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ghrost's avatar
ghrost
Explorer
Mar 29, 2018

Question: plugging shore power cord directly into Inverter.

Hello,

This is my first post and of course it'll be going into the tech issues section. I recently acquired an old 1981 Chevy Brougham , I believe it's 21 footer. I plan on hooking up solar to the rig using three 100 watt solar panels and a good size pure sine wave inverter.

Now I've seen this asked before if you are able to plug your shore power cord directly into the solar inverter and the general answer is YES but to turn off your converter.

Now my plan is to have a separate solar battery bank set up that is going to power the inverter. The RV appears to no longer have a "house battery" hooked up and it appears the wire to the would be house battery is cut. So right now the only way to get power to the lights, etc is plugging into an outside power source or running the generator.

Now forgive me if I sound dumb for I am not very savvy in the electrical department. If there is no "house battery" for the converter/charger to charge will I have the need to "turn off" the converter. I have 2 breakers that are listed as follows: "A/C Unit" and "Lights" so I'm assuming the converter is wired to one of those since those power everything in the RV.

Let me know if I need to provide additional information.
Thank you for the help.

16 Replies

  • time2roll wrote:
    Safe sure. Efficient... not even close. You will lose half your power to conversion and have a high idle draw on the battery.

    Virtually no inverter is related to solar. Inverter just makes 120vac from battery power and does not care what recharges that battery.

    But really just connect the battery to the 12v system.

    Also verify your inverter is made to connect to an RV electric distribution system. Some do not like the 120v ground connected to the 12v side of the battery supplying power.



    I guess connecting to the 12v wouldn't be much work. Since there are no house batteries currently in the rig. And will keep that in mind on the inverter, still shopping around.

    Thanks!
  • Safe sure. Efficient... not even close. You will lose half your power to conversion and have a high idle draw on the battery.

    Virtually no inverter is related to solar. Inverter just makes 120vac from battery power and does not care what recharges that battery.

    But really just connect the battery to the 12v system.

    Also verify your inverter is made to connect to an RV electric distribution system. Some do not like the 120v ground connected to the 12v side of the battery supplying power.
  • Solar panels feed electricity to a charge controller that recharges batteries. Inverters are hooked to batteries and convert 12 volt power stored in batteries to 120 volt electricity. How much are you planning to spend on a THIRTY-SEVEN year old RV with no house batteries?
  • Your new solar battery bank will become your house battery.
  • pianotuna wrote:
    If there is no battery to charge then the converter needs to be powered to provide for the 12 volt requirements of the RV.


    So it would be safe to leave it on as is while inverter is running.. It wouldn't be running for long periods of time.
  • If there is no battery to charge then the converter needs to be powered to provide for the 12 volt requirements of the RV.

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