Forum Discussion
professor95
Jun 21, 2011Explorer
Dan,
Having a big MH rather than a towable with a PU makes carrying the extra batteries much easier.
The only thing in you description that won't work is the #4 cable and the 150 amp fuse. If you get a large inverter you will need a larger gauge copper cable from the battery to the inverter.
I have a 3,000/6,000 watt MAXX MSW inverter that is currently in storage. I was never able to use it at the full potential capacity due to inadequate cable size and too much cable length. Since I really didn't need 3,000 watts I opted to go with a smaller inverter and thus smaller cables and batteries. I now have two 127 amp hour AGM 12 volt batteries in the fifth wheel feeding the 1200 watt inverter with #2 copper welding cable. Please believe me and understand that the wiring needed for a larger inverter is not a place to take shortcuts. I've been there and done that. Your batteries sound promising but your bus to tap power and cables must be capable of handling as much as 600 amps of current intermittently and 300 amps continuous without any significant voltage drop. Anything over 2/10 of one volt is significant.
Good luck. I am anxious to learn how your project turns out.
Having a big MH rather than a towable with a PU makes carrying the extra batteries much easier.
The only thing in you description that won't work is the #4 cable and the 150 amp fuse. If you get a large inverter you will need a larger gauge copper cable from the battery to the inverter.
I have a 3,000/6,000 watt MAXX MSW inverter that is currently in storage. I was never able to use it at the full potential capacity due to inadequate cable size and too much cable length. Since I really didn't need 3,000 watts I opted to go with a smaller inverter and thus smaller cables and batteries. I now have two 127 amp hour AGM 12 volt batteries in the fifth wheel feeding the 1200 watt inverter with #2 copper welding cable. Please believe me and understand that the wiring needed for a larger inverter is not a place to take shortcuts. I've been there and done that. Your batteries sound promising but your bus to tap power and cables must be capable of handling as much as 600 amps of current intermittently and 300 amps continuous without any significant voltage drop. Anything over 2/10 of one volt is significant.
Good luck. I am anxious to learn how your project turns out.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,211 PostsLatest Activity: Mar 08, 2025