Forum Discussion

oldmattb's avatar
oldmattb
Explorer
Jun 25, 2013

Xantrex inverter question

I recently added some wiring for our new macerator. Taking the wires from the electrical bay would have been over 35 feet of wire, and lots of routing around the engine and radiator. I took the power from the battery inputs on the inverter, which reduced the wire run to less than five feet.

I dutifully turned off the main power disconnects - inverter still on. I disconnected the house battery - inverter still on. I then disconnected the starting batteries - inverter still on. I disconnected the shore power - inverter still on. All that was left was a small solar panel to keep the batteries charged.

Was the panel enough to keep the inverter working? Does the inverter have some big capacitors inside that will keep it active with the power off? Am I forgetting something obvious?

Job is done, but I want to know more.

Matt B
  • If the solar is putting out sufficient voltage then yes, the inv. would see this and be "on". Of course there's no real current available so it's going to choke if anything is turned on.
    The are not sufficient capacitors in the inv to keep it going for any length of time.

    So either your solar is keeping the inv. awake or it's wired around the battery disconnects.
  • Once you disconnect the inverter batteries to the Xantrex. It will stop.
    On some rigs they have the following individual battery banks:
    Chassis
    Coach (House)
    Inverter.

    Other rigs
    Chassis
    Combination Inverter / Coach(house).

    I guess you need to read up on your coach and determine how many battery banks you have. Did you disconnect the battery lead going to the nverter?
  • I'm not real clear on the question here, but yes, any solar input will keep the inverter on, provided they're somehow connected to its input.