Thanks again guys for all the suggestions it was awesome to know people still care enough to help!!!
3 issues for rv
1) inverter shuts down under load! This has been remedied through taking house batteries out.
a) charged them up with my schumacher charger
b) water level was above plates, however I did add water to the line
c) checked all batteries with hydrometer, passed with flying colors
d) utilized a load tester and batteries passed with flying colors
e) it only took 1 hour of charging to bring it up to snuff
What I have learned is exactly what all you have stated, voltage don't mean a thing! What matters is the load it can take and how it recovers from that load!
2) Onan generator still shuts down under load! This is still an issue
a) I have not yet charged the chassis batteries due to the fact I was
stressing out over the inverter!
b) So maybe the Onan needs the chassis battery fully charged! This will
be tested tonight after work, Darling wife will charge the chassis
batteries today while I work!!!
c) I did pull dtc codes on the Onan and it reads code#31
d) Now, I need advice on how to diagnose Onan concern?
e) Note just a thought: fuel gauge does read just under half, I hope
maybe that is the problem, but highly unlikely due the fact it has
to be at a quarter tank from my understanding!!
Again, thanks everybody for your help thus far, just need more wisdom for the next few steps!