Hello,off the bat this is my first rv (5th wheel). It is a 88 automate. When I Have my trailer plugged into shore power I had my A/C running on hight for about 4 hours and it blew the A/C breaker in the trailer. The plug to was really hot. Is this normal? The breaker in the trailer might be starting to get weak. The wife and I are hoping to buy a new trailer down the road. Are the new trailers more efficient on drawing power these,days? Thanks

It's normal if you're drawing too much power. Other things can use lots of power, like your converter and water heater. Extension cords don't help either. And your plug must have good solid clean connections.Is this in a CG? Many CG power systems are inadequate to handle lots of folks running air at the same time. And their pedestal connections are old and corroded.

Any time you get a hot connection it comes from that particular part having a high resistance connection compared to the rest of the circuit.So, the cause can be in your part, or in the part that you are plugged in to. Among the possibilities are: 1)the wires in your plug are not connecting well to the actual connecting spades in your plug. 2) the spades on your plug have been overheated before, and have lost their conductivity.On the other side, in the receptacle, the grippers that grip your spades may have overheated, and so it is like a loose connection.. or the wires to the receptacle may be loose.Both of these conditions may be present at the same time even. An electrician with a couple of meters can determine the actual problem.

Was this running 120VAC from your house with an extension cord and a RV30A-15A adapter etc....Roy Ken

You have to have 30 amps source or more to run the air conditioner. If not things get hot and will pop the breaker. My personal experience from home, LOL. Otherwise get your 5th wheel checked out.

It is high resistance where the heat is, nothing more, nothing less. You need to determine if it's your plug or the outlet. Most often the outlets are ruined by those folks plugging and unplugging without turning off the breaker.

Electrical question | Good Sam Community

Artum_Snowbird
Explorer
Jul 17, 2015
Any time you get a hot connection it comes from that particular part having a high resistance connection compared to the rest of the circuit.

So, the cause can be in your part, or in the part that you are plugged in to. Among the possibilities are: 1)the wires in your plug are not connecting well to the actual connecting spades in your plug. 2) the spades on your plug have been overheated before, and have lost their conductivity.

On the other side, in the receptacle, the grippers that grip your spades may have overheated, and so it is like a loose connection.. or the wires to the receptacle may be loose.

Both of these conditions may be present at the same time even. An electrician with a couple of meters can determine the actual problem.
2oldman
Explorer II
Jul 17, 2015
It's normal if you're drawing too much power. Other things can use lots of power, like your converter and water heater. Extension cords don't help either. And your plug must have good solid clean connections.

Is this in a CG? Many CG power systems are inadequate to handle lots of folks running air at the same time. And their pedestal connections are old and corroded.

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