1978 Dodge AMCL, Can I start RV while plugged in?

[satorizero]

Basic newbie question 

I have both batteries connected of course, and the main 120v supply (called shore power?)
Can I start the RV up plugged in? I did before, but I wasnt sure if its 100% ok

[Horst]

Not a good idea.
I can't remember exactly why, but that's what an old time member told me many years ago.

[Toedtoes]

I think the biggest reason, which sounds stupid but many have done it, is that it makes it that much easier to drive off without unplugging.   

From what I've read, running the generator while plugged in is a bigger no-no than starting your engine while plugged in.  Something about them conflicting.  But since I don't have a generator, I haven't studied the idea.

With new RVs, it doesn't seem to be a big problem to start the engine while plugged in.  Do a quick search and you'll see that many need to engine battery active in order to adjust their jacks/stabilizers/levelers.

I've done it with mine a couple times when I was simply checking things out, but I don't do it on a regular basis.  I'm a bit anal about following the same procedure every time so I don't forget something.

[Horst]

I'm an electrical dunce.
But I seem to remember it had to do with over-loading some switch.
When your Clipper is running, you are charging your house batteries.
When you are plugged in, you are also charging your batteries.
Maybe it was something to do with that?
I don't know...long time ago.....

[satorizero]

See that what I was wondering guys, if there might be a conflict...

Thanks for your replies so far.

I asked because its kind of a hassle for me to go unplug it everytime I do startups...

[Toedtoes]

If you have it plugged in a lot, you want to put in a cutoff switch to the house battery.  Because you are charging your battery whenever you plug in the shore power, you can hurt your battery it you have it plugged in for long periods.

Benefit:  If you put in the cutoff switch, then starting the vehicle while plugged in shouldn't hurt because you've basically disconnected the house battery.

[satorizero]

I like the idea of a cutoff switch and plan to implement one

But, the charge controller is there to prevent over charging, no?

[Toedtoes]

The charge controller should work for the most part.  But the cutoff switch makes it pretty much foolproof.

[satorizero]

Ok thanks