Power inverter keeps blowing fuse

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Old 08-02-02, 07:02 PM
C
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Power inverter keeps blowing fuse

Recently I bought a Jenson 300 watt power inverter for my car so I could use my laptop. As soon as I plug it into the cigarette lighter, it blows a fuse that controls the cigarette lighter. I know the problem is with the inverter and not the car because I tried putting the inverter in a friends car and it blew his fuse also. Any suggestions on what could be wrong with this unit?

Craig
 
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Old 08-02-02, 07:03 PM
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MTgets
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what size fuse is it blowing?
 
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Old 08-02-02, 07:30 PM
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It is blowing a 20 amp fuse in my car. The 30 amp fuse that is on the unit itself is ok
 
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Old 08-02-02, 07:45 PM
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Does it blow the fuse even with nothing plugged into the inverter? Can you exchange it for another one and try that?
 
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Old 08-02-02, 08:11 PM
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FREDDYG_001
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chanesworth, Their is a possible problem in powersupply with that unit. If you have the users manual take a look at the spec's on the amount of amps it takes to operate that unit or, like john said just return it.



Fred
 
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Old 08-02-02, 08:55 PM
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300 watt unit on a 12V car battery (when it is serving about a 2A load at 120V) draws 25 amps. 25 amps will blow a 20A fuse in the car.
 
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Old 08-03-02, 06:25 AM
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Wgoodrich
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I have an invertor for my laptop in my pickup. My thoughts are the plug is shorting in the cigerette socket when plugging in. If the plug is not inserted crooked the crooked plug will short to frame blowing the fuse. Happened to me a couple of times. Make sure you wait till the invertor powers up before you plug in your 120 volt equipment. This will tell you if you have a shorted invertor or shorted cigarette plug. If the fuse holds until you plug in your 120 volt equipment then it blows you are pulling too many amps on your 120 volt equipment.

Wg
 
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Old 08-05-02, 11:13 AM
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jlbos83
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It is true that he is not going to be able o get 300W, but it is only going to draw that when it is loaded heavily. The fuse shouldn't be blowing. I agree, check for shorts, then take it back and try again. Could save a bit of cash and get a 200W unit, you don't want to (and can't) pull current for 300W without hardwiring to the battery anyway (through a fuse, of course.)
.
 
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