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Old 10-08-2006, 12:54 AM   #15
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Quote:
Originally Posted by steelbird312
OK, guys, time for education. I got mine the hard way.
It does not matter at all about the amps or watts when it comes to protecting your equipment, but rather VOLTS getting there. The breakers take care of too large of a demand.

The amps pulled by each appliance can be added together, and if they total less than the breaker is rated, will cause nothing to happen, When they exceed it, then the breaker trips.
This would explain why this summer we lost a circuit when I was running the A/C while plugged into a regular house-hold socket and the wife plugged in a vacuum cleaner into a separate outlet, same circuit. We had to reset the tripped circuit breaker, but everything was fine.

Thanks! I'll keep on running the A/C for comfort!
a.Z.
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Old 10-08-2006, 06:08 AM   #16
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Quote:
Originally Posted by Minnie's Mate
Don't use the A/C!

Over the week end we were in the mountains and used the heat pump. Each morning since we discovered the breaker had tripped. That is how we discovered the heat pump had been left on. 15 amps can't handle much more than lights and refridgerator.
Minniesmate,
Actually, you can use anything that you want, AS LONG AS the combined amps used are not in excess of the breaker the electricity is coming through. I have a 20 amp breaker, and the A/C, fridge, and converter have been on the last 3 days (I live outside of Griffin), packing for a short trip. The big key is to ensure FIRST that the voltage to the unit stays up when you are running these things, and then second, the amps do not exceed what your breaker is rated for.

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Old 10-08-2006, 10:01 AM   #17
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SB312 is correct about the voltage drop. The amp thing will take care of itself (breaker trip) for the most part, but a low voltage will do damage to the air conditioner. The PO of my TT left these two items for me and they are plugged into an outlet in the kitchen area. Very easy to see when you enter the trailer. The top is a volt meter and the bottom is a polarity / ground checker.
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Old 10-08-2006, 10:10 AM   #18
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I know what the volt meter does, but what's the polarity function for? To make sure that you are actively grounded?
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Old 10-08-2006, 10:15 AM   #19
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Different combinations of lights turn on to show the status of the power. The condition in the photo is polarity correct and proper ground. It will detect no ground, no neutral, reversed hot and neutral etc. BTW when on generator (Honda EU1000) it will show correct polarity but no ground. This is normal.
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Old 10-08-2006, 10:33 AM   #20
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I gotta GET me one of those!
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Old 10-09-2006, 09:10 AM   #21
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Quote:
Originally Posted by steelbird312
Minniesmate,
Actually, you can use anything that you want, AS LONG AS the combined amps used are not in excess of the breaker the electricity is coming through. I have a 20 amp breaker, and the A/C, fridge, and converter have been on the last 3 days (I live outside of Griffin), packing for a short trip. The big key is to ensure FIRST that the voltage to the unit stays up when you are running these things, and then second, the amps do not exceed what your breaker is rated for.

I agree. However, if your AS is parked very far from the house and you have to use an extension cord, you will have a voltage drop that can cause damage to the A/C unit or you can simply add up to too many amps and trip the breaker during the start-up of the compressor.

It all depends on what is connected to the circuit other than the Airstream. Ideally, you should have a dedicated 30 amp circuit to plug the Airstream into. If you don't you run the risk that you may not have the volts to run the A/C or you will keep tripping breakers or damage the A/C.
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Old 10-09-2006, 04:06 PM   #22
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On the days when I am alert and paying attention this is how I provide electricty to my unit. I make certain power is off at the breaker in the trailer. I also make certain that power is off at the camp connection. I plug in my 30 amp to 15 amp adapter along with my circuit tester. I then put the breaker in the on position and check the lights on my circuit tester. If all lights are green I turn off the breaker unplug the adapter, attach the camper power cord and turn the breaker back on. If the circuit tester shows there is a problem I contact the campground and let them know that they have an electrical problem at my site. I have found problems at several campgrounds and many/most Airstreams will not operate with reversed polarity. Once I have determined that the source of power is correct I go into the trailer and turn on the main circuit, then one breaker at a time. I look at the voltage meter to determine the voltage level. I have run my ac unit on 20 amps at 110 volts. My home circuit is wired for 20 amps with a 20 amp breaker and I have never triped this breaker with the trailer.
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Old 10-09-2006, 04:16 PM   #23
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I agree with clancy boy. I had my electrician put a box on the outside of my workshop wheere my trailer parking pad is located. It is a dedicated 30 amp 12v circuit with an RV plug in a weather protected box (ie, it has a cover on it even when I'm plugged in). Well worth the roughly $100 - 150 to install. Cheap insurance when you consider the alternative.
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