Electrical problem

[Citrus breeze]

When I plug my Oliver into shore power, it blows the circuit on the shore socket!  Suggestions?  I have checked the GF under dining table’s right side.  I have checked that no Oliver circuit breakers were tripped.  My front hydraulic lift is working on and off.  Possibly there’s a short in there.

 

[Mike and Carol]

Before you connect your power cable to the trailer check each of the three lugs on the trailer to ensure they are tight.  I had a loose one and it ended up melting the connections on both the cable and the trailer.  If they are tight I would track the cable where it enters the trailer (under the back dinette seat) and start checking connections along the path to ensure none are loose.  Mike

[jd1923]

1 hour ago, Citrus breeze said:

When I plug my Oliver into shore power, it blows the circuit on the shore socket!  Suggestions?  I have checked the GF under dining table’s right side.  I have checked that no Oliver circuit breakers were tripped.  My front hydraulic lift is working on and off.  Possibly there’s a short in there.

It "blows the circuit on the shore socket." What exactly blows? Does the 30A breaker on the pedestal blow? If so, you have a dead short in your shore power cable, the receptacle, or in the EMS (given you have one, more info below).

The GFCI is after the fact. If wiring past the GFCI get a short, it will trip and all outlets are after a 15A circuit breaker. The jacks are 12VDC, so running off battery. If your jack has a short the yellow-jacketed 30A 12VDC fuse will blow. These items cannot be your issue.

Do you have an EMS with a display? The display might be in the attic. If so, when you plug into shore power check the display for an error code. The display shows 4 readings for a couple seconds each. It shows voltage present and Hz, amperage being used, and error codes. If you see E0, it means no errors. If you have anything but E0, you have an issue with incoming power. The error code definitions are on the cover of the EMS. This is a picture of our EMS and our display (I installed ours in the trunk, readout in picture is showing 123V actual).

We'll know more when you answer my first question and your EMS status...

Edited 2 hours ago by jd1923

[Steph and Dud B]

What are you plugging into? I assume it's a campground 30A receptacle, right? If it's only a household outlet you could easily be overloading it with normal Oliver things like the water heater, fridge, battery charger, etc.

But this did happen to us once at a campground. We had a loose connection at the water heater. Don't know why it blew the 30A breaker at the pedestal and not the 20A breaker inside the trailer, but it did.

Anyway, check everything mentioned above first. If you don't find anything wrong in the shore power connections as mentioned above try this: while unplugged, turn off every breaker in the Oliver breaker box under the dinette, then try plugging in again. If you blow the pedestal again you've got a short in the cable connections or EMS. If the pedestal breaker didn't blow, turn on the 30A main Oliver breaker. If that's ok, keep turning on Oliver breakers one at a time until you find the one that's tripping the pedestal.