What size cable from vehicle to Camper Battery

Hi Graham,

Thanks for info. What size in mm is 6 B & S I only know mm size wire. And yes I will only use it (wire) for charging the Battery, not drawing from.

Regards

JD

JD,

Please fuse between the trailer battery and the anderson plug as well as a fuse off your vehicle's second batterry (if that is where your anderson plug is running from?). If you disconnect the anderson plug and the wire shorts between your trailer battery and the anderson plug what will stop it from burning the trailer to the chassis?

In essence, fuse any positive cable from any battery as close as practical to the positive terminal. (There may be exceptions to this but in general it is wise to follow this advice)

I agree with Grahams wire size suggestion.

Cheers, Trevor.

He obviously wants to charge it with that wire as well so bigger is better regardless of what he wants to run off it I would have thought.

I use 4 B& S back to my van which has 2 100AH AGM's in it

6 B&S is only $5.95 at Sidewinder so I wouldnt go less than that. (7mm Diam)

Ian

Ianw
That is an excellent price if it for both positive and negative which is what is needed but I doubt it is for both.
Ian

Dio
I dont think you meant to post "His service is next to none"but thats how it reads.
Ian

Star Bug
My calcs come at 0.488V drop with 9M of cable run but what gets me is he already has a second battery so how do we know what size cable feeds that battery which should be asked to determine what is already installed as that could limit what he will get at the trailer if undersized.
This could mean that the cable run overall may increase and so too should the cable size.
Similarly the alternator size and vehicle type would help to determine what amps may be available as with out all the details to assess all answers may be misleading.
Ian