Forum Discussion

hertfordnc's avatar
hertfordnc
Explorer
Feb 21, 2023

Older Xantrex Inverter transfer switch function- How to?

I have a 10 yearold ThermoKing/ Ingersoll 1800 watt inverter (Actually made by Xantrex)

It's a modified sine wave but it works great.

I have no paperwork but I've read that it has transfer switch function.

There are knockouts on the front and a bus under the cover for input and output (120VAC not the DC input)


I can't find any info on how to wire it. I have some big AGM batteries and I'd like to make this into a UPS for freezer. If I can get the transfer switch function to work.

EDIT: It looks like and probably isTHIS ONE
  • Do have the model number & year of mfg from info plate, to post here or maybe a pictures of the inverter outside and inside, some kind of info that members can compare to a xantrex unit in their rv,
  • MrWizard wrote:
    Do have the model number & year of mfg from info plate, to post here or maybe a pictures of the inverter outside and inside, some kind of info that members can compare to a xantrex unit in their rv,


    thanks. edited.
  • Can you post a photo of it?
    I've never heard of that model inverter being made by Xantrex.
  • deltabravo wrote:
    Can you post a photo of it?
    I've never heard of that model inverter being made by Xantrex.


    I posted the link to a current Amazon ad. I'm surprised they stall have it as i think it came out ten years ago. Looks LIKE THIS
  • The 120 input is behind one of those round knockouts. The OUTPUT is the front GFI receptacle. You remove the receptacle and wire the output to those receptacle wires. The original install kit came with a blank plate that replaced the receptacle. Doug
  • personaly I wouldnt keep a modified sign wave inverter any more. motors use more power and run hotter on them, they can dammage electronics and so on. just be carefull what you use it for.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,188 PostsLatest Activity: Jan 17, 2025