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Old 05-24-2015, 06:38 AM   #1
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1970 23' Safari
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Power question

Just came into possession of a 1970 Safari. Electrical has been updated it appears. New Coleman AC. Plugged up to my house (20amp) using a regular orange extension cord. Only ran the AC and turned a few light on and off. All was well. A few hours later interior lights not working. AC still runs. Any ideas as to what may have happened? Probably obvious but I'm no sparky.
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Old 05-24-2015, 07:03 AM   #2
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The lights should be running on 12VDC, and the air conditioner on 120VAC. So you may have a situation where the 12 volt converter (charger) is not working, and the battery has discharged.

Or, you may have a fuse problem on the 12 volt supply.
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Old 05-24-2015, 07:09 AM   #3
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P.S. Just found the fuses in my converter were blown. Not sure why.
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Old 05-24-2015, 07:38 AM   #4
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Twenty amps may not be enough to power the trailer with Air on. Be careful. Jim
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Old 05-24-2015, 08:26 AM   #5
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I'm not familiar with the specs for the Coleman AC unit, but I would be surprised if 20 amps (and your extension cord could actually be a 15 amp cord) is sufficient. After you've replaced all the blown fuses, I would try to run the AC when connected to a proper 30 amp power supply. Note that a residential dryer outlet does not have the proper power to run your trailer even though the plug looks compatible. Plugging a RV into a dryer outlet and frying the RV electronics is a tragic newbie mistake. Don't do it! Go to a campground to test this.
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Old 05-24-2015, 08:29 AM   #6
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Great feedback. Thank you! Back powered up after replacing fuses. Can I plug up again to recharge battery and not run AC or would that be bad?
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Old 05-24-2015, 08:32 AM   #7
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Originally Posted by Middy View Post
Great feedback. Thank you! Back powered up after replacing fuses. Can I plug up again to recharge battery and not run AC or would that be bad?
Yes, just don't run the A/C because it pulls about 16 amps.
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