2500 Watt Inverter Wiring Install

The Cobra inverter I have is a 2675 or something like that. It has two negative and two positive terminals. You only need to use one of each. There's no sense in running two of each. I talked to a mechanic before I hooked mine up. And contacted Cobra technical service. I used 4 gauge wire, as my wires would only be four foot from battery. Both told me the size depends largely on the distance from the battery the inverter will be positioned. Too small and it will get hot and risk fire.

I think I have a 200 amp fuse off of the positive battery terminal. Maybe 250? Can't remember...been so long since I hooked it up.

If I remember right, I initially bought heavier wire cause I thought I would be 6-8 foot away but turned out to be closer. But the wire was too big for the inverter connections. 4 gauge(think that's what I used) fit perfectly.

 

r u kidding? 2500 wt - over 200 amp current, it is more your car needs to crank engine with starter. It is more your alternator can produce! and your battery is 130 ah. You ginna kill your electrical system

 

I have a 180A alternator and 4 batteries and I run the engine whenever I am using a large amount of power, such as the microwave.
It works fine.....

I doubt I have used more than 100A at any one time. The microwave usually runs about 70A for a load.

 

really I've newer seen so powerfull inverter. So you have to build it home)))) And it would be big, really big! and inverter are not so efficient. They loose about 25-30% of power, so this inverter would be like an auxilary heater in cab with fan)))) It is not all, you have to run wires, thick, like to starter from batteries)))) and belive me, alternator goes bad running of full load (you wanna overload it)

So IMO, use diesels A/C generator) it is cheapest way

 

Cut off block is designed for sleeper load (I sugest 500 WT max), but not for 300 AMP_)))) LOL

 

all transam trucks come with 2500 watt inverters from cobra
bigger cables with smaller lugs shouldnt be hard to find
my theory has always been heavier is better in wire

i am sure the inverter isnt meant to backfeed thru double poitive posts
but s...t happens dont assume double post means smaller wires
had starting voltage back up on a 14 guage wire going to alternator guage on the dash once

 

APU is the best thing for this application.

Last week my friend purchased Honda A/C diesel generator (water cooled, 6kWt, 110 single phase, 220/380 three phase). No automatic start up, but this thing with 220 to 12DC converter charges batteries, run all AC stuff in cab and warms up water. Not cheap thing, over $1500, but it is real power station!