1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

DC Wire Gauge (size) requirements?

Discussion in 'Lighting' started by StaticFilter, Jan 3, 2010.

  1. Jan 3, 2010 at 2:43 PM
    #1
    StaticFilter

    StaticFilter [OP] Well-Known Member

    Joined:
    Apr 20, 2009
    Member:
    #16228
    Messages:
    718
    Gender:
    Male
    First Name:
    Jason
    Cedar Hills, UT
    Vehicle:
    2008 Blue FJ Cruiser
    Lifted, N-Fab steps, Roof rack light bar, Grill guard, Volant Snorkel (not installed ye)
    I'm an electrician, but I deal with mostly AC circuits from 120v-480v... I do some lower voltage stuff like Fire Alarm (24v). It's my understanding that DC systems need larger wire, is there a conversion chart or Allowable Ampacities of Conductors chart for DC systems?
    If I have 4 100 Watt lights on 12 volts DC it comes to 33.4 Amps, 12 and maybe 14 gauge wire would be okay if it was an AC circuit, but what about for DC?
    I pretty much want to find out if I can replace 2 of my 55w lamps with 100 watt lamps without running new wire
     
  2. Jan 3, 2010 at 4:26 PM
    #2
    DDD

    DDD Shine bright like a hymen

    Joined:
    Mar 6, 2009
    Member:
    #14416
    Messages:
    2,194
    Gender:
    Male
    First Name:
    Derek
    Santa Clarita, CA
    Vehicle:
    06 DC 4x4 TRD Off-Road
    It depends on the length of the wire, but 14 should be ok.

    Look at this.
     
  3. Jan 3, 2010 at 4:33 PM
    #3
    StaticFilter

    StaticFilter [OP] Well-Known Member

    Joined:
    Apr 20, 2009
    Member:
    #16228
    Messages:
    718
    Gender:
    Male
    First Name:
    Jason
    Cedar Hills, UT
    Vehicle:
    2008 Blue FJ Cruiser
    Lifted, N-Fab steps, Roof rack light bar, Grill guard, Volant Snorkel (not installed ye)
    Thanks! Exactly what I needed
     
  4. Jan 3, 2010 at 4:50 PM
    #4
    Zombie Runner

    Zombie Runner Are these black helicopters for me?

    Joined:
    Mar 13, 2008
    Member:
    #5246
    Messages:
    15,078
    Gender:
    Male
    First Name:
    Kevin
    Wichita Falls, TX
    Vehicle:
    Tundra, double cab.
    LED interior lights, stubby antenna, Pioneer in dash screen, good driver mod.
    I use 12-14 for all my lightsz on my truck
     
To Top