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inverter installation location

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mounted a 2575 watt cobra inverter in a new columbia in batt box behind cab between frame rails, worked good during cold weather but now that its warm ive had 2 of them get stuck in olp (over load protection) i assume from excessive heat in batt box, anyone have any suggestions on a good place to mount one outside of cab and keep it cool and dry

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I have a 1800 watt that I mounted in the closet of my sleeper where air can flow around it and ran a multi plug strip from it and mounted below the bunk where it's easy to plug into it.

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Chris Hileman
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Mine is mounted Under the bunk in the storage area.

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Mark Harris
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I would not recommend mounting any inverter where it is exposed to the elements. Dampness and dust,dirt will quickly ruin it. I suppose one could build a sealed box to protect it. Inside the cab would be best. As close to the battery source as possible. The longer the cable the greater the power loss. Avoid useing the power cable that comes with most truck stop install kits as the wire gage is usually insufficiant. They may look like big cable but all plastic and little wire inside. And always have a fuse or circut breaker between inverter and battery source. @100 amp. Many trucks have caught fire due to bad install.

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I mounted my Cobra 2575 in the passenger side box under the bunk in my Freghtliner Century. It is mounted vertically on the small divider just in front of the bunk HVAC unit. There is always airflow there. Even when the bunk fan is in the "off" position, the fan is actually running on low. It's also convenient there. I can easily lift the bunk and turn it on and off when I need to. I run a couple of short extension cords right through the pre-existing vent holes.

My battery box is between the frame behind the cab. I bought a pair of 4 gauge jumper cables and ran 3 cables for each positive and negative terminal (6 cables total). I was able to keep the cable only 4 feet long and still leave slack for cab movement and vibration.

USE A FUSE! As someone stated above, an inline fuse could save your truck from burning to the ground.

As a rule of thumb, each 100 watts of an inverter requires 10 amps DC. So for your 2500 watt inverter you need a 250 amp fuse. I use a 200 amp because that was all I could find when I installed it.

Instead of a fuse, try finding a circuit breaker, they are easier to find in high amp ratings. If your inverter has a plug that looks like a phone jack, that is where you can plug in a remote switch so you don't have to lift your bunk to turn on/off inverter.

Chris Hileman,

I rarely ever turn it off, literally only a couple of times per year. The only time I do is if I am parked for more than 2 days. It's easy just to pick up the bunk and hit the button. I run a fridge and freezer with mine and unless I am home for a long weekend, it's easier just to leave it on. If I get home Friday night, the batteries and inverter will run my fridge until Monday morning.

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