stupid question but i need to know

Discussion in 'Camping at Disney World' started by RG86VET, Jun 21, 2009.

  1. RG86VET

    RG86VET Earning My Ears

    May 1, 2008
    we took the camper out, everything was going fine till we had to power, at the connection box the service disconnect breaker tripped, we had the a c on and i also had the electric water heater on. the guy on the next site helped me out and with his volt meter the plug for the 30 amp spot at the post showed 113 volts, the 50 amp showed 225 volts, i have a 30 amp system and my plug when we unplugged it was hot hot hot , no breakers in the camper were tripping just the service disconnect at the post, my question is should that 30 amp plug on the post been showing 120 volts and since it was showing 113 is 7 volts to low cause the breaker to trip and the plug get hot????
    i have a 2003 prowler 25 j all i know the sticker is showing the water heater uses 11 amps not sure on the a c any idea ?????????:cool1:
  2. disney4dan

    disney4dan DIS Veteran

    May 16, 2007
    It sounds like you had a lot of current drawing, but it's hard to tell.

    30 amps is a pretty small service for both an electric hot water heater, AC and probably all the incidentals that you were running (fridge, microwave, power inverter for the lights).

    We have a 30-amp connection for a trailer that only has gas for hot water - so that may have something to do with it.

    PS - 113 volts is a little low, but within range. Most appliances and households can vary down to 110 volts with little problem. I have seen electric motors pull the voltage down to less than 100 volts before we start having problems.
  3. Avatar


    to hide this advert.
  4. Shan-man

    Shan-man ¿sɐɯʇsıɹɥɔ lıʇ, sʎɐp ʎuɐɯ ʍoH

    Aug 12, 2008
    If your plug is the type that you can unscrew the cover and open up, I'd do that and make sure the wire clamps are tight and that there is no fraying in the wires which could cause sparking and require the remaining wires to carry all the current and heat up. 113 volts shouldn't be a problem at all, but my guess is that the voltage is ramping up and down. When voltage goes low the amps required for the same work goes up and amps equal heat. You might want to see what the volts read when all your neighbors ACs click on. If you voltage is swinging below 107v I would not want to use electronics like computers and TVs (or even sophisticated microwaves), though ACs and water heaters should be fine.
  5. FlaFortCampster

    FlaFortCampster DIS Veteran

    Nov 29, 2008
    What I do to avoid potential problems is use most of the plugs provided. The 30 amp takes care of AC, frig and lights. I dedicate a cord for microwave and coffee maker and TV, cord for other frig that holds the good stuff and one for laptop. Really, really roughing it. :lmao:
    This way everything runs smoothly. Just a thought.
  6. Tnbob

    Tnbob Bob and Kathy

    Oct 2, 2008
    I've had the same problem on my old TT. I had the air on and the elec hot water heater and when I touched the plug at the connection I wondered why it hadn't melted it was that hot. I never again used the Air conditioner and the electric water heater again at the same time on that one or my present TT. I use the gas on the water heater just for peace of mind except when the Air isn't needed and only after the gas has heated the water and the electric is just keeping it hot not heating the whole tank.
  7. LarryJ

    LarryJ Dedicated FW 1600 "Looper"

    Jul 7, 2007
    First even tho one should assume you are talking about the sites at FW since this is what this forum is for, I just doubt this was where you had problems since all sites I know of have 50A service and if you were having power problems I would think a call to the front desk would get you all the help you would need. Thus I will assume this was not at FW and my comments below are for that scenario.

    While this is only a guess you might have two problems going on here. The 113 you saw which I assume was w/o you being plugged in might be a tad low, but it will drop even more under a load, but as long as it stays above about 105 volts everything should work. The problem is that the ability of a particular CG power system to provide sufficient voltage can vary even site to site and can depend on who is ahead of you and is running what since many CGs daisy chain their electrical pedestals and it's sort of like a long watering canal where farmers all draw water from it. If too many between you and the water source for the canal are using too much water you won't have enough.

    1. A lot of 30A receptacles on the power pedestals basically become wore out because they are loose and can cause heat problems due to the "loose"connection between your power cord and the pedestal. Just drawing 25 or even 30 amps should not produce the heat you are describing IMHO with a good connection.

    2. I have no problems running my A/C and WH on electric along with all my normal lighting, TV etc. When these two high amperage items are running I'm drawing between 25 and 28 amps. This means I can't use any other high amp items like the microwave, hair dryer, etc. You were obviously drawing more power than the circuit breaker on the pedestal could provide and again the reasons why the pedestal circuit breaker only was disconnecting and not any of your breakers in the trailer could be due to a couple of reasons. One there is a slight variance in exactly when circuit breakers will trip and over time just like the 30 amp receptacle can get worn out.

    Now for solutions or ideas to consider.

    1. Because the newer A/Cs, refers, and electronics can be damaged by low voltages and CGs can vary so much in what they can provide, I installed an EMS system like the one EMS-HW30C. The remote display shows volts, Hz, Amps being drawn, and any fault codes in a rotating fashion so I know exactly how many amps my drawing all the time. We know if we plan to use the microwave or any other high amperage draw device we simply turn off the WH if we are using the A/C.

    2. For the inherent potential problems with the 30A receptacle and circuit breaker at the pedestal I always try and get a 50A hookup and before I converted my trailer to a dual 30A service, I would use a 50A to 30A dogbone and plug in my trailer cord to that. The 50A pedestal plugs are not used as much as the 30A, are designed to provide 50A of 110V power between each hot and neutral and you're only using 60% of the designed capacity. The 50A breaker is only an issue if something goes wrong between the pedestal and your power distribution in your trailer since everything after that is protected by the circuit breakers in your trailer and you won't draw more than 30A because of what you are running in your trailer. Your trailer breakers will trip before the pedestal breaker does. I have never heard of an issue or problem using the 50A to 30A dogbone and you should have one anyway IMHO.


Share This Page