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laplatarosa's avatar
laplatarosa
Explorer
May 27, 2018

Surge Guard Plus Model 40250-RVC

I have a large DP with an installed Surge Guard Plus Model 40250-RVC Automatic Transfer Switch with RV Power Protection 120/250V 50A, 60Hz.

The coach does not want to hook-up to a 50amp , receptacle that is showing L1 - 124v, L2 - 127v, LI to ground & to neutral - 124v, L2 to ground and to neutral - 127v. L1 to L2 - 252v.

The generator connects and works fine. Also the auto Genset start works as designed.

I CAN connect to a 30 amp receptacle via a dog-bone adapter on the L1 -124v side of the pedestal.

The specs for the Surge Guard say below 132v range is OK.

Any ideas why I cannot connect to the 50amp power.

I'm using the same cord for all connections.

Thanks in advance for all ideas.

LaPlataRosa
Class A
  • jplante4's avatar
    jplante4
    Explorer II
    May 27, 2018
    No need to post in multiple places. The post in Tech is the correct forum for this.
  • Jim's avatar
    Jim
    Explorer
    May 27, 2018
    laplatarosa wrote:
    I have a large DP with an installed Surge Guard Plus Model 40250-RVC Automatic Transfer Switch with RV Power Protection 120/250V 50A, 60Hz.

    The coach does not want to hook-up to a 50amp , receptacle that is showing L1 - 124v, L2 - 127v, LI to ground & to neutral - 124v, L2 to ground and to neutral - 127v. L1 to L2 - 252v.

    The generator connects and works fine. Also the auto Genset start works as designed.

    I CAN connect to a 30 amp receptacle via a dog-bone adapter on the L1 -124v side of the pedestal.

    The specs for the Surge Guard say below 132v range is OK.

    Any ideas why I cannot connect to the 50amp power.

    I'm using the same cord for all connections.

    Thanks in advance for all ideas.

    LaPlataRosa


    It's probably sensing a problem with the neutral or ground. I believe if it measures any current flow in the neutral wire, it won't allow power to go to the RV.

    See if you can use a nearby 50 amp outlet (assuming you're in a RV park).

    PS I had the opportunity to open a Surge Guard device a few years ago to check it out and I wasn't impressed by their quality. Don't discount the possibility that you have a bad one.

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