Battery Disconnect/Selector Switch

Regardless of the type, brand, design of disconnect switch mounted at the batteries, has anyone had reliability issues with them?  I wonder if having one introduces a weak point of failure when they become dirty and corroded.  Then they would create a problem under a heavy load condition, right?  I admit it would be convenient to have one, but worry about long term reliability.

I had the same Blue Sea rotary disconnect switch on an earlier camping unit for four years without any reliability issues.  I guess time will tell on the new one installed on my PC. It went into service in July of last year.

Sailor35,
I connected the battery to #1 and solar to #2 (from a practical perspective the same as what you said). The #1 + #2 position allows the coach to run off the battery and solar as well as the converter and engine.  The #1 position runs off the battery, converter, and engine. 

I typically leave it in the #1 + #2 position.  If the PC is parked and not being used and no shore power connected even a small amount of sun keeps the batteries fully charged. 

Do the PCs come with a battery disconnect/selector switch so one may disconnect, select or combine house and chassis batteries?  Also, is there master control panel for DC and AC breakers for turning various power demands off or on to cut down on parasitic electrical draws.  Again many thanks

I have a 2015 model, in it, there is no chassis battery disconnect but there is an isolator that prevents the house batteries from drawning down the chassis battery.   There is a switch by the side entry door that you can turn off that disconnects MOST loads from the house batteries.   I forget exactly what is left attached, but I believe the propane/carbon monoxide sensor stays connected.   

Therr is a DC/AC breaker/fuse panel in all the Phoenix models.

Also.. The entry step has a lead from the ignition and chassis battery so the step will still retract if you turn the ignition on.

I installed a knife switch (camping world and lots of other places sell theml to disconnect the chassis battery during storage.   For the winter, I remove the house batteries and keep them on a battery tender all winter long.

If i need to 'visit' the RV during the winter, I close the knife switch on the chassis battery, start the engine and then can run the lights, slide or start the generator as the alternator will provide power... Since the alternator output provides power to both chassis and house batteries, it's equivalent to having the house batteries installed (as noted.. Over the winter they are removed).

I hope that answers your concerns.