big buford wrote:
Xantrex manual
Starting on page 2-7 they talk about grounding the system and also ground fault protection :h
If somebody could put that in layman's terms it would be much appreciated. lol, or how I need to hook mine up!
The controllers are designed for residential and commercial use and need to meet the national electrical code standards. Forget about the grounding with an RV as it does not apply.
It is easier to have a way to switch power off from the C-box and also to the battery bank from the charge controller as you hook up the wires. Once the panels are in the sun they are putting out a charge and a shorting of the controller's connections is likely to damage it and the damage is not covered by the warranty. I used Blue Sea switchable circuit breakers to kill two birds with one stone - saves space when wiring everything in place as well.
Be sure that the Xantrex bus will handle the gauge wire that you are running from the C-box and to the batteries. Many controllers will not take 4ga or even 6ga and you may need to add jumper wires. With residential systems the voltages are higher with more panels connected in series and so the wire gauge can be less than with your setup and its relatively low voltage outputs from the panels.