2016 Greyhawk 29V Tripping

[dbldogheart]

My rv is tripping both my 20 amp & 30 amp. Just had it at repair place because TVs weren’t working. When he plugged it in there, they worked just fine. He said he checked all the wiring and all checked out. B4 we took it in, it was not tripping, just the TVs weren’t working, I’m baffled. Any help?

 

[markb5900]

Are they tripping immediately upon plugging the coach into shore power?

 

[pconroy]

What's tripping where? The house breakers or the breakers in the RV? I'm guessing the house/shore breakers.


What's on in the RV?


What are you plugging the RV into? An extension cord and then to a house outlet?
If so - how long is the cord and what gauge?


What else is on the house circuit that's on?
Do you have a multimeter with an AC ammeter?

 

[dbldogheart]

Yes, it trips night away. Power comes on for a second, then trips (and yes trips the shore power). Nothing is on in the RV

 

[dbldogheart]

Also, we had an electrician put our 30 amp in and it has always worked great. It is not plugged in with an extension cord. We’ve tried with a different cord with same result

 

[pconroy]

Yes, it trips night away. Power comes on for a second, then trips (and yes trips the shore power). Nothing is on in the RV

RV is completely off. And as soon as you plug it into the house, the house breaker trips?


You've got a short someplace would be my guess.
Try another recepticle, another circuit.
Another cord.


You're using a 30A to 15A adapter?
If it's a cheapie, those melt quickly. I know that because I have a few blackened ones.

 

[pconroy]

It is not plugged in with an extension cord. We’ve tried with a different cord with same result

So -- if you plug the RV into the 30A house receptacle - it's fine?


What do you mean - "not plugged in with a cord" and "we tried a different cord"? That's confusing to me.

 

[dbldogheart]

We have a separate 30 amp hookup that is only for the RV. And no it is NOT fine when plugged into the 30amp, it trips immediately

 

[markb5900]

Do you know exactly what the shop did?
I would start troubleshooting there.

 

[dbldogheart]

He said he didn’t do anything except test the wiring

 

[Camper_bob]

Will it run on generator? If not, the transfer switch is the first place I would look.

You definitely have a short somewhere. Could be in the junction at the shore power receptacle in that compartment, Could be at the shore power plug on the coach, could be a short up by the transfer switch.

You said you tried different cords with the same result, so I'm thinking probably not the cord itself.

Also, when you try, and the breaker flips, something somewhere is melting/burning a little more each time.

My coach came with the shore power cable hard wired. I modified it to install a pigtail there so that I could completely remove the 30-50 ft shore power cable and store it somewhere else, plus not have to run it though the little mouse hole. When I did that, I replicated Jayco's installation and used standard wire nuts. One of them came loose and created a short in that J-box, and I could have had a serious problem. Symptoms when that happened were similar to yours.

 

[Camper_bob]

He said he didn’t do anything except test the wiring

If he tested the wiring with a volt meter, that really doesn't tell the whole story. Even a largely compromised connection will still pass voltage, but when you put 30A on it, it will fail.

The bigger question is whether the shop put the coach on their shore power and checked it out. If yes, then that narrows down the problem to the shore power side outside the coach.

 

[dbldogheart]

With generator, everything working fine! �� calling electrician Monday morning!

 

[Camper_bob]

With generator, everything working fine! �� calling electrician Monday morning!

There's a short in the shore power line. Those transfer switches go out all the time. Jayco does not have a good record with solid wiring connections, so wire nuts fall off all the time.

There should be only 2 "connections" in your shore power supply. One is right at the back of the shore power compartment, and IMO is most likely where your problem is. There is a J-box back there, take the cover off and take a look (couple of phillips screws hold on the cover). If that's where it is, it should be obvious with scorched wires, and perhaps a loose wire nut or two.

Transfer switch is the other, and likely under the bed. Again, remove the cover, and if there's a short in there, it should be pretty obvious.

The chances of there being a short between those places are pretty slim IMO, but I guess it is possible.

Please come back and update the thread with your electrician's findings. Hopefully he won't look too close because most electricians' heads would explode looking at the shoddy wiring in RVs.