Setting up new Sungoldpower 48v Dual Phase Inverter in RV. Do not want to connect directly in the 5th Wheel system, but instead want to connect a 50 amp outlet to the inverter so I can manually plug in the 50 amp shoreline. Basically replacing my current generator with the inverter powered by panels and battery (separate from the internal batteries in the RV). Question, do I need to ground the inverter and/or the output service to the 50 amp outlet? If so, how should I do this? Appreciate any input.