2008 Monaco Dynasty Squire

[DragRacer2]

When the coach is plugged in to shore power or with the generator running the system shuts down intermittently. The display for the Charging system/Inverter shows "Overtemp". It shuts down all 110. They all turn off, the fridge, microwave, all the 110 outlets, etc. The AC units fans keep running BUT the compressors kick off.
I read thru the manual but it only talks about the generator overtemp, but this happens even when plugged into shore power.
Any Ideas?

[gsgriffin]

Check your voltage while running things. It should be around 115. It might dip a little lower for a few second. The lower the voltage drops, the higher the amperage goes up for everything. A device will try to get the same watts that it needs to run. Watts is volt*amps. So to get the same amount of "power", the amperage goes up.

Wiring size is based on amperage. Think of it as the amount of water that a hose has the capacity to carry. Voltage is the speed the water is flowing. The bucket at the end of the house being filling in 1 minute is the watts. If the voltage (speed of the water) goes down, the amount of water flowing through the hose tries to increase (without increasing the speed). The hose eventually balloons and stretches until it burst.

In electricity, the stretching of the hose is the size of the wire. The stretching of the hose is seen as heat in the wire. The hotter the wire gets, the more resistance it creates (backpressure), which in turn tries to bring more amperage. This feedback loop is what can many times cause wires to overheat and then melt and then ground out on each other or something they are touching.

All this to say, if you are having overheating, either you are drawing too much through or their is a problem with wiring. See if you voltage is dropping when you apply loads.

I've had a problem a few times that went all the way back to the shore power connector plug. The wires in there got loosened up over time and began to have a poor connection, which resulted in voltage drop