Forum Discussion

tlaffourtit's avatar
tlaffourtit
Nomad
Sep 08, 2014

inverter, batteries,converter,tranfer switch, etc.

We own a 2015 thor ace 30.2 motor home. We are installing a 5000w pure sine wave inverter using 870ah batteries(12v). We are using 12v batteries because I was given them for free and they are deep ce...
shooted's avatar
shooted
Explorer
Sep 09, 2014
tlaffourtitkway wrote:
2oldman wrote:
tlaffourtitkway wrote:
I don't know the size cable needed for 12v
What does the manual say? Where did you pick up this inverter?
manual does not have a wire size. i will run 2 #1 cables. it does have 2 battery and return post plus a chassis ground.

To make use of the full available 5000 watts, larger cables would be required. My quick math indicates 400+ amps and would require 4/0 wire. Is 5000 watts necessary?

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,341 PostsLatest Activity: Dec 07, 2025