12 volt socket

4.8mm2 Tinned max 5m run.

6.0mm2 Tinned better.

Use a breaker. Better than a fuse. Don't try it with out a fuse or breaker.

Regards Derek.

Thanks for the info too. Got a 50lt Waeco and battery etc being done next week by batteryworld. They seem to know their stuff but will keep an eye out.

Hi Andrew

The great majority of fridge problems can be traced back to the cigarette type fittings. Even the so called heavy duty ones are unreliable in the medium to long term because these fittings rely on spring tension for a low resistance connection. Unfortunately loose their spring tension due to constant vibration especially on rough roads.

Get your auto electrician to install quality connection system and don't chase a bargain as you get what you pay for.

Use 6 mm wire for +ve and -ve. What goes in must come out. Ensure -ve connections are clean and tight. Protect the installation with a good fuse or better still a circuit breaker.

Keep the cable run as short as possible because the length of cable run equals voltage drop. !2 volt DC systems are potentially very unreliable if not installed correctly maintained by ensuring all connections are clean and tight.

Good luck
Regards
Phil

if you are not prepared to pay $50 for a decent low current circuit breaker you are better using a blade fuse.