Need connector like USB..that handles 12V at 5A.

Discussion in 'General Electronics Chat' started by Preston Shobe, Apr 30, 2015.

  1. Preston Shobe

    Thread Starter New Member

    Apr 30, 2015
    Can I build a USB cable that handles 12v at 5A if I use a connector shown below, and as long as I use 18 gauge wire? Thanks!

    FYI, this is not going to be used with a computer. We just like the style of connector here (no clips to hold it in place..the size is ideal.. etc).
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
    The connection points are way to small to carry so much current. You will likely get hot-spots and copper oxide formation where you have heat, especially if you connect/disconnect while powered. Would an SAE connector work for you? (Commonly used in automotive)
  3. Ramussons

    Active Member

    May 3, 2013
    The weak link is not the wire, it's the contact. USB has too small a contact area to handle 5 Amps safely for long. It might handle a surge AFTER plugging in. It will surely fail on a Hot Plug In.
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
    Look up Anderson Power Pole. I use these at the 5A to 20A level on all my Ham radios. (and also on my battery chargers).
    Roderick Young likes this.