Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12

Thread: Anyone know what an acc wire can handle?

  1. #11
    Newbie rybitski's Avatar
    Join Date
    Apr 2008
    Quote Originally Posted by pancit175 View Post
    I would suggest, if you havent already considered it, use a relay to isolate your voltmeter from the acc line for the reason of getting a more accurate reading if you'd like.
    This makes no sense and would not provide a more accurate reading because the acc voltage comes from the battery, just like any other positive wire in the car.

  2. #12
    Variable Bitrate
    Join Date
    Jun 2004
    Although in most cases it wouldn't matter, pancit175 has a point. Depending on how much load you are putting on your ACC wire, and the guage of the wire, it could give you a somewhat lower reading that is not necessarily reflective of the battery voltage. As the draw increases on the ACC wire the voltage on that wire will be somewhat lower, even if the battery voltage has remained constant. Running a separate wire for the volt meter, and simply signaling-on the meter with the ACC wire would be more accurate. How much accuracy is required or whether this small difference is even measurable would be debatable.

    ** Denotes an "in car" post
    In-Car posts made from passenger seat - Be safe, Don't Post and Drive.

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Do I Need To Beef Up My Alternator Or Anything Else
    By chitown_16 in forum Car Audio
    Replies: 32
    Last Post: 12-05-2009, 10:10 AM
  2. Heat insulation on 24 gauge wire?
    By AznArkitekt in forum Power Supplies
    Replies: 2
    Last Post: 10-07-2006, 10:59 PM
  3. Opus ignores ignition wire, constantly stays on
    By Sham-Mobile in forum Power Supplies
    Replies: 1
    Last Post: 08-26-2006, 06:28 PM
  4. Difference between ACC and Ignition wire?
    By bluehcc in forum Power Supplies
    Replies: 8
    Last Post: 05-12-2005, 04:30 PM
  5. Replies: 11
    Last Post: 03-09-2004, 09:59 AM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts