I have a 2000 watt invertor/charger since I bought it new in 1994. It is a 30' Monaco Dynasty 230hp 3060 six speed Allison. My discovery recently was when the invertor is on and I turn off the 12volt system it spikes to 130 amps. This does not happen when the gen is running or when plug into 50amp. I never notice this before am I missing something. I replaced the solenoid, but it made no difference. The invertor is working fine when charging batteries, either by gen or plug in to 50 amp.It has been rebuilt two times since I have had the RV. Any suggestions would be appreciated. Thanks in advance, Larry
With the Inverter OFF and NO 120 or Genset power, turn the 12 volt battery system OFF. IF you have NO power to the Inverter(It will not come on or show a display, your Inverter Battery cable is incorrectly wired. The MAIN 2/0 red battery cable from the coach batteries to the Inverter should be direct from the Battery positive post to the 250/300 amp 12 volt fuse and then to the Inverter/Charger. You NEVER have the main 12 volt battery cable to a Inverter/Charger go thru any type battery disconnect, UNLESS that battery disconnect is a MANUAL shut off and on rated at least for 350 amp current. But, the general rule is NO disconnect between the Battery positive post and the Inverter. I will assume the spike is caused by the loss of certain 12 volt feed current. Question, WHY would you turn the disconnect OFF when you are running the Inverter?????? Kind of like driving 30 mph in your Car and you decide to turn the Ignition key off to see what happens. Doug
Thanks Doug, I have not changed any wiring since system was new. I think I understand what you are saying. I have never turned off the 12amp disconnect before so I guess everything is wired right. When I do turn off the 12amp with the invertor off, and then turn it on that is when it spikes. So I will leave everything on. We boondock 95% of the time so I have been turning off the invertor/charger at night to conserve the house batteries. Someone told me to this to conserve house batteries. I guess being 77 I am getting anal. Thanks again. Larry
I have noticed that cheaper volt meters read MSW power from inverters less accurately than PSW or shore power. I have a Xantrex 458 that reads high (130 -135)especially when turning on or light or no load.