Forum Discussion

E_J_push_n_wind's avatar
E_J_push_n_wind
Explorer
Jan 23, 2015

Inverter/Converter help?

I'm looking to add a PSW inverter to my TT, I'm thinking somewhere in the neighborhood of 3KW. I don't necessarily need something perhaps that big however I'm thinking if I wanted to add battery capacity, this part I would not have to do again. Kind'a do it once and be done. I'm wondering if I could get help in directing me on how would be best to wire it? I'm wanting to isolate my converter when I have the inverter "on." I know it is recomended to have the inverter as close to the batteries as possible (for the current draw on 12V DC vs. 120 VAC) however I am thinking of running heavy wire and place the inverter in the enclosure with the connverter. I would like to somehow have a single switch as a cut-out (if that is possible) so as to "turn off the conver" as the inverter is switched on (a single throw switch that does both?). Is there a way to do what I'm looking for? Any help would be much appreciated.

The TT has two 6V deep cycle marine batteries right now. The idea is to have all outlets energized through the inverter realizing that my "power supply" is limitted by the number of amphours available with the batteries I have on board.
  • time2roll's avatar
    time2roll
    Nomad
    Jan 23, 2015
    How may feet will you be from the battery? You will need minimum 4/0 wire about the size of a garden hose. Four batteries minimum, six+ preferred for 3000 watts.

    Combo unit is fine or wire the inverter to provide power after the converter so that you have no issues.
  • 2oldman's avatar
    2oldman
    Explorer II
    Jan 23, 2015
    E&J push'n wind wrote:
    I would like to somehow have a single switch as a cut-out (if that is possible) so as to "turn off the conver" as the inverter is switched on (a single throw switch that does both?). Is there a way to do what I'm looking for?
    If you buy an I/C it's all done automatically.

    If you're sinking big bux into a unit, and preparing for heavy use, an IC has a much better charger than your converter. That way, you really are done.
  • mena661's avatar
    mena661
    Explorer
    Jan 23, 2015
    Running the microwave, Keurig or other high wattage appliance from the battery bank would be the reason for wanting a 3kW inverter. 2kW will handle those items easily and save you a few bucks. If you're not planning on running anything like that, a 300W inverter will run most anything. Two 6V's is light for a 2kW inverter let alone a 3kW. Most here have four 6V's minimum.

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