fridge amps

[96terrano]

Ok so about to wire my 12S socket for my little Hyundai, what's the best amp wire to use for the fridge power feed? I've already got wire for the charging circuit as it came with the SCR for charging my AUX battery in the spare wheel well, but will need a permanent live for the fridge

Just want to know what the best amperage of +ve and earth cable I should use

Thankies!

 

[judd750]

depends on the fridge, absorption or compressor type ?

 

[SPARKIEDOO]

What the rating of the fridge ........you will find that on the Data badge :augie
Then you can work out what size of cable / fuse you will need :clap

 

[SPARKIEDOO]

depends on the fridge, absorption or compressor type ?

Don't confuse the boy :lol:lol

I was going to ask Ryan if he knows if what the Delta T is between Super heat & sub cooling ......but that may be a Question to far :naughty:naughty

 

[zippy656]

Caravan fridge pull upto 10 amps

15amp fuse is fitted

Use 20amp cable

 

[96terrano]

actually, i'll just use a 12v cool box when i go on camping holidays, they're about 10/15 amps i think, designed to run off a standard 12v ciggy lighter so will store that in the trailer

 

[96terrano]

Caravan fridge pull upto 10 amps

15amp fuse is fitted

not as much as i thoght then

 

[briggie]

current ( in amps ) is voltage divided by resistance ....... or power in watts divided by voltage .

 

[judd750]

i only asked as i fitted compressor type fridges in motorhomes i worked on last week,
don't know how they slept for the noise on a night !

 

[zippy656]

current ( in amps ) is voltage divided by resistance ....... or power in watts divided by voltage .

Its all triangles to me:naughty

 

[jims-terrano]

Its all triangles to me:naughty

Oh good one Zippy:thumbs

 

[jims-terrano]

Don't leave the fridge or cool box running direct from the car battery without the engine running.

 

[zippy656]

Oh good one Zippy:thumbs

Carfull.

I might try another joke

 

[jims-terrano]

Carfull.

I might try another joke

:doh

 

[96terrano]

Don't leave the fridge or cool box running direct from the car battery without the engine running.

no, will be running it direct from battery but relayed off the ciggy lighter, so ignition fed:thumb2,

 

[briggie]

no, will be running it direct from battery but relayed off the ciggy lighter, so ignition fed:thumb2,

ciggie lighter sockets are normally rated around 10 amps as far as im aware ..... best to check :thumb2

 

[96terrano]

ciggie lighter sockets are normally rated around 10 amps as far as im aware ..... best to check :thumb2

aye, but ciggy is suplying the low curent feed to the relay coil:thumb2

ohh and the 12S socket is all wired, didnt need to make use of all the terminals, just the earths and fridge, battery and some other stuff for the split charge

wiring courtesy of my old SWB terrano :lol

 

[solarman216]

the answer is so simple, run your fridge and monitor the voltage, 12 volt fridge requires 12 volts you will be surprised what size cable you need to supply this voltage at the length of run you need, voltage drop on even 2.5 sq mm cable will be high, and your average tow bar cable does get near this size, Rick

 

[96terrano]

the answer is so simple, run your fridge and monitor the voltage, 12 volt fridge requires 12 volts you will be surprised what size cable you need to supply this voltage at the length of run you need, voltage drop on even 2.5 sq mm cable will be high, and your average tow bar cable does get near this size, Rick

Yeah, ill be fitting onboard voltmeters in the dash for both the Hyundai's own battery and the boot mounted leasure battery

 

[96terrano]

Yeah, ill be fitting onboard voltmeters in the dash for both the Hyundai's own battery and the boot mounted leasure battery

Will I need really thick cable, also, what is voltage drop and how does it occur?