Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5 amps

[JohnEGraham]

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Specifications:
Maximum Continuous Power: 1000 Watts
Surge Capacity: 2000 Watts
POWERS UP TO 9.0 AMPS
No Load Current Draw: 0.6 Amps
Maximum Efficiency: Approx. 90%
Input Voltage Range: 10.5 - 15.5 VDC
Output Voltage Range: 110VAC 60HZ
Under Voltage ShutDown: 10.0 Volts
Thermal Shutdown: Auto Reset
Wave Form: Filtered Modified Sine Wave
UPC: 6.17977.00490.2
Moisture Resistance Conformal Coating
Vibration Resistance Rubber Grommets
Internal Fuse: 35 Amp
Dimensions: 14.5"L x 9.5"W x 3.125"H
Weight: 9.26 lbs.

VEC049GM or VEC049M PRODUCT DESCRIPTION

MARINE POWER INVERTER
1000 WATT POWER INVERTER
1000 WATT CONTINUOUS POWER/2000 WATT PEAK
CONVERTS 12 VOLT DC TO 110/120 VOLT AC HOUSEHOLD POWER
Features Include:

• Two shock resistant UL-listed GFCI protected outlets
• Ammeter
• Battery voltmeter
• Features high surge capability to start heavy loads such as,lamps motors and other inductive loads
• Powerful internal HIGH-SPEED cooling fan with high volume, vented housing
• Circuit board is conformal coated for corrosion resistance

[FONT=Arial, Helvetica, sans-serif]Price: $[/FONT][FONT=Arial, Helvetica, sans-serif]242.89[/FONT]
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[JohnEGraham]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

Added:
Now that I have up-dated my Batteries ( Two m-31 Optima blue tops)
I would like to keep my Refrigerator going while out and on the hook.
I replaced my "norcrap" duel voltage with a small 120v. Dorm size refrigerator.
We have shore power at my slip but use coolers while we are out. We have used the inverter for the blender but would like to keep the refrigerator going..
How long should it go while on the hook with the Radio?

 

[tobnpr]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

You can- but that sucker draws a lot of juice when running- not to mention starting.
Running it will pull over 16 amps/hours from your battery, and 94 amps every time the compressor starts.

 

[Alegria]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

You can- but that sucker draws a lot of juice when running- not to mention starting.
Running it will pull over 16 amps/hours from your battery, and 94 amps every time the compressor starts.

She is for sale??? Moving Up?

Well how long you can run it depends. topnpr is right on the amp draw. Your two M31's have 75 amp/hours capacity each. Depending on how they are connected (seperately or in parallel)

If they are seperate on a 1/2/both switch. Then 75/16 = 4.6 hours of continuous running and one battery is dead, if you run the switch on both you can theoretacally get double that...but run the risk of not have either battery available to start your engine.

Since the compressor won't run all the time it will depend a lot on outside temp, how many times the door is open to get a cold beverage...

It should start the compressor I would think. It's modified Sine wave so any motor load you put on it, blender, refrig, is going to run a bit warmer. If they put in a good filter it might not stress the motor too much to worry about.

Overall it should work. I would turn it off overnight just to make sure it's not hitting the battery and draining it.

You may need to connect it to the batteries directly with sufficient gauge (thick) wire to overcome the starting voltage drop of the refrig compressor and the length of wire will increase the voltage drop...

Make sure before you mount it anywhere permanent that it's safe to be mounted where you want to put it. I.E. is it rated to be put there (ER (sparks), locker (heat), cabinet)..(Of course you know that!!! Just a disclaimer...)

 

[JohnEGraham]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

So, I have 75 Ah (times 2) at maximum charge a couple of hours of non-running time should not be a problem.
I have shore power at my slip, it would be just when we go out.


Performance Data:

• Open Circuit Voltage (fully charged): 13.1 volts
• Internal Resistance (fully charged): 0.0025 ohms
• Capacity: 75 Ah (C/20)
• Reserve Capacity: BCI: 155 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)

Power:

• CCA (BCI 0°F): 900 amps
• MCA (BCI 32°F): 1125 amps

 

[Pietro]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

If you want to keep the fridge running all night I would add one or two dedicated batteries...that's what I did (using sealed home alarm type batteries) and it works! Just remember to fit an insulator :wink:

 

[Iprof]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

I anchor out a lot, and the fridge gets turned on in May and off in October. Last summer we were anchored out for 6 weeks only spent 5 nights at a marina. The Norcold draws 3.5 while running and at night it comes on very little. I have a Kool-a-tron and it draws 3.5 amps continues. I am replacing the Kool-a-tron with a 1.8 cf 120V bar fridge. I will run it off the inverter and charge my batteries every morning to bring my amps back up. I found with the anchor light on and the Kool-a-tron I was drawing 5 amps. I was getting 18 hours out of my batteries before I would run the generator. I have 2 GC 6V Interstate 235amps and a starting battery that is only used for starting. You might want to get a Link Lite, it is a fuel gauge for batteries and will tell you how many amp hours you have left in the battery. The other thing to remember is how big is your charging capacity, I have 2 chargers a 35 amp and a 50amp when running the generator I can only get 47 amp hours back into the batteries. If I am down 100 amp hrs then I am looking at running the generator well of 2 hours to replace the amps that have been removed.

Ken

 

[Iprof]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

You can- but that sucker draws a lot of juice when running- not to mention starting.
Running it will pull over 16 amps/hours from your battery, and 94 amps every time the compressor starts.

Are you sure on the 8 amps while running? How did you come up with it drawing 94 amps every time it starts up? It seems a wee bite high to me.

Ken

 

[tobnpr]

Re: Can I run my Small Refrig of this Converter? Current draw: 1.5 amps running, 8.5

Are you sure on the 8 amps while running? How did you come up with it drawing 94 amps every time it starts up? It seems a wee bite high to me.

Ken

Yup. Simple math.
An AC appliance draws 10 times their rated amps- plus a 10-15% efficiency loss- when operating off a 12v system.

The OP's battery- with a 75 a/h reserve- can only be run 4 hours before it is depleted. You never want to draw a battery down below 50% as you'll dramatically shorten it's life. The other battery should remain off the grid and be reserved for starting.

Your setup- golf cart batteries for the house and an isolated starting battery- is exactly how my last boat was set up and is the best way to go IMO.