Residential Fridge

[Spooby_Doo]

Howdy -

I have 16 3500 Cummins with a 220Amp alternator. Stock Batteries.

I'm looking for a intelligent solution to run my 120v residential camper fridge with truck power on travel days.

I see two ways to accomplish this:

1. 1000W inverter wired to truck with power being supplied via the 240v Input then isolate the fridge so its the only draw.


2. Upgrade the RV batteries and try to maintain them with the standard 12v supply


Any help would be appreciated

 

[jsalbre]

Is your fridge 12v or 120v?

 

[Dave01]

Probably both voltages.

This has to be a common desire on campers, someone has to have the easy answer I would think. Not sure I'd want a 1000 watt inverter in continuous use like that, powered by the alternator.

 

[jsalbre]

There is an easy answer, but it depends on the fridge. A fridge that runs on 12v and 120v would be extremely rare. Most RV fridges are either 120v and propane, or 12v.

This kind of stuff is what my company does.

 

[Brutal_HO]

"Residential" fridge in an RV means 120V AC. 'Cmon, you guys should know this...

 

[jsalbre]

"Residential" fridge in an RV means 120V AC. 'Cmon, you guys should know this...

My RV claims to have a residential fridge but it's 12v. They've changed the terminology in the last few years:

Furrion Arctic® 16 cu. ft. 12V Side-by-Side Residential Style Refrigerator

Powerful, efficient cooling on the move. Contemporary, Compact and efficient - the residential look design with large interior capacity delivers flexibility without cluttering your interior space. 12V Power brings energy efficiency and does not require to use an inverter. The high-efficiency...

furrion.com

 

[Brutal_HO]

My RV claims to have a residential fridge but it's 12v. They've changed the terminology in the last few years:

Furrion Arctic® 16 cu. ft. 12V Side-by-Side Residential Style Refrigerator

Powerful, efficient cooling on the move. Contemporary, Compact and efficient - the residential look design with large interior capacity delivers flexibility without cluttering your interior space. 12V Power brings energy efficiency and does not require to use an inverter. The high-efficiency...

furrion.com

Valid data point and Furrion should be bitch slapped for doing that. Is that like "Military Style" weapons of war? LOL

 

[jsalbre]

Valid data point and Furrion should be bitch slapped for doing that. Is that like "Military Style" weapons of war? LOL

Reminds me of this.

 

[Spooby_Doo]

So the fridge is 120v.

But I wouldn't mind having both solutions just for my own knowledge. I agree that a dual voltage fridge sounds like a Temu product

 

[jsalbre]

So if since the fridge is 120, if you want to install a power inlet on the front of your trailer so you’re not running a cable down the side, you may be best going the inverter route.

If the fridge was DC I’d probably suggest using a DC to DC converter, but for your fridge that would require running an inverter in the RV anyway, so you may as well just save the wiring and get the power to the trailer via extension cord.

If you wanted to add the second alternator to your Cummins you could even run a 2400W inverter off the truck, and then you’d be able to run the AC in the trailer.

 

[Spooby_Doo]

Would I need to upgrade the batteries from stock on the truck to handle the output from dual alternators?

 

[Dave01]

Would I need to upgrade the batteries from stock on the truck to handle the output from dual alternators?

My 6.4 has single battery but dual alternators. No need to change battery specs. I do like the idea of dual alternators if you run an inverter full time.

 

[jsalbre]

I second what Dave said above. No need to upgrade the battery.

 

[H3LZSN1P3R]

Would I need to upgrade the batteries from stock on the truck to handle the output from dual alternators?

Only if you were not running the truck while powering the inverter.