8 replies to this topic

[TOERUNNER]

have just built myself a car trailer and have fitted an 11000 pound electric winch. 

i am using an anderson plug between the trailer winch and the tow vehicle.

is it ok to run a short negative cable from the vehicle plug  to the chassis rather than running a negative cable all the way forward to the vehicle battery

[Rockoz]

Should work okay. Just make sure you have a good clean surface to bolt to

[yel327]

I assume you are running a battery on the trailer? I'd run a 0V cable straight to the battery. Use Good size cable too. Best way would be to use a dual battery controller like a Projecta 150 on the car and fit 150A fuse at the trailer battery. This will limit the Anderson plug to 150A. An 11000lb winch can pull up to 600-700A hence the need for an on trailer battery.
You are going to want something like 25sqmm cable from the Andersen plug.

Edited by yel327, 23 December 2015 - 05:12 PM.

[RallyRed]

As above, my understanding is that it is near impossible to supply the winch ,when loaded up, via the car battery.......too far away for the poor old 12v to get from the car battery  to the winch motor = too much voltage drop.

Much better to have a battery on the trailer nice and close to the winch motor, and then the car just keeps it charged via the  Ando plug.

 

As a sort of related example...my caravan fridge when on 12v pulls around 28amps , it is wired to its own seprate ando plug via about 16mm cable. Then the cars ando plug is wired to the engine bay battery via appx 25mm cable ( all cable is flexible).

Even with the car running and producing around 14.5v....the voltage at the actual fridge terminals is (from memory) about 12.1v

 

So, as Yel says above...imagine the voltage drop if the winch motor is pulling 100's of amps.

 

My 2c worth

Edited by RallyRed, 23 December 2015 - 07:18 PM.

[wot179]

I bought 12 metres of welding cable and a couple of heavy duty utilux earth clamps so I could use the winch on any car,

like a massive set of jumper cables.

I have an Anderson plug near the winch so they can be unplugged and rolled up neatly for storage.

Works great, but cost more than the freakin winch...lol

[yel327]

I recently fitted an N70T battery and Projecta 150 to my Hilux, getting ready for a winch. The Projecta has an inbuilt 150A overload for the main battery, and you just put a 150A fuse for the aux battery. The Projecta charges your main battery and when its charged it charges the aux. Has a jumpstart button too so if your main battery is low you can parallel them to start the engine.
I used flexible 35sqmm. Whole setup would work the same with the aux on the trailer, and 35sqmm should be OK for that distance to jumpstart the car if need be.

[ben23]

Another thing you could do is fit one of those small Redarc BCDC1206 6 amp chargers and a battery to the trailer, running off the park light circuit. just gotta keep your park lights on while towing it. Will be fine to keep it topped up.