I had been waiting to install my brand spanking new Xantrex 1000.
I had thick 2GA cables made and soldered the lugs. I drilled my hole and ran the cables to the battery, less than 4 ft away. I hook up all the cables, power it On, use a power drill to test - all is well, works like a charm.
Life was good.
I then re-read the instruction manual where it mentions clearly to connect the ground screw at the back of the case to a good ground, oops forgot to do that
Well long story short when I reconnected it .... POOF and it starts smokin' , dead as it could be.
I then realized that when installing in an RV, the ground/frame is also the NEG-, since the battery is connected there.
I did call the company, no warranty offered for my goof, ah well. Been there, done that.
Be warned, don't do what I did...