i am sure that I have read this on the forum somewhere but I can't find it now.
we need a new upright fridge freezer for the motorhome, about 190 ltr.
is it possible to use a domestic fridge, about 1/4 of the cost and run it through an inverter.
The one we have looked at says
voltage 220-240
current 1.1A
power input 140W
this means nothing to me.
please be gentle with me.
oldtrack123 said
11:39 PM Dec 16, 2014
HI
Can you, yes! with certain precautions:
Use the inverter to supply the fridge only![safety reasons]
You will need a pure sinewave inverter
You will need a inverter that can handle the motor start up current
That could be from 750 <1000watts short term
THe domestic fridge may not handle the constant shock & vibrations of mobile use
140W on 12V = near enough 12A when frig is running, ADD inverter losses & that becomes around 14A
Depending on Ambient temp around the fridge , warm loadings, thermostat setting frequency of door opening it could use 100< 140Ahrs per 24hrs
You would need would need a big battery bank & a means of recharging [solar or generator]
PeterQ
Peter_n_Margaret said
11:48 PM Dec 16, 2014
I run a 130L fridge plus a 30L separate deep freeze.
They draw under 50W each, MAXIMUM and have quite low duty cycles.
I have quite a large solar and battery system.
What you propose will probably use double that power.
Where will you get that from?
Cheers,
Peter
Motorhomer13 said
09:31 AM Dec 22, 2014
When I first built my bus, I put in an LG 240volt 220 lt fridge.
It went fine for 12 months then went downhill.
We went 'home' and pulled the fridge out and put it in the house.
Called the Guarantee guys and they tested it.....all fine.
Put it back in the bus and it only worked for a week and sure enough ...failed again.
we took it out and sold it at a garage sale.
Replaced it with a 210 lt 12/240volt model from Evacool.
We did have an issue with that one but Evacool eventually came to the party and fixed it.
They replaced the condensor and alls well and still going even thru 35+ degrees.
I must add that I connected the power direct to the batteries so as no failures can occur.
i am sure that I have read this on the forum somewhere but I can't find it now.
we need a new upright fridge freezer for the motorhome, about 190 ltr.
is it possible to use a domestic fridge, about 1/4 of the cost and run it through an inverter.
The one we have looked at says
voltage 220-240
current 1.1A
power input 140W
this means nothing to me.
please be gentle with me.
HI
Can you, yes! with certain precautions:
Use the inverter to supply the fridge only![safety reasons]
You will need a pure sinewave inverter
You will need a inverter that can handle the motor start up current
That could be from 750 <1000watts short term
THe domestic fridge may not handle the constant shock & vibrations of mobile use
140W on 12V = near enough 12A when frig is running, ADD inverter losses & that becomes around 14A
Depending on Ambient temp around the fridge , warm loadings, thermostat setting frequency of door opening it could use 100< 140Ahrs per 24hrs
You would need would need a big battery bank & a means of recharging [solar or generator]
PeterQ
They draw under 50W each, MAXIMUM and have quite low duty cycles.
I have quite a large solar and battery system.
What you propose will probably use double that power.
Where will you get that from?
Cheers,
Peter
When I first built my bus, I put in an LG 240volt 220 lt fridge.
It went fine for 12 months then went downhill.
We went 'home' and pulled the fridge out and put it in the house.
Called the Guarantee guys and they tested it.....all fine.
Put it back in the bus and it only worked for a week and sure enough ...failed again.
we took it out and sold it at a garage sale.
Replaced it with a 210 lt 12/240volt model from Evacool.
We did have an issue with that one but Evacool eventually came to the party and fixed it.
They replaced the condensor and alls well and still going even thru 35+ degrees.
I must add that I connected the power direct to the batteries so as no failures can occur.
Cheers
Frank
Here is an actual live comparison test - http://www.fridge-and-solar.net/fridgetest1.htm
-- Edited by PeterD on Monday 22nd of December 2014 08:35:49 PM