Hi all. Quick electrical upgrade to share. I installed a 3000W/6000W surge pure sine inverter to replace the 1500W/3000W one I had. I could run the AC with it, but not the AC and Fridge if they came on same time (not enough surge capacity since the 60W fridge seems to have a ~400W surge). Also the 1400W hot water heater would stress the 1500W too much. The old HW heater I replaced over a year ago had a 400W element that took about an hour to heat up. I just felt like I was pushing the edge all the time.
I am keeping the 1500W Inverter for a field replacement if primary ever fails. Gotta have one for the Fridge at a minimum.
Tested it all out and the Fridge and AC cycle on and off with no issues now. Also, with Fridge on (AC off), I was able to heat my 6 gal tank in 15 minutes . Nice to have those options. Cannot run everything at once, but can run Fridge and any other larger drain item (AC/Microwave/Coffee maker/HW Heater.. etc.) Of course I have propane also for HW heater and stove... but I tend to be redundant.
Ran the AC and Fridge for an hour and it cooled down well as expected. It was about 92deg outside. None of the Feed wires got warm or etc. and only had a total of 0.5V DC drop on entire run of wire to the inverter that included the Fuse connections and large DC bus. Very happy with the results and performance now.
I need to hook up the 12ga romex to the front terminals and run into transfer switch. One outlet cannot handle full power @25A. I just plugged in for quick system checkout. Probably will never run even close to max. in any case, but want to do it right. This Inverter will have some margin as I manage the loads properly. Never want to run more than 80% for any extended period of time anyhow. Looking back, I should have just got the 3000W to start with.
With no sun.. it appears the AC has about 3-4 hours of run time with the fridge on the battery bank I have. In full sun with the 500W solar.. of course that extends it and even more when it starts to cycle on and off. If I ever go west to the desert, I will pick up a few hundred more watts of panels so I can run AC all day off solar. I like that idea. I'll continue to supplement with my Honda 2000 as needed in the meantime.

This is just running the Hot Water heater and Fridge. The fridge is just 60W when running. Prior to turning the HW heater on, I had the AC running for an hour. It takes about 600W running.

Sent from my SM-G935P using Tapatalk