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Need help hardwiring power inverter

Discussion in 'Technical Chat' started by cubs16, Jan 5, 2020.

  1. Jan 5, 2020 at 6:05 AM
    #1
    cubs16

    cubs16 [OP] Member

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    Not too long ago I picked up the bestek 300w "pure sine" power inverter from Amazon. I know it's not the best option, but it fits my budget and needs. I am going to put it in my truck camper and need advice on how to wire it. It came wired with a 12v plug. I was just wondering if I should cut it off and wire it directly to the battery or use something like this.

    https://www.amazon.com/dp/B075KF1K84/ref=cm_sw_r_cp_apa_i_mYEeEb84GCVA4

    If I wire it directly to the battery, what guage wire should I use? Any help is appreciated, I'm new to the world of wiring!
     
  2. Jan 5, 2020 at 6:23 AM
    #2
    rnish

    rnish Well-Known Member

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    300 watts is not that much. A hair dryer can be 1200-1600 watts. Regardless, gauge of wire is determined by length of run and current draw. What does the inverter recommend? Also install a breaker or fuse in front of the inverter.
     
  3. Jan 5, 2020 at 6:37 AM
    #3
    cubs16

    cubs16 [OP] Member

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    Yeah I mainly just plan on using it for charging phones and my laptop so it should be plenty for my needs. I was thinking because it's only 300 watts I should be able to just use the adapter I linked right? But there is no information that came with the inverter on wiring it because it just came with the 12v plug attached to it. Heres a link to what I got.

    https://www.amazon.com/dp/B07KQ4Q2L5/ref=cm_sw_r_cp_apa_i_MrFeEbF3SJ682
     
  4. Jan 5, 2020 at 6:39 AM
    #4
    Cudgel

    Cudgel “Tonka”

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    How do you plan to use it?
    How far from the battery do you plan to mount it?
    How big Is the integrated fuse rated for?
    https://www.bluesea.com/resources/1437
     
  5. Jan 5, 2020 at 6:50 AM
    #5
    mtip

    mtip Go Outside & Play!!!

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    Welcome to TW.

    DC_wire_selection_chartlg-1.jpg
     
    Cudgel likes this.
  6. Jan 5, 2020 at 6:51 AM
    #6
    rnish

    rnish Well-Known Member

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    400 watts, 10 feet, #14 gauge you should be good. That gives you extra capacity to expand.
     
    Last edited: Jan 5, 2020
  7. Jan 5, 2020 at 6:52 AM
    #7
    Cudgel

    Cudgel “Tonka”

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    I looked at that on Amazon. I’d suggest you use it as is from a power port. It will not likely give you the full wattage it states in the marketing literature but to charge a laptop it’ll probably work. Try it for 1/2 hour and see if it starts on fire. I’d not permanently mount it. If you later decide you need more power you’re likely upgrading to a much more robust inverter with heat syncs designed to be permanently mounted, just plug and play after your test.
     
  8. Jan 5, 2020 at 7:04 AM
    #8
    0xDEADBEEF

    0xDEADBEEF lolcowboy

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    What are the power ports in your truck rated for? If you pull a full 300 watts through them I bet you'll blow a fuse.
     
  9. Jan 5, 2020 at 6:10 PM
    #9
    cubs16

    cubs16 [OP] Member

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    Thank you all for the help!
     

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