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Old 06-16-2014, 09:13 AM   #16
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Long winded electrical question


These devices are not harmed by reverse polarity. When the polarity is one way, it'll cool; when it is the other way, it'll heat.

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Old 06-16-2014, 09:26 AM   #17
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Originally Posted by Mooseville View Post
Before I toss the cooler to the road, I will wait and try the 12v cigarette plug I ordered...I really have nothing to lose at this point. If I fried it, so be it, but maybe there's a "slim" chance that I'll get lucky, and I'll be able to recover it. So for attaching the existing wire that is hooked into the cooler (hidden inside)...I'm assuming it makes no difference which wire goes onto the red or black of the new cigarette lighter plug that I ordered ? Is that right ? Thanks for your help (*and patience*) Have a great day.
Sorry but for a DC device the polarity does matter. But since most of think the cooler is a goner, it really doesn't matter.
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Old 06-16-2014, 10:14 AM   #18
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It could still be used as a "bait " box. If it will not operate, the bait don't care if it's kept warm, or cool.

Can be used to store something from the atmosphere, Still useful just not as a cooler.

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Old 06-16-2014, 11:08 AM   #19
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Originally Posted by Mooseville View Post
I'm assuming it makes no difference which wire goes onto the red or black of the new cigarette lighter plug that I ordered ? Is that right?
No, it matters.

The element in that type of cooler depends on the polarity. Connect it right and the element will start cooling. Connect it backwards and the element will (may?) generate heat. I'm not sure whether or not the unit would overheat or not. You'd want to only connect them loosely to confirm which is which. If it cools then connect them permanently that way. But don't leave it connected unattended until you're sure it's working properly. It's entirely possible you've done enough damage to the circuit that it might fail in such a way as to be more likely to catch fire.

Given the risks I wouldn't ever continue using it, even if you do manage to get it reconnected properly. Since you're not all that savvy about electricity there's greater chance you might not be able to tell that it's in much worse condition that is safe. The coolers are cheap, lives and burned down houses/cars are not worth the 'savings'.
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Old 06-16-2014, 12:32 PM   #20
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No, it matters.

The element in that type of cooler depends on the polarity. Connect it right and the element will start cooling. Connect it backwards and the element will (may?) generate heat. I'm not sure whether or not the unit would overheat or not. You'd want to only connect them loosely to confirm which is which. If it cools then connect them permanently that way. But don't leave it connected unattended until you're sure it's working properly. It's entirely possible you've done enough damage to the circuit that it might fail in such a way as to be more likely to catch fire.

Given the risks I wouldn't ever continue using it, even if you do manage to get it reconnected properly. Since you're not all that savvy about electricity there's greater chance you might not be able to tell that it's in much worse condition that is safe. The coolers are cheap, lives and burned down houses/cars are not worth the 'savings'.
I hear what you're saying Bill, and I would only use it outside and supervised (if it works again) and I would NEVER trust it unattended...however your point is very well taken...thanks for the heads-up. I'll let you all know the outcome one way or the other once I get the 12v cigarette lighter thing. Plus as someone said, nothing saying I can't use it as a cooler with some ice in it to keep things cool. Wish me luck.
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Old 06-16-2014, 01:16 PM   #21
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Oh, you KNOW that won't hold true...
You and I both know that is not true for some things or with some people. I was on the road, driving for Schneider National, when I had the cord end that plugs into the cooler, and the female end inside the cooler melted.

I was lucky and was able to pick up the replacement parts at TA Travel Center. Fixed it on the spot and was good to go again.

A lot of reasons that this happens. Is that if it is too cold for the ambient air. The plate will get so cold, that it causes the plug to overheat. Then you end up with a burnt up cord, burnt up Thermistor and diode.
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Old 06-16-2014, 01:17 PM   #22
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Sorry but for a DC device the polarity does matter. But since most of think the cooler is a goner, it really doesn't matter.
With these coolers it does. As I and another have stated. You turn the cord where it plugs into the cooler one direction the plate inside cools. You turn it the other direction, the plate inside heats up.
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Old 06-16-2014, 03:14 PM   #23
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Quote:
Originally Posted by Mooseville View Post
Before I toss the cooler to the road, I will wait and try the 12v cigarette plug I ordered...I really have nothing to lose at this point. If I fried it, so be it, but maybe there's a "slim" chance that I'll get lucky, and I'll be able to recover it. So for attaching the existing wire that is hooked into the cooler (hidden inside)...I'm assuming it makes no difference which wire goes onto the red or black of the new cigarette lighter plug that I ordered ? Is that right ? Thanks for your help (*and patience*) Have a great day.
If you wire it backwards. then when you have the cooler end turned for cooling, it will heat, and when turned for heat, it will cool.
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Old 06-16-2014, 06:26 PM   #24
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Long winded electrical question


The shame of it is, there's a very good chance that the unit was OK before you plugged it into 120 volts. Your friends probably didn't plug the connector in all the way and just created a hot spot on the center contact.
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Old 06-16-2014, 07:06 PM   #25
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The shame of it is, there's a very good chance that the unit was OK before you plugged it into 120 volts. Your friends probably didn't plug the connector in all the way and just created a hot spot on the center contact.
It has nothing to do with being plugged into 120 vAC. It was plugged into an inverter. The problem with these coolers, is that after a while the plug overheats and melts both at the male & female ends.

They are not meant to be for continuous use as some people do with them.
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Old 06-16-2014, 07:11 PM   #26
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It has nothing to do with being plugged into 120 vAC.
Sooo....you are saying that 120 on a 12 vdc input is OK?
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Old 06-16-2014, 07:15 PM   #27
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Long winded electrical question


You are missing my point. If he didn't spark it out on 120 he could have just replaced the melted connectors and everything would be fine.
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Old 06-16-2014, 07:18 PM   #28
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Sooo....you are saying that 120 on a 12 vdc input is OK?
Again for the 400th time. The third party was using a Power Invertor that is made for these coolers.

Go back and read the original post.
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Old 06-16-2014, 07:21 PM   #29
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You are missing my point. If he didn't spark it out on 120 he could have just replaced the melted connectors and everything would be fine.
There was no 120 vAC involved on the end that the cooler plugged into the Invertor. This is again a typical problem with those Coleman coolers.

If you do a search for "Coleman thermocooler plug melting". You will find hundreds of posts from people that have had this same issue. Again. It has nothing to do with being plugged into the invertor that took 120 vAC to 12 vDC.
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Old 06-16-2014, 07:22 PM   #30
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This thread is exactly why the NEC exists and why inspections are required, lol.

12v, 120v, it's all voltes, right?

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