Inverter for Residential Frig ????

supercub wrote:
How bout if I was to use this model, what would be the answers to questions 1,2 and 3 above.
http://www.homedepot.com/p/Whirlpool-14-4-cu-ft-Top-Freezer-Refrigerator-in-White-W4TXNWFWQ/203487910?MERCH=REC-_-PIPHorizontal1-5-_-NA-_-203487910-_-N#specifications

Thanks again.
Brian

1) Yes
2) Yes
3) my fridge draws approx 3 A/C amps when running so 360 Watts. There is likely a higher startup draw but it would be an educated guess that a separate 750 W inverter would handle the fridge with some overhead to spare. There are no power usage specs on the site other than total energy usage is about .05 Kwh per hour and I am not sure how to translate that into on/off cycle usage (on a little, off a lot).

I have a residential fridge and I do run it from my 2000 watt modified sine wave Xantrex inverter. It runs fine! As long as my 4 batteries are in good health and maintained.

Back story, Had a leak that damaged my inverter. Found an inverter guy in Ft. Lauderdale and took it to him, he told me it was fried and needed to be replaced. At this time I talked in length with him about the fridge on the inverter. He told me 99% of his business is on boats and this is the exact setup they use. 4 batteries, the same 2000 watt inverter (which he had 30 of on the shelves) and a res fridge. I picked up a used inverter from a Allegro Bus that was the same as the one I lost, it and the fridge work great.

At one time my batteries did get old and I got a smoke smell from the fridge. I took it off the inverter and the smell went away. Now have new batteries and all is good again, I can go about 3 to 4 hours on the inverter running the full sized fridge.

I know it is moot but I will add I have been running my Samsung rf197 on a MSW pro sine 2500 inverter. No issues and runs great the 197 will take th incoming ac current and turn it to DC. I would think they might be able to use allow a 12volt connection one day but I doubt there are enough RVs and Boats to do that but it gets around the different voltages around the world too. I can dry camp all day and night without turning on the genet but then the next morning I will turn it on for a couple hours to make coffee and to charge up the batteries. It take about 4 amps according to the gauges when it runs and it does not run very much either.

Of course one has to keep in mind that a fridge drawing 4 Amps AC will pull about 40 Amps from the battery. 2 240 AH GCs would be able to supply that for a a little less than 120AH/40A = 3 Hours to the 50% discharge point.

(Less because 40 A discharge is far less than the 20 hour rate used to define the AH rating: 240AH/20Hours = 12 Amps)

If (when) our Norcold 1201 LRIM dies, the Samsung 197 will replace it. Probably powered with a pair of GC AGMs and a separate inverter and a pair of 130 Watt solar panels.

It only pulls four amps when it is on it is not on as much as my old dometic. I can go all day and night and turn on my genset to make coffee the next morning and be fine. The auto start will kick on before the 50% too. I was worried about this too but if I put a couple panels up top I would never need to turn it on. It is so much more efficient that I think I use much less power. Before I changed out, I could go all day and about two in the morning the generator lucked on. So real life says I am using less power. No changes in anything else and all the batteries were new. I have added another 8d to the mix and have not seen how long I can go now as it is too hot.

Most of the residential will work off of MSW, they will just work a little harder.
We changed our Xantrex MSW RG2012 for a Magnum PSW 2800, when I installed our Whirlpool. However before we changed, our Whirlpool work very well and using a Kill-a-Watt meter, the wattage was higher, then rated energy usage. Once we went to the Magnum, the energy came down within mfg specifications. Take a good look at my signature as Susan and I do a lot of dry-camping and everything works very well. I would go with what you can afford, especially if you can go upto a 2000 or 3000 watt unit

Agree with Gator that refer will use less power on a PSW. Although the Samsung RF197 uses DC for electronics, the compressor is run on 120v AC, not DC.