry the current from one cell to the next in series. that to me was a glaring defect but he had a bad attitude too so i never discussed it with him either.

so he had to overheat the case on every lipo can he soldered to, when instead, he could have soldered them in series with just the 12G only and then used something light like even 26G to do the parallel. lightweight copper strips that would span the 20 mm center to center would have been easier and he coulda pretinned both of the ends and then would have had very little heating damage when he soldered it.

but he thought that made sense so that is how he did it. all these people have their own idea. i feel you only need a large conductor in the series direction, not in parallel. you can think what you want.

 

[Hillhater]

Are you suggesting that instead of building 12 parallel 4.0v sub groups of 8P, which are then connected into a 48v series pack of 12s...
...that he should have built it a 8, 48v sub groups of 12S , which would then be connected into a parallel pack of 8p ..??