Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: Inverter Wiring

  1. #1
    Newbie
    Join Date
    May 2004
    Posts
    19

    Inverter Wiring

    Hi,
    I don't know much about power and what not so this might sound like a stupid questoin. I bought a power inverter (lack of funds to buy anthing better), and it came with 12 Gauge wire to hook up to the battery, but the problem is that the wire they gave me was about 1 1/2 ft long. So i went to radio shack got some 20 FT 12 guage wiring and wired it up. I later talked to my friend who said that I should have gone with a higher gauge wiring because after 15ft or so it loses power or something of that nature. But I want to check with you guys first before going out and redoing everything. What gauge of wiring should I get? I'm running it about 20 ft from the battery to my trunk and how big of a fuse should I get? It's a 400 Watt Coleman Power Inveter.
    Thanks!

  2. #2
    Variable Bitrate no1knows's Avatar
    Join Date
    Feb 2004
    Location
    Guildford, Surrey, UK
    Posts
    293
    400W, 400/12 = 33A.
    I'd say u need fatter than 12 gauge, quite a bit fatter.
    As for a fuse, anything above 33A will be fine, go for a 40 to allow for spikes.

    depending on its max wattage of course. if its 400 steady then the above is fine. It also depends on your load if your only using 100W (make adjustments for innacuracy) then 12gauge will be fine.

    HTH
    Mods: 18" Boss rims,Twin custom stainless exhaust,cold air induction.
    Sound: Pioneer 7400 HU & 6x9's,12" Vibe Sub,600W Kenwood amp.
    CarPC: MicroATX, Inverter, WinTV, Lilliput 7", USB GPS
    http://www.no1knows.com/galleries/

  3. #3
    Newbie
    Join Date
    May 2004
    Posts
    19
    Hi,
    What gauge do you suggest getting then? How do I figure out my load?

  4. #4
    Newbie
    Join Date
    Jun 2004
    Location
    Winnipeg, Canada
    Posts
    42
    What are you going to use the inverter to power?

  5. #5
    Newbie
    Join Date
    May 2004
    Posts
    19
    Just a standard desktop computer and an X10 camera.

  6. #6
    Newbie
    Join Date
    Jun 2004
    Location
    Winnipeg, Canada
    Posts
    42
    depending on what components are in your computer, you will probably be drawing no more than 250W. If thats the case then you can probably get by with 12 gauge, but you might want to go with 8 gauge just to be sure.

  7. #7
    Newbie
    Join Date
    May 2004
    Posts
    19
    Yeah, I think i'll go with 8 just to be sure, i wanted to rewire things anyways.

  8. #8
    Newbie
    Join Date
    May 2004
    Posts
    19
    Would I need a higher fuse. Following the math that no1knows. 400/8 = 50?

  9. #9
    Top Ramen lgbr's Avatar
    Join Date
    Feb 2004
    Location
    Spokane, WA, US
    Posts
    973
    Watts / Volts = Amps
    Not Watts / Wire = Amps

    Make sure the fuse is less than 18 inches from the battery.
    Audio Rockford Fosgate: 900 Watt 4-channel amp, 501bd Mono amp
    Computer AMD 2400+ XP, 1 GB DDR RAM, Orbit Micro 250W DC-DC PSU

    Head units are for cheaters!
    sure some girls fake orgasms.....but it's guys like me who fake the whole relationship

  10. #10
    Newbie
    Join Date
    May 2004
    Posts
    19
    So 50A fuse would work...?

Page 1 of 2 12 LastLast

Similar Threads

  1. relay, inverter, fuse problems
    By cheesyhoward in forum Power Supplies
    Replies: 5
    Last Post: 06-02-2005, 10:04 AM
  2. Wiring inverter?
    By Misanthro in forum Power Supplies
    Replies: 4
    Last Post: 12-08-2003, 10:20 AM
  3. Newbie....help regarding inverter and wiring..
    By SlimJimmy in forum Power Supplies
    Replies: 7
    Last Post: 07-30-2003, 10:55 AM
  4. wiring an inverter?
    By dek86 in forum Power Supplies
    Replies: 5
    Last Post: 08-07-2002, 06:05 PM
  5. odd inverter behavior
    By jshrieve in forum General Hardware Discussion
    Replies: 30
    Last Post: 04-10-2001, 05:53 AM

Bookmarks

Posting Permissions

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