I want to add a 1000w pure sine inverter to run my residential refrigerator.

[boltdave]

I want to add a 1000w pure or true sine inverter to run our new 18.3 cu. ft. Frigidaire Gallery residential refrigerator. I have a Dimensions 2000w Quasi sine inverter/charger that runs the coach, however most agree not to allow it to control the refrigerator. My questions are, can I just add the pure sine inverter to the system and if so, what are the steps in the install? Thanks for any help.


2005 Journey 39F
2008 Saturn Vue

[BFlinn181]

The inverter should come with pretty good installation instructions. In general, find a good place to install it with enough ventilation. Then measure length of wires needed to connect to batteries and size wire gauge appropriately. Closer to the batteries is better, the 12 v DC will drop off much faster than the 120 v AC. If you're not familiar with wiring, it might be better to have a pro do it.

[wa8yxm]

Why do they say not to let the 2KW job power the fridge? I mean, it can do it now sweat. The only issue woudl be if you are drawing max power for the Microwave and the fridge kicks in it may overload.

No special instructions other than add more batteries.

[BFlinn181]

wa8yxm asks a good question, who told you it wouldn't work on a MSW inverter? Reading through the manual, it talks about not to run over/under 10 v from 115 v because of the high efficiency, but doesn't prohibit or even mention a MSW inverter, just says 60 Hz. You might call Frigidaire before spending the money for another inverter if your 2k inverter can do the job.

http://manuals.frigidaire.com/prodin...42063801en.pdf

[Dr4Film]

I would also install a 120 VAC auto transfer switch unless you intend on running your fridge full time off your battery bank.

Or better yet buy a 1000W Inverter with a ATS included.

Dr4Film ----- Richard

[DancinCampers]

Check your wattage when you refrig goes into defrost. The 1000w may not handle it.
Our coach came with a 2800 watt inverter.

[bruceisla]

Originally Posted by boltdave

I want to add a 1000w pure or true sine inverter to run our new 18.3 cu. ft. Frigidaire Gallery residential refrigerator. I have a Dimensions 2000w Quasi sine inverter/charger that runs the coach, however most agree not to allow it to control the refrigerator. My questions are, can I just add the pure sine inverter to the system and if so, what are the steps in the install? Thanks for any help.


2005 Journey 39F
2008 Saturn Vue

In general, electronics are happier on pure sine ... without seeing your Frigidaire specs, I'll take a guess that the compressor will draw about 6.5 amps (120vac) with a locked rotor. That's at start-up or stall after a power outage. So, 1000w should be adequate for a dedicated unit.

As a further consideration, depending on how much boondocking you do, you might want to consider a bigger pure sine and putting the microwave AND reefer on it. Depends on how much money you want to spend.

In my case, I don't boondock and run the residential reefer on shore power or the genset. In hot weather, driving down the road, I typically run the genset for the roof A/C anyway. My reefer stays food-safe cold for at least 4 hours with no power.

[John Hilley]

Originally Posted by BFlinn181

wa8yxm asks a good question, who told you it wouldn't work on a MSW inverter? Reading through the manual, it talks about not to run over/under 10 v from 115 v because of the high efficiency, but doesn't prohibit or even mention a MSW inverter, just says 60 Hz. You might call Frigidaire before spending the money for another inverter if your 2k inverter can do the job.

http://manuals.frigidaire.com/prodin...42063801en.pdf

Frigidaire didn't even consider anyone using the refrigerator on an inverter, so would not mention any warning.

A dedicated 1000 watt pure sine wave inverter and a transfer switch such as the Kisae TS15 would make a nice trouble free and easy solution. Try to keep the inverter within 4 ft of the batteries and use at least 2awg cable.

[boltdave]

Thanks to all responses. In the Frigidaire manual it does state that any loss of power exceeding 10% can injure compressor and is not covered by warranty. The MSW inverter that we have states 85% consistency, therefore leaving me with this question. Do I risk it? Love the refer. Just want to be safe.

[vsheetz]

Originally Posted by Dr4Film

I would also install a 120 VAC auto transfer switch unless you intend on running your fridge full time off your battery bank.



Or better yet buy a 1000W Inverter with a ATS included.



Dr4Film ----- Richard

Agree.

[John Hilley]

Originally Posted by boltdave

Thanks to all responses. In the Frigidaire manual it does state that any loss of power exceeding 10% can injure compressor and is not covered by warranty. The MSW inverter that we have states 85% consistency, therefore leaving me with this question. Do I risk it? Love the refer. Just want to be safe.

That is 85% efficiency, not consistency. It means that 15% of the 12 volt DC energy input to the inverter is wasted in heat. Fridgidaire is talking about a 10% loss of voltage, thus less than 108 VAC nominal voltage would be harmful to the compressor.