Need help understanding the power systems in the trailer please - Page 5 - Escape Trailer Owners Community

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Old 02-26-2015, 03:49 PM   #41
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Quote:
Originally Posted by TAfraser View Post
I believe the term Compressor-Locked Rotor Amps is a confusing way of stating the amount of current that’s required to start the compressor. The fan on an air-conditioner starts only once when first turned on, then runs all the time, but the compressor starts and stops as needed to keep things cool. You can hear when the compressor starts, both from the air-conditioner and from the generator if you’re using one.

When we purchased our Casita in 07 I read all kinds of posts where people were having issues powering their air-conditioners with the Honda 2000. They would go through specific light-off procedures (sometimes successfully) in order to start and run their A/C units, they would link two Honda 2000s together, purchase the Honda 3000, or they would install “Soft Start” circuits in their air-conditioners.

Soft Start circuits consist of capacitors that are charged during operation and used for power assist during compressor start-up. Adding the Soft Start circuits would allow the use of a smaller generator. I've been told, I don’t know where, that the newer A/C units all have the soft start circuits installed. I can’t verify that because we own the Yamaha 2400 and have never had a problem.
Makes sense to me TA. I don't know why they publish it as a means of expressing the surge at startup, but they do. If the soft start circuit is there it makes even less sense because the surge is handled by the capacitor - similar to the run capacitor on a home AC unit. Oh well, it IS Dometic.
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Old 02-26-2015, 04:52 PM   #42
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Originally Posted by rbryan4 View Post
Just looked it up Ken. You're right. It will run on 115v ac input.

-->Compressor Loaded Amps: 9.5
-->Fan Motor Loaded Amps: 3.1
-->Compressor-locked rotor amps: 53.0
-->Fan motor-locked rotor amps: 8.8

So, with a Honda Gen you could run just the AC, but nothing else.
thanks for looking that up. Its nice to know we wont have to do anything special for the very occasional times when we really need to run the ac... Like we had to in Ottawa in a mosquito infested prov park when is was around 90 above.

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Old 02-26-2015, 09:20 PM   #43
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Laptops run on 12V for recharging right?
The input to the laptop - to run or to charge the battery - is DC (which means "direct current"), but it is rarely if ever as low as 12 volts. That's why running or charging a laptop from 12V DC power still requires an adapter to convert the 12V power to a higher voltage (e.g. 19 volts for most the HP laptops I've had) as Jim mentioned.
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Old 02-26-2015, 10:53 PM   #44
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So much great input in this thread. Many thanks to all who contributed. I don't think we want to go down the generator route, So when dry camping we'll try to adapt what we can to 12v (laptops, TV/DVD if we decide we want one) to make life simpler, we'll get the inverter too, and we'll do without AC. It'll be nostalgic to sleep under the stars if the trailer gets too hot right?
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Old 02-26-2015, 11:30 PM   #45
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For what it's worth, I don't think we're going to get an inverter. (Our 21' build date is Sept 14, 2015.) We have a small inverter (Kensington) for charging my laptop; 12V adaptors will take care of our smaller electronics. Watching t.v. isn't a priority, and neither is using a microwave. (We sometimes use both when we're camped with hookups, but not even very much then.) We ARE going to spring for a couple of extra 12v outlets. (We already have a 12v Endless Breeze fan, which I want to be able to plug in outside, under the awning.) It'd be different if we needed a CPAP machine - I mean, I get that. But we boil water on the stove and make coffee with a Melitta, don't use a hair dryer at home, so don't need one at a campground, etc. And it uses power to invert 12v to 110, ya know?

At least, this is my thinking on this so far - for our camping style/needs. YMMV.
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Old 02-26-2015, 11:56 PM   #46
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Mary F, reads like perfection to me.
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Old 02-27-2015, 01:18 AM   #47
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my thinking regarding an inverter is the same as Marys. We have nothing that we would want to run off of one anyway. At least at this point of time anyway. We actually set our self up purposely to not have to use 120 volts for anything.
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Old 02-27-2015, 01:31 AM   #48
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I have a couple cheap inverters from Canadian Tire that are sufficient to charge my MacBook or charge my camera batteries. I think they are rated 50 and 100 watts. Cheapest was $12.99 on sale.
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Old 02-27-2015, 02:45 AM   #49
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Mary F, reads like perfection to me.
I'm with Mary - 12 volts all the way. But I do have one weakness - an electric blanket is so nice on those cold nights. No noise and the electrical drain is manageable, especially if the blanket is on the smaller size.

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Old 02-27-2015, 07:42 AM   #50
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Alan, they have 12v electric blankets
http://www.amazon.com/Trillium-World...s=12v+blankets
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