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Old 06-27-2016, 12:41 PM   #31
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Originally Posted by klassic View Post
Even thought the panel would only be $250. I don't think my controller is big enough?
What do you think?
You can exceed the nominal wattage ratings of your 30 amp MPPT controller with no problem and it will not void the warranty. The only thing you need to make sure of is that you do not exceed the MPPT controller's max input voltage from your SOLAR panels. For your TS-MPPT 30, you never want your total combined solar panel voltage Voc to exceed 150V( in your coldest temperatures, which is when you get the most voltage out of a SOLAR panel). With that said, having 520W (2 - 260 Watt panels) on a TS-MPPT-30 charging your 12V battery setup is more than fine (assuming the total Voc does not exceed 150V).

Just keep in mind that you will never see more than ~30A going into their batteries. Basically, when they are in bulk and if their array is producing more than ~400W than anything over will just be lost.

I would go with the additional panel and eventually when you win the Canadian lotto, you can purchase a TS MPPT 60 and sell the 30 on eBay

Don
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Old 06-27-2016, 01:26 PM   #32
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The Canadian Lottos aren't taxed, so I'll have enough for more batteries too.

My conclusion after this weekend using the trailer is the residential fridge pretty much never shuts off. Sometimes it uses 4-5a dc, sometimes, 9-12a, once and a while it likes 24a.
I guess it would shut off more if i had it loaded with food, instead of just a couple days worth.

260 watts of solar and 2 6 volt batteries is not enough for a night and a day without killing the 50% rule....needed my reserve battery to close the slides and operate the jacks and pretty much killed that battery too.
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Old 06-27-2016, 01:34 PM   #33
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The Canadian Lottos aren't taxed, so I'll have enough for more batteries too.

NICE!!

My conclusion after this weekend using the trailer is the residential fridge pretty much never shuts off. Sometimes it uses 4-5a dc, sometimes, 9-12a, once and a while it likes 24a.
I guess it would shut off more if i had it loaded with food, instead of just a couple days worth.

When we leave home for a few months, we load the home fridge with gallons of water (or lots of beer). It really keeps the fridge from cycling on and off that much. Same with the freezer, almost full 1/2 gallons of water. Or load it up with ice cream.

260 watts of solar and 2 6 volt batteries is not enough for a night and a day without killing the 50% rule....needed my reserve battery to close the slides and operate the jacks and pretty much killed that battery too.
Don
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2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
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Old 07-14-2016, 07:36 PM   #34
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Klassic - what inverter are you you using? Is it a pure dine wave?
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Old 07-14-2016, 08:12 PM   #35
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It's the Xantrex Pro 1000. Comes installed with the residential fridge.
I had one in my SOB too.
The fan runs way too often and is annoying.
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Old 07-15-2016, 05:55 AM   #36
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When I look at that model on Xantrex's website, it looks like a Modified Sine Wave Inverter. I have read a bunch of times that refrigerator compressors shouldn't be run off Modified Sine Waves and should have Pure Sine Wave. I'm no Electrical Engineer (nor did I stay at Holiday Inn last night), so I am taking that advice at face value.

I did find this on google (because the internet is always right):
"In general, because the total harmonic distortion is higher in modified square wave inverters, motors will run hotter (less efficiently, consuming up to 30% more energy than with pure sine wave inverters), and likely not last as long."

Could it be causing your fridge to chew more power because it is struggling with the power it is currently getting?

Maybe someone that knows more about this stuff could chime in.
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Old 07-15-2016, 07:30 AM   #37
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That's interesting. I know the fridge pretty much never shuts off when on inverter power. I've never paid attention on shore power. Wonder if this is why it runs so much.
The inverter runs my tv with no noise.
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Old 07-15-2016, 07:56 AM   #38
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I have the Xantrex Pro SW 2000 I installed in my trailer, it's a sine wave. The regular Pro series are MSW, not PSW.

I halready had a couple of 1000w MSW units sitting on the shelf but bought the PSW for TV/computer use.
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Old 07-16-2016, 07:19 AM   #39
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Klassic - I'll be curious to hear if you find a significant difference between run time/power consumption on inverter vs shore.
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Old 07-16-2016, 11:30 AM   #40
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Quote:
Originally Posted by Cdash View Post
When I look at that model on Xantrex's website, it looks like a Modified Sine Wave Inverter. I have read a bunch of times that refrigerator compressors shouldn't be run off Modified Sine Waves and should have Pure Sine Wave. I'm no Electrical Engineer (nor did I stay at Holiday Inn last night), so I am taking that advice at face value.

I did find this on google (because the internet is always right):
"In general, because the total harmonic distortion is higher in modified square wave inverters, motors will run hotter (less efficiently, consuming up to 30% more energy than with pure sine wave inverters), and likely not last as long."

Could it be causing your fridge to chew more power because it is struggling with the power it is currently getting?

Maybe someone that knows more about this stuff could chime in.
Interesting thread. Our seismic came with a Xantrex Pro 1800. Modified sine...Also has the residential 23 cu ft fridge, a huge energy monster. We have always gotten thru the night with our 6 AGM batteries. Then I have to run the generator for awhile in the AM. I have 480 watt Zamp system on roof. It takes over and we our again fine for the day and night.

My issue is we have a stackable Whirlpool W/D, I can't get the washer to run off the generator, it is a 5500 watt Onan. Is that due to Modified Sine?? Please chime in............
We boondock almost 100%, this rig has 150 gal fresh water capacity and 90 gal Black plus 90 grey. Who needs to plug in?
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