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Unread 05-11-2019, 05:45 PM   #1
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Default where to get copper buss bar and terminal covers?

I'm having a little trouble locating these for a 14S4p setup. I've contacted EV battery center but no response. I'm fine cutting the copper lengths myself if someone can direct me to where I can get one that's sufficient width and thickness for leaf g2 modules.
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Unread 05-11-2019, 05:46 PM   #2
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Default Re: where to get copper buss bar and terminal covers?

Quote:
Originally Posted by sporty2k View Post
I'm having a little trouble locating these for a 14S4p setup. I've contacted EV battery center but no response. I'm fine cutting the copper lengths myself if someone can direct me to where I can get one that's sufficient width and thickness for leaf g2 modules.
Are you looking for something like this, its a 14 pack leaf

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Unread 05-12-2019, 09:16 AM   #3
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Default Re: where to get copper buss bar and terminal covers?

I've used 1/8" x 1/2" copper bar stock I got from my local metal supply (the thinnest they had in stock) and I havent had any problems. The internal bus bars inside each module that tie the 2 cells in parallel is 1/2" wide x 3/32" thick.

I'd personally go with 3/4" wide x 3/32" if you can find it for the outer series / parallel connections.
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Unread 05-12-2019, 11:34 AM   #4
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Default Re: where to get copper buss bar and terminal covers?

copper bus bar - McMaster #8964K2

https://www.mcmaster.com/catalog/125/3906
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Unread 05-12-2019, 10:50 PM   #5
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Default Re: where to get copper buss bar and terminal covers?

Thank You Very Much!
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Unread 05-13-2019, 08:10 AM   #6
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Default Re: where to get copper buss bar and terminal covers?

Anyone measured the temperature of their buss bars after a long ride?

It seems like to keep the buss bar under a 30C rise over ambient temperature that a 1/16" x 1" would be better:

Buss bar ampacities chart:
https://stormpowercomponents.com/res...c11000-busbars
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Unread 05-13-2019, 09:16 AM   #7
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Default Re: where to get copper buss bar and terminal covers?

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Originally Posted by Sergio View Post
Anyone measured the temperature of their buss bars after a long ride?

It seems like to keep the buss bar under a 30C rise over ambient temperature that a 1/16" x 1" would be better:

Buss bar ampacities chart:
https://stormpowercomponents.com/res...c11000-busbars
If 1/8th vs 1/16th is that better or worse?
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Unread 05-13-2019, 09:26 AM   #8
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Default Re: where to get copper buss bar and terminal covers?

If You start with 1/16" x 1" and double it, the 1/8" x 1" stacked size is worst than 1/16" x 2" side by side, even though it is the exactly same amount of copper.

The ability of dissipating heat is more important than the actual gauge of the buss, similar to how battery cables should be sized.

Since there are so many different enclosures being used on top of these bussbars, looking at your sustained current use and the the chart I linked will help make sure it is sized correctly.
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Unread 06-05-2019, 12:36 PM   #9
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Default Re: where to get copper buss bar and terminal covers?

I started putting bus bars on my leaf pack and then found the busbar circuit board that's sold on line that alleviates the bus bar and BMS wiring manually by having all the wiring on the circuit board. It has the socket and wiring harness on it for the BMS. For $20 it's worth it. I don't have to solder connectors on the 15 wires from the BMS and it looks real neat (on the Interent). It should be here tomorrow,and hopefully my BMS will arrive also. My charger is floating somewhere between China and the U.S. so I have no idea when that will arrive.
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Unread 06-05-2019, 12:42 PM   #10
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Default Re: where to get copper buss bar and terminal covers?

Do you have a link or part number to see what it looks like?
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