What gauge wire should I get for DC connection on my charger?

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.

Eyeman

Member
Messages
19
Reaction score
33
Location
Vermont
Arrma RC's
  1. Granite
  2. Typhon 6s
I mars d300 is the charger

I have a motorcycle battery that I'll use to charge batteries when I'm not at home
 
Charger is rated for 16Amps max draw:


1709916123564.png
 
14 ga wire should be fine.

As an FYI those amp ratings are for long durations. You can put 300a though a 10ga wire in an RC car for 10 seconds no issues.
Depends if it's an inflated Castle amp Rating or Hobbywing :cool:
 
You could get into some pretty hypothetical math here, but really keep in mind that wire gauge rating is entirely built around the purpose of ensuring that even when used at their max amp rating, perpetually, the wires won't get hot enough to cause fires inside the walls of a building. I would shoot for 14g or 12g. But 16g would very likely still handle 30 amps just fine without issues, which roughly equate to charging two 8000mah 6s packs at 1c from a 12v car battery.

Screenshot_20240308_093710_Drive.jpg
 
Size is based on allowable temperature increase, so yes, wires do get warm under load.

You can always calculate your own needs. Your welcome!
There will be a written test tomorrow, in this thread:

The diameter of an AWG wire is determined according to the following formula:
d n = 0.005 i n c h × 92 ( 36 − n ) / 39 = 0.127 m m × 92 ( 36 − n ) / 39 {\displaystyle d_{n}=0.005~\mathrm {inch} \times 92^{(36-n)/39}=0.127~\mathrm {mm} \times 92^{(36-n)/39}}
(where n is the AWG size for gauges from 36 to 0, n = −1 for No. 00, n = −2 for No. 000, and n = −3 for No. 000

https://en.wikipedia.org/wiki/American_wire_gauge
 
Back
Top