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Inverter Floating Ground Issue

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  • Inverter Floating Ground Issue

    I just received a 1KW Renogy inverter and have a floating ground. I'm looking at building an Edison plug so not to be blocked by the onboard EMS. However this model has only 1 AC outlet. I'm wonder if I build an adapter with both a male (for the inverter plug) tied to a female plug (for the AC cord)? My thought is if I can do this, I could then use my12 gauge extension cord to plug into a 30amp to 15 amp dogbone at the AC trailer hookup.

    If this could be done, do I wire one side normally and the other as the N-G bond? I don't know if making this adapter would work or cause damage.

    Or can I do the G-N bond on the outlet itself and just plug in and go?

    I'd prefer not to have return the 1KW unit and upgrade to the 2KW unit for $100+ more. The 1KW fits best into the area I would to mount it.

    Hopefully someone has been through this type of issue and can provide a bit of guidance.
    2019 Ford F-150 Lariat 2WD SuperCrew , SoftTopper, Blue Ox SwayPro hitch with 1000lb bars, Billstein 5100 series rear shocks, Hellwig rear swaybar
    2020 Imagine 2600RD with Road Armor + wet bolt suspension, Yakima Longhaul Bike Rack, MicroAir EasyStart 364 for AC, Lion Energy 100amp X2
    Amateur Radio Call N9XGZ
    FMCA # 489460

  • #2
    Originally posted by Running from Gnats View Post
    I just received a 1KW Renogy inverter and have a floating ground. I'm looking at building an Edison plug so not to be blocked by the onboard EMS. However this model has only 1 AC outlet. I'm wonder if I build an adapter with both a male (for the inverter plug) tied to a female plug (for the AC cord)? My thought is if I can do this, I could then use my12 gauge extension cord to plug into a 30amp to 15 amp dogbone at the AC trailer hookup.

    If this could be done, do I wire one side normally and the other as the N-G bond? I don't know if making this adapter would work or cause damage.

    Or can I do the G-N bond on the outlet itself and just plug in and go?

    I'd prefer not to have return the 1KW unit and upgrade to the 2KW unit for $100+ more. The 1KW fits best into the area I would to mount it.

    Hopefully someone has been through this type of issue and can provide a bit of guidance.
    Moved to the Technical Forum > Electrical channel.

    TucsonJim , OffToHavasu (or anyone else)--any insights?
    Forum moderators are not GD employees--we are volunteers and owners presumably just like yourself. Unless specifically mentioned otherwise, we have nothing to gain should you choose to purchase a product or engage a service we discuss on this forum.

    Howard, 2017 Ford F-350 DRW, '19 315RLTSPlus

    Comment


    • #3
      Here's how I'd tackle it. I'd plug in a multi-outlet adapter into the inverter. Then I'd plug the Edison plug and extension cord for the RV into the adapter. Something like this:

      https://smile.amazon.com/Electric-54...589317&sr=8-11

      Jim
      The moderators for this site are not GDRV employees, but we do own GDRV products.

      Jim and Ginnie
      2017 Reflection 297RSTS

      Comment


      • #4
        Unfortunately there is no clearance for a multi-outlet adapter. However, there are terminals for what they call "high output" for AC requiring more than 8.3 amps. It's designed to hook into the distributed wiring of the trailer. Think connecting Neutral to Ground at this point would give me the "ground" signal the EMS is looking for?
        2019 Ford F-150 Lariat 2WD SuperCrew , SoftTopper, Blue Ox SwayPro hitch with 1000lb bars, Billstein 5100 series rear shocks, Hellwig rear swaybar
        2020 Imagine 2600RD with Road Armor + wet bolt suspension, Yakima Longhaul Bike Rack, MicroAir EasyStart 364 for AC, Lion Energy 100amp X2
        Amateur Radio Call N9XGZ
        FMCA # 489460

        Comment


        • #5
          Originally posted by Running from Gnats View Post
          Unfortunately there is no clearance for a multi-outlet adapter. However, there are terminals for what they call "high output" for AC requiring more than 8.3 amps. It's designed to hook into the distributed wiring of the trailer. Think connecting Neutral to Ground at this point would give me the "ground" signal the EMS is looking for?
          That sounds reasonable. Here's another way you could do it:

          https://smile.amazon.com/Cablelera-P...2593949&sr=8-5

          Jim
          The moderators for this site are not GDRV employees, but we do own GDRV products.

          Jim and Ginnie
          2017 Reflection 297RSTS

          Comment


          • #6
            Originally posted by TucsonJim View Post

            That sounds reasonable. Here's another way you could do it:

            https://smile.amazon.com/Cablelera-P...2593949&sr=8-5

            Jim
            Thanks, that looks interesting. I have to think about this. I see the biggest advantage of tying the N and G together at terminals of it always being in place and one less thing to loose.

            Am I to understand having an Edison Plug on the same circuit provides the bonding no matter which outlet it's plugged into?

            Norris
            2019 Ford F-150 Lariat 2WD SuperCrew , SoftTopper, Blue Ox SwayPro hitch with 1000lb bars, Billstein 5100 series rear shocks, Hellwig rear swaybar
            2020 Imagine 2600RD with Road Armor + wet bolt suspension, Yakima Longhaul Bike Rack, MicroAir EasyStart 364 for AC, Lion Energy 100amp X2
            Amateur Radio Call N9XGZ
            FMCA # 489460

            Comment


            • #7
              I'm on the same page a Jim, but I'd go heavier than 16 awg. Places like Home Depot usually have a heaving gauge that contractors use.
              Curtis, Christine, Cole, and Charlotte
              2007 Chevrolet Silverado Duramax LBZ, CCLB
              2020 Momentum 351M
              2004 Essex Vortex

              Comment


              • #8
                Like this:

                https://www.amazon.com/Voltec-04-000...2647730&sr=8-5
                Curtis, Christine, Cole, and Charlotte
                2007 Chevrolet Silverado Duramax LBZ, CCLB
                2020 Momentum 351M
                2004 Essex Vortex

                Comment


                • #9
                  Originally posted by Running from Gnats View Post
                  I just received a 1KW Renogy inverter and have a floating ground. I'm looking at building an Edison plug so not to be blocked by the onboard EMS. However this model has only 1 AC outlet. I'm wonder if I build an adapter with both a male (for the inverter plug) tied to a female plug (for the AC cord)? My thought is if I can do this, I could then use my12 gauge extension cord to plug into a 30amp to 15 amp dogbone at the AC trailer hookup.

                  If this could be done, do I wire one side normally and the other as the N-G bond? I don't know if making this adapter would work or cause damage.

                  Or can I do the G-N bond on the outlet itself and just plug in and go?

                  I'd prefer not to have return the 1KW unit and upgrade to the 2KW unit for $100+ more. The 1KW fits best into the area I would to mount it.

                  Hopefully someone has been through this type of issue and can provide a bit of guidance.
                  This may be a stupid question(s) so please forgive me. I see from the manual on the Renogy site that your inverter has a spot to attach a ground (neutral) wire. Did you attach this to a bare metal spot on the frame? Wouldn't this keep you from having a "floating" neutral?
                  Norm & Karla
                  2019 Imagine 2150rb
                  2018 Chevrolet Silverado 2500HD
                  2016 - 2018 Hobie Kayaks

                  Comment


                  • #10
                    Originally posted by Oregon Fun-Guy View Post

                    This may be a stupid question(s) so please forgive me. I see from the manual on the Renogy site that your inverter has a spot to attach a ground (neutral) wire. Did you attach this to a bare metal spot on the frame? Wouldn't this keep you from having a "floating" neutral?
                    Neutral and Ground should only be bonded at the source of the electricity. This is how the (safety) ground can carry the current back to the source if there is a break elsewhere in the circuit. You would not want N & G connected through the generator wiring when you are on shore power.

                    Rob
                    Cate & Rob
                    (with Border Collies Molly & Angel and their kitty Gracie)
                    2015 Reflection 303RLS
                    2014 Ecoboost F150 with Heavy Duty Payload Package
                    Aylmer, Ontario, Canada

                    Comment


                    • #11
                      Originally posted by Cate&Rob View Post

                      Neutral and Ground should only be bonded at the source of the electricity. This is how the (safety) ground can carry the current back to the source if there is a break elsewhere in the circuit. You would not want N & G connected through the generator wiring when you are on shore power.

                      Rob
                      Have you been reading your handbook?
                      Curtis, Christine, Cole, and Charlotte
                      2007 Chevrolet Silverado Duramax LBZ, CCLB
                      2020 Momentum 351M
                      2004 Essex Vortex

                      Comment


                      • #12
                        Originally posted by Cate&Rob View Post

                        Neutral and Ground should only be bonded at the source of the electricity. This is how the (safety) ground can carry the current back to the source if there is a break elsewhere in the circuit. You would not want N & G connected through the generator wiring when you are on shore power.

                        Rob
                        Oregon Fun-Guy

                        Rob - I believe this question is for the DC ground on the case of the inverter. From the Renogy manual:

                        "Grounding

                        The Renogy Pure Sine Wave inverters come equipped with a grounding lug for appropriate grounding to earth ground or to another designated ground (For example, a metal frame of an RV). The connections to ground must be tight and against bare metal. Whether using the inverter in a mobile application, such as an RV or in a building, grounding is highly recommended. The recommended wire size for grounding is 10 AWG insulated copper strand wire. For more information regarding grounding, users and/or installers must consult with the Local and National Electric Codes (NEC) for more specific grounding regulations and suggestions as they can change per scenario."

                        On my 2,000W inverter, I ran 10AWG copper wire to the frame. I scraped off the paint and screwed the wire to the frame to provide the ground.

                        Jim
                        The moderators for this site are not GDRV employees, but we do own GDRV products.

                        Jim and Ginnie
                        2017 Reflection 297RSTS

                        Comment


                        • #13
                          I contacted WFCO who supplies the converter/charger for our Imagine 2600RB. I asked if they had a unit which is 1) multi type charger (flooded/AGM/Lithium) and 2) if so, could the converter/charger be a direct swap without changing out the entire power center.

                          Here is the answer they provided:

                          "We are coming out with a converter that will charge both types of batteries shortly. You would have to replace the entire power center though."

                          They did not give an estimate on timing or costs in the email.
                          Last edited by Running from Gnats; 03-03-2020, 10:59 PM.
                          2019 Ford F-150 Lariat 2WD SuperCrew , SoftTopper, Blue Ox SwayPro hitch with 1000lb bars, Billstein 5100 series rear shocks, Hellwig rear swaybar
                          2020 Imagine 2600RD with Road Armor + wet bolt suspension, Yakima Longhaul Bike Rack, MicroAir EasyStart 364 for AC, Lion Energy 100amp X2
                          Amateur Radio Call N9XGZ
                          FMCA # 489460

                          Comment

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