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05-02-2005, 03:55 PM
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#1
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Established Member
Join Date: Nov 2003
Location: Germantown
Posts: 21
M.O.C. #669
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Inverters
Has anyone installed any inverters ? Not the little ones. I'm talking about a 2KW or higher, hardwired system. Any advise and comments would be appreciated.
Thanks,
Dave
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05-03-2005, 09:03 AM
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#2
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Montana Fan
Join Date: Jan 2005
Location: Carpentersville
Posts: 468
M.O.C. #2785
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I think that MOCer Dave Anderson has the MOC killer PV/inverter system.
OTOH, inverters systems are like anything else, you can toss almost infinite amounts of $$$ at them if you want to. I'm considering one for our Monty. For a while I was really excited about a new(er) Xantrex inverter/charger:
http://www.xantrex.com/web/id/40/p/1/pt/8/product.asp
One of the really nice features I was drooling over is:
Power sharing reduces charging current to prevent tripping of AC input breaker
It would be REALLY nice to have the charger throttle itself back to help keep you out of trouble.
However, after thinking about it for a couple of days, I realized that it doesn't mean much since I wanted to wire this thing so that it isn't wired to the A/C, water heater, refrigerator, etc... (so it doesn't drain my batteries if mains power goes out while I'm not there). If it isn't wired to them, then it can't monitor their power use while on the external mains.
I'm back to square 1 about what I want to do....
I have more time & ideas than $$$ at this point so I'm taking my time
Eric
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05-03-2005, 09:32 AM
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#3
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Montana Master
Join Date: Nov 2002
Location: Oceanside
Posts: 20,028
M.O.C. #20
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A lot of us would be interested in your solution, when you get to that point.
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05-03-2005, 11:05 AM
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#4
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Montana Fan
Join Date: Feb 2005
Location: Virginia Beach, VA
Posts: 328
M.O.C. #3149
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I had them add a second battery so I could maybe install an invertor for selective us, like a small freezer in the basement. Then, while discussing with my associates at work (we are all electrical or electronic engineers), I am leaning toward not adding invertor or maybe just a small one.
A normal inveertor uses 10 amps of 12 volt power for each amp of 110 volt it produces. (rough rule of thumb). The pure sine wave units use even more but are really not necessary for most applications.
I would includ a cutout switch between the inverter and the battery with maybe a breaker. If you have a 750 watt inverter, a common yet inexpensive size, you will need a switch/breaker that can handle 60 Amps DC. It should also be a slow blow (delayed trip) so it doesn't cut out with every power spike or intermittant load.
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05-03-2005, 12:20 PM
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#5
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Seasoned Camper
Join Date: Jan 2005
Location: Kalispell
Posts: 85
M.O.C. #2953
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If you do decide on the inverter, I hope you use the proper wiring, as if you don't it will burn up any and everything including the Monty. Paul
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05-03-2005, 01:18 PM
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#6
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Montana Fan
Join Date: Feb 2005
Location: Moultonborough
Posts: 449
M.O.C. #3268
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Eric and Dave,
I am in the process on adding (4) four 6 volt batteries (just got them yesterday), two on each side in battery boxes I made in the front compartment.
I am putting in a Freedom 2500 watt inverter/charger.
I am spliting my power on the panel so that the AC, Ref and water heater are on one leg and all other on the other leg in the panel.
So when the 110 power is hooked up it feeds both legs and if I am on batteries/inverter, it will feed the other leg.
It has a transfer switch so when you plug the trailer in, it changes over to 110 side.
If the 110 power goes out, the only thing I am concerned about is really the ref, and it will automatically change over to gas.
I am also running a 8 gauge wire from my F350 battery bank to the rear of the truck to get better power to the trailer when it is plugged in and towing.
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05-04-2005, 02:50 AM
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#7
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Montana Fan
Join Date: Feb 2005
Location: Virginia Beach, VA
Posts: 328
M.O.C. #3149
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Quote:
quote:Originally posted by carlson
Eric and Dave,
I am in the process on adding (4) four 6 volt batteries (just got them yesterday), two on each side in battery boxes I made in the front compartment.
I am putting in a Freedom 2500 watt inverter/charger.
I am spliting my power on the panel so that the AC, Ref and water heater are on one leg and all other on the other leg in the panel.
So when the 110 power is hooked up it feeds both legs and if I am on batteries/inverter, it will feed the other leg.
It has a transfer switch so when you plug the trailer in, it changes over to 110 side.
If the 110 power goes out, the only thing I am concerned about is really the ref, and it will automatically change over to gas.
I am also running a 8 gauge wire from my F350 battery bank to the rear of the truck to get better power to the trailer when it is plugged in and towing.
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Sounds like you know what you are doing. We just got 1 new 3400RL. Any tips on splitting out the wireing, etc. Did you have a wiring diagram?
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05-04-2005, 04:32 AM
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#8
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Montana Fan
Join Date: Feb 2005
Location: Moultonborough
Posts: 449
M.O.C. #3268
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Joe,
When I have the project done, I will document the whole thing and post it on the web site.
Everything right now is in the planning and layout stage.
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05-04-2005, 08:32 AM
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#9
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Montana Fan
Join Date: Jan 2005
Location: Carpentersville
Posts: 468
M.O.C. #2785
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Quote:
quote:Originally posted by carlson
[...]I am also running a 8 gauge wire from my F350 battery bank to the rear of the truck to get better power to the trailer when it is plugged in and towing.
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Carlson,
Beware of the load you could put on your alternator if you do this.
I ran an 8 gage wire with my old van when I had my TT (only 2 golf car batteries.) My original alternator held up OK with it, but when it was replaced I burnt out two of them in short order. I wound up having a 200amp alternator installed to handle the load. The van would consume up to 85 amps by itself (engine & transmission computers, electric fuel pump, lights, windshield wipers, heater/AC fans, etc...) and my TT would suck up to 50 amps or more. I had a 150 amp ampmeter installed between the alternator and the battery so I KNEW how much I was pulling off of it. One day I was actually drawing 140 amps from the alternator!!!
I would do some research into this before just doing it, or at least be ready for the smell of fried alternator on a holiday weekend when you are out of town (it happened to me)
Eric
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05-04-2005, 09:56 AM
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#10
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Montana Fan
Join Date: Feb 2005
Location: Moultonborough
Posts: 449
M.O.C. #3268
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Eric,
When I spec. out my F350, I ordered it with two (2) alternator, both are 125 amp's, plus the 6.0 has two (2) batteries.
Thanks for post, but I should be OK, I hope!!
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05-04-2005, 11:07 AM
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#11
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Montana Fan
Join Date: Jan 2005
Location: Carpentersville
Posts: 468
M.O.C. #2785
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Quote:
quote:Originally posted by carlson
Eric,
When I spec. out my F350, I ordered it with two (2) alternator, both are 125 amp's, plus the 6.0 has two (2) batteries.
Thanks for post, but I should be OK, I hope!!
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OK. That should do the trick...
Eric
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05-04-2005, 03:22 PM
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#12
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Established Member
Join Date: Jan 2005
Location:
Posts: 28
M.O.C. #3028
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This might be a dumb question...but why are you wanting to add an inverter? Are you trying to run a bunch of stuff off your battery?? Guess I don't really understand here. Any help would be appreciated..
CAUSE now ya got me wondering if I need one or not
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05-04-2005, 05:28 PM
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#13
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Montana Fan
Join Date: Feb 2005
Location: Moultonborough
Posts: 449
M.O.C. #3268
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Gamer1624,
The reason I am going with a battery bank and inverter (2500 watt)is that I don't want to get involved with a generator.
When we are traveling we do alot of dry camping and will not have 110 power.
I have sleep apana, and have to sleep machine that pumps air into my mask and it runs on 110 volts.
If I want to watch some TV or anything else microwave some popcorn, except the ref, water heater or air conditioner, I will be all set.
That is why I chose the batteries and inverter.
Hope it answers your questions.
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05-05-2005, 05:16 PM
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#14
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Established Member
Join Date: Jan 2005
Location:
Posts: 28
M.O.C. #3028
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how do you wire this in so that all your 110 outlets work off this setup?
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05-07-2005, 08:47 AM
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#15
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Montana Master
Join Date: Aug 2004
Location: Cedar Rapids
Posts: 4,876
M.O.C. #1944
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We had solar panels and a Pro-Sine 2.0 inverter installed by Palmer Enterprises of Lake City, FL over a year ago. We also had two 12V D8 Lifeline batteries (sealed, AGM) installed giving us 510 ampere-hours of storage capacity. The comment that is heard about inverters eating up your battery power is not entirely true. It's the usage of electrical appliances that eat up the battery power.
I'd recommend you get a professional installation rather than doing it yourself unless you are highly qualified. Often times you can find someone who "thinks" they are qualified, but I'd steer clear. Palmer Enterprises did a great job on our rig. They also have done a lot of rework of installations performed by other "Solar" companies.
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05-11-2005, 06:51 PM
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#16
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Established Member
Join Date: Jan 2005
Location:
Posts: 28
M.O.C. #3028
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Thanks for the info...I know about the dry camping...just wish the wife would go a bot easier on the H20
I have two 12 volts now...and if we let all 4 slide out without 110...it takes me down to 3/4 power...but if I let it set for 15 minutes...it will normally go backto full????? go figure!!!
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05-11-2005, 07:30 PM
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#17
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Montana Fan
Join Date: Jun 2004
Location: CHEWELAH
Posts: 318
M.O.C. #1654
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Dave , Alot of good info.put out here,I found a 1000watt inv. suited my needs (we carry a 5cu.ft. freezer) with the 4 ,6vlt batts,in serries and paralel to give me 440 amps, which i consider MINIMUM if using an inverter. Besides my solar system, I also have a 40 watt battery charger I can replentish with. TWO VERY IMPORTANT points, put your inverter as close to the batteries as possible,and use HUGH battery wire. This can be a complication because it is deffinatly recomended to NOT put your inverter in the same compartment as the batteries. I mounted mine on the basement wall directlyon the other side from the batt.s with only about 21/2 feet of cable . good luck ......Dave A
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05-14-2005, 03:44 PM
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#18
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Montana Master
Join Date: Jun 2004
Location: San Antonio
Posts: 1,740
M.O.C. #1757
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ols1932. TKS for the tip of using Palmer enterprises of Lake City, FL.
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