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Old 03-02-2011, 01:42 PM   #11
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[QUOTE=altar1;13295]
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Originally Posted by tafische View Post
Yeah the perpetual power would be a neat trick. The tv 12 volt circuit at the tv is only rated at 6 amps so not enough juice there to run the tv.

Sure there is. I have forgotten the calculations to convert to 110V, but you should easily be able to run your tv and a dvd from that outlet through the inverter.

Tom
It goes back to ohms law. The TV pulls right around 100 watts

So to get amps it is watts/volts ...so 100 watts / 12.6 volts = 7.9 amps and it only increases as the battery gets weaker -- not enough for 6 amp outlet.

The most you can get out of that outlet is about 75 watts.


REVISIT: ok - you got me thinking, I may have a mistake! I need to go back and revisit the power consumption on that TV. It is a 19" LCD. In my notebook, I have written down the label on the back says it takes 100 watts, but I just looked at a few other LCD TVs and they use far less. It is an el-cheapo so maybe it does...but before I start going to all this trouble, maybe I should verify my facts
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Old 03-02-2011, 02:50 PM   #12
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[QUOTE=tafische;13297]
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Originally Posted by altar1 View Post

It goes back to ohms law. The TV pulls right around 100 watts

So to get amps it is watts/volts ...so 100 watts / 12.6 volts = 7.9 amps and it only increases as the battery gets weaker -- not enough for 6 amp outlet.

The most you can get out of that outlet is about 75 watts.


REVISIT: ok - you got me thinking, I may have a mistake! I need to go back and revisit the power consumption on that TV. It is a 19" LCD. In my notebook, I have written down the label on the back says it takes 100 watts, but I just looked at a few other LCD TVs and they use far less. It is an el-cheapo so maybe it does...but before I start going to all this trouble, maybe I should verify my facts
I should've also mentioned... I've never heard of a 12v outlet in a trailer only being good for 6 amps. All the ones I've seen are more than that.

Tom
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Old 03-02-2011, 03:02 PM   #13
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yep...it is the receptacle on the Wineguard Amp. Mine says 6...I think the current model goes up to 7.5, but it is not much power.

Sure wish Jayco would put some high power outlets in 2 or 3 places around the camper. It is on my list of projects one day.
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Old 03-08-2011, 08:16 PM   #14
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Ok - so I wanted to circle back on what I discovered....

So my TV was rated at 50 watts. I was wrong on my original estimate, but it is still high for an LCD, but it is first gen so not unexpected. First I tried to use an inverter on the 12 volt power outlet of the Winegard Amp. I was able to fire up the inverter on the outlet, but still had enough voltage drop that the inverter was wining a little bit - so that option is out.

Second I looked into what it would take to just power the outlets thought an inverter via the shore power cord. Again, my diabolical plan was foiled. It seems that they wired the converter power AND the outlet power to the same breaker, so there is no way to just power the outlets. I did not even attempt to hook this up because I am sure the inverter would not have handled the load.

So - my options at this point are

#1 - Pull out the antenna amp and wire right into the 12 volt source. I have my schematic from Jayco and this circuit only goes to the antenna, radio, and LP detector. It is a 15 amp circuit so I could probably get less voltage drop by going right into the supply wires.

#2 - Just hook the inverter up to the battery and use an extension cord.

#3 - try to run new supply wires behind the TV.

Right now I am going to take the easy route and go #2. I dont do it that often at all, but it was an interesting experiment.
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Old 03-27-2011, 08:50 AM   #15
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I just installed an inline switch on the black (hot) wire coming from the converter before the circuit breaker. This will allow me to switch off the converter but leave the outlets in the trailer powered. Now I can plug the shore power into an inverter.
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Old 03-31-2011, 10:49 PM   #16
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I just installed an inline switch on the black (hot) wire coming from the converter before the circuit breaker. This will allow me to switch off the converter but leave the outlets in the trailer powered. Now I can plug the shore power into an inverter.
That's a great idea, I picked up a brand new Xantrex ProWatt 1750 watt inverter at a swap meet for $60. I've been trying to figure out the best way to wire it in. I have a gen but Glacier National Park has limited gen hours.
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Old 04-01-2011, 08:56 AM   #17
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Good idea....I have to get in there and find that wire....Do you have a picture of your setup?
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Old 04-01-2011, 09:18 AM   #18
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Good idea....I have to get in there and find that wire....Do you have a picture of your setup?
I'll snap a couple pics and post this afternoon. I am very pleased with the way it looks.
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Old 04-01-2011, 04:32 PM   #19
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here is two pictures I snapped:

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Old 04-01-2011, 04:37 PM   #20
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Thats a great idea. I will have to get in and look at my load center and figure out where the wire enters the converter.
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