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Old Jan 10, 2005, 04:06 AM
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djgorman23's Avatar
Joined Dec 2004
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Wire gauge versus amps ?

Is there a guide which says how many amps a particular wire gauge (e.g. 16 awg) can handle??
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Old Jan 10, 2005, 05:07 AM
When in doubt whip it out
French Polynesia
Joined May 2004
175 Posts
It depends on what wire your are planing on useing. below is what I use for referance using Silicone Rubber High strand count wire

13AWG Wire
100+ amps

14AWG Wire
50-75+ amps

16AWG Wire
25-74 amps

18AWG Wire
up to 25 amp

20AWG Wire
up To 20 amp

22AWG Wire
up to 10 amp

Your milage may very!

-SNoWJackal
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Last edited by snowjackal; Jan 12, 2005 at 12:08 AM. Reason: added bold and red
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Old Jan 10, 2005, 05:13 AM
Whatever happens..Happens
jswjimmy's Avatar
Sanford, Maine, United States
Joined Aug 2004
628 Posts
this is from www.cheapbatterypacks.com
13=100+amps
14=50 to 75 amps
16=25 to 74 amps
18=less than 25 amps
20=less than 20 amps
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Old Jan 10, 2005, 05:13 AM
Whatever happens..Happens
jswjimmy's Avatar
Sanford, Maine, United States
Joined Aug 2004
628 Posts
Quote:
Originally Posted by snowjackal
It depends on what wire your are planing on useing. below is what I use for referance using Silicone Rubber High strand count wire

13AWG Wire
100+ amps

14AWG Wire
50-75+ amps

16AWG Wire
25-74 amps

18AWG Wire
up to 25 amp

20AWG Wire
up To 20 amp

22AWG Wire
up to 10 amp

Your milage may very!

-SNoWJackal

you beat me to it...
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Old Jan 10, 2005, 05:26 AM
When in doubt whip it out
French Polynesia
Joined May 2004
175 Posts
yeah and we got the info from the same sorce! www.cheapbatterypacks.com

-SNoWJackal
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Old Jan 10, 2005, 05:51 AM
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djgorman23's Avatar
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125 Posts
cool, thanks guys
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Old Jan 10, 2005, 09:49 AM
Southern Pride
everydayflyer's Avatar
Haralson County GA. USA
Joined Oct 2004
34,665 Posts
Just in case anyone wants a more complete chart and a few formulars aloso.

http://www.powerstream.com/Wire_Size.htm

Charlest
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Old Jan 10, 2005, 10:13 AM
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E-Challenged's Avatar
United States, CA, Garden Grove
Joined Oct 2000
11,886 Posts
I have noticed battery/esc wiring and connectors getting warm when I pulled 8+ amps though servo type connectors and 26 guage wires on 720 mah 8-cell NiMh packs. It probably better to use larger guage wire and connectors in this range.
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Old Jan 10, 2005, 10:56 AM
Southern Pride
everydayflyer's Avatar
Haralson County GA. USA
Joined Oct 2004
34,665 Posts
Quote:
Originally Posted by E-Challenged
I have noticed battery/esc wiring and connectors getting warm when I pulled 8+ amps though servo type connectors and 26 gage wires on 720 mah 8-cell NiMh packs. It probably better to use larger gage wire and connectors in this range.
That would be pushing the limits for sure. Most of my 860 and under Li Po packs have 20 gage and JST connectors. The only Li Po packs which I have purchased which had smaller than 20 gage wires were Kokams.

Charles
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Old Jan 11, 2005, 10:34 PM
Watts your motivation
roccobro's Avatar
San Bernardino, CA
Joined Aug 2003
6,512 Posts
I always went by the following chart. I think it came from Backyard flier or Q&E Flier.

Justin
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Old Jan 11, 2005, 11:13 PM
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Helicool's Avatar
Toronto, ON Canada
Joined Jul 2002
877 Posts
How about paralell wiring?

I probably know better then to ask this, but I am curious to see what others think.

For arguments sake, lets say that I have a 3S2P Pack at 11.1 volts (nominal). While each 3S pack is capable of delivering 15A continuous, when I paralell 2 banks of 3S I can now draw 30amps.

So... which of the following is "correct'?

- 18G wire for each bank, "Y"ing to 16G
- Paralell using the tabs on each bank and just use 16G wire (Can the tabs take 30A?)
- just use 12G cable for everything just to be safe.

I tend to think #3 is the "Safe" way to go - how do you all feel?
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Old Jan 11, 2005, 11:21 PM
Watts your motivation
roccobro's Avatar
San Bernardino, CA
Joined Aug 2003
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The first is what I'd do. But then again I have the odd chart that I go by.

Justin
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Old Jan 11, 2005, 11:33 PM
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Joined Dec 2004
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just remember, the bigger the wire the better the current flow and the lower the temp of the wire due to less resistance of the wire. I would also go with your first choice.

Marty
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Old Jan 11, 2005, 11:42 PM
Watts your motivation
roccobro's Avatar
San Bernardino, CA
Joined Aug 2003
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And 12 gauge is REALLY big for 15 amps!

Justin
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Old Jan 11, 2005, 11:45 PM
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Joined Nov 2004
86 Posts
Quote:
Silicone Rubber High strand count wire
This is VERY important the in amp ratings of wire. If you go to your local electronics store to buy wire, the standard stuff will not be either high strand count or silicone rubber coated. Therefore, the amp ratings will be FAR less than mentioned above.
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