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Author Topic: Help need choosing an Inverter  (Read 8719 times)

ferfer

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Help need choosing an Inverter
« on: September 02, 2010, 05:36:05 PM »
We are thinking of adding an inverter.  I want a pure sine wave due to laptop.   Need help deciding if I want a inverter only or a inverter/charger.

One shop recommended an Go Power GP-SW3000 Pure Sine Wave Inverter ( http://www.gpelectric.com/content/products/ViewProduct/?i=GP-SW3000 ).  I appears to be an inverter and not the inverter/charger the tech. said it was.  I know nothing about this company or how there inverter line rates?  Any insight?

Zantrex ( http://www.xantrex.com/ ) has all lots of inverter & inverter chargers but the one considering Freedom SW3000 inverter/charger seems to have fire issues. 

Other brands?

I am not sure of the function of the charger function of inverter.  I think it allows equalization of batteries and helps control the charging of the batteries???  How does just an inverter function vs inverter/charger?

From above rambling you can tell that I am confused and not even sure how to ask for the information.  Please start on the dummy level and take me to understanding.

Jennifer
2004 Georgie Boy Pursuit 3500DS  aka QSHOUSE
Jennifer, Dan and Scooter

Ned

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Re: Help need choosing an Inverter
« Reply #1 on: September 02, 2010, 05:55:07 PM »
Don't get a pure sine wave inverter just for a computer, they run just fine on modified sine waves.  If you have other electronics that work better on PSW then by all means get one, but if not, save the extra money.  The Xantrex inverter/chargers are excellent and are original equipment on many RVs.  The charger will be a 3 stage model and do a much better job of charging your batteries than most converter/chargers which it will replace.  Size the inverter to the size of your battery bank.  I you have the typical 4 golf cart 6V batteries, then a 2000W unit will be the correct size and will have a 100A charger.  For 6 batteries, a 2500 or 3000W model is better suited.

The function of the inverter is to make 120VAC from the 12VDC batteries.  The charger will have an equalization function if it's needed.
-- Ned -- Fulltimer 1997-2013
1997 Holiday Rambler Endeavor LE
2007 GMC Canyon

Lou Schneider

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Re: Help need choosing an Inverter
« Reply #2 on: September 02, 2010, 06:25:36 PM »
All in one inverters/chargers are convenient, but they're also expensive.  Their advantage is they're plug and play.  When you're connected to AC power, the built in transfer switch sends the AC to your circuits and the charger charges your batteries.   When you disconnect from AC, the inverter is automatically connected to your circuits and all you have to do is turn on the inverter to get power.

If you already have a good multi-stage converter like the Progressive Dynamics you won't gain much by disconnecting it and going with the multi-stage charger in an all in one inverter/charger.   If you have a single stage charger that doesn't charge your batteries well then the multi-stage charger in the alll in one will be an improvement.

Stand-alone inverters are less expensive (often a lot less expensive) but require some manual switching.  You never want to feed AC shorepower into the inverter, so you'll have to arrange a way to switch between shore power and the inverter.   I have a stand-alone inverter so I just put a 30 amp outlet in the compartment where I store the shore power cord.  The outlet is connected to the inverter.  When I disconnect from shore power I plug the end of the shore power cord in the inverter outlet and it sends power to everything in the rig. 

If you're feeding the whole rig with an inverter, either an all in one or a standalone, you'll have to make sure your power hogging appliances stay off when they see the electricity.   Switch your refrigerator to gas only mode, make sure your the water heater's electric element is turned off, etc.

If you're doing this with a standalone inverter, you'll also have to turn off the converter.   Otherwise you'll set up a loop consisting of drawing 12 volt power out of the batteries, going through the inverter to get 120 volts, passing through the converter to get 12 volts and sending that power back into the batteries.  Since each stage is less than 100% efficient this wastes a lot of battery power.

Or just run the output of the inverter directly to the appliances you want to run from it, independently of the rest of the rig's electrical system.  Put an outlet next to your laptop, etc. and turn on the inverter when you want to use them.  If you're plugged into electricity the power will come from the converter, so you won't be pulling power from the batteries.

The size of the inverter depends on what you want to run from it.   If you want to run your laptop, the TV, DVD player and satellite dish, for example, you can get by comfortably with a 600 - 1000 watt inverter and your existing batteries.  If you want to run the microwave, the coffeemaker, a hairdryer, etc. you'll have to step up to a 1500 or 2000 watt inverter and at least 4 batteries. 

I know this is a lot of information, so I'll stop now (finally!)   :)
« Last Edit: September 02, 2010, 06:39:56 PM by Lou Schneider »

ferfer

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Re: Help need choosing an Inverter
« Reply #3 on: September 02, 2010, 06:38:58 PM »
Ned, we are going with 4 Trojan T105 which I think is 450Ah.  If I go with modified sine wave what do you think about the Xantrex RV Series GS:  http://www.xantrex.com/power-products/inverter-chargers/rv-series-gs.aspx

Is this what I should be looking at or another model.  I did not see and modified sine wave inverter that was a charger also but maybe I did not look hard enough.

I am not sure what will not work with modified sine wave but I had heard some laptops did not play well.  Is there a list?

Oh Ned, totally off topic, but I just got notice that the Kindle 3 has just shipped.  Hope to have it in 3 to 5 days.  Let you know more when I know.

Thx,  Jennifer
2004 Georgie Boy Pursuit 3500DS  aka QSHOUSE
Jennifer, Dan and Scooter

Ned

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Re: Help need choosing an Inverter
« Reply #4 on: September 02, 2010, 07:07:20 PM »
The 4 T105 batteries are rated at 440AH so you want a 2000W inverter.  Whether you need an inverter/charger depends on what you have now for a converter/charger, as Lou describes.

I don't know of any computers that don't work well on MSW and we've had a lot of different ones in the past 13 years, all run on our Heart 20D MSW inverter.

I would be interested in your report on the Kindle 3.
-- Ned -- Fulltimer 1997-2013
1997 Holiday Rambler Endeavor LE
2007 GMC Canyon

ferfer

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Re: Help need choosing an Inverter
« Reply #5 on: September 02, 2010, 07:11:02 PM »
Oh Lou, please do not stop  ;D  Yep, lots of info. and I need to read it again :o and then have Dan read it too.

I do not know what converter we have but think not a good multi-stage converter.  I think it is a single stage.  I know it is flat looking so about 2x4x8+ and located in storage compartment  ;).  Helpful ain't I?  ::)

We are thinking inverter to power the computer(s), TVs (2), DVD, TV satellite dish, electric sockets in kitchen and dinning area, coffee pot, perhaps adding a reading light and maybe the electric socket in the bedroom.  Thinking of using generator for microwave and few times hair dryer used (my hair short-can brush & go).  We will need to recharge various devices (computers. cell phones etc.).

Given the above, how long could a 2000 watt inverter provide power before recharging batteries?

Later on the rest after Dan has read it too,

Jennifer
2004 Georgie Boy Pursuit 3500DS  aka QSHOUSE
Jennifer, Dan and Scooter

ferfer

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Re: Help need choosing an Inverter
« Reply #6 on: September 02, 2010, 07:25:20 PM »
Really stupid questions:

So if I increase the battery Ah then do I need to increase the inverter watts required or does that just allow the inverter to provide power longer? 

Does the inverter watts rating relate to running all the devices connected at the same time?

Jennifer (DH knows this)
2004 Georgie Boy Pursuit 3500DS  aka QSHOUSE
Jennifer, Dan and Scooter

Ned

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Re: Help need choosing an Inverter
« Reply #7 on: September 02, 2010, 07:40:08 PM »
You can use any size inverter with any size battery bank but it works best if they are matched.  You could add 2 more 6V batteries, for a total of 660AH, and still use a 2000W inverter.  You will be able to run on the inverter for a longer time and the charger, if you have an inverter/charger, will take a bit longer to charge the batteries.  Choose your inverter size based on your power requirements.  For your needs, as you described, a 2000W inverter should be adequate.  If you need an inverter/charger, the Xantrex Freedom series is a good choice and very common in RVs.

Yes, the inverter watts are the maximum load you can place on it at one time.  Keep in mind that a 2000W load on the inverter will result in about an 160A draw on the batteries.  At that rate, they will last for less than 2 hours before needing recharging.
-- Ned -- Fulltimer 1997-2013
1997 Holiday Rambler Endeavor LE
2007 GMC Canyon

ferfer

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Re: Help need choosing an Inverter
« Reply #8 on: September 02, 2010, 08:20:08 PM »
I was not thinking of adding more batteries but increasing the Ah by going to the four Trojan T125 or T145.  That gain in Ah would be nice but I am guessing not enough to worry about in the real world.  I do have the height room for the L16 batteries if that would be adviseable in the future. 

Dan is putting together a chart of each device power requirements -- and yes there will be errors.  We do not plan on using everything at once so hope never to get near that 2000W load.  Thinking 4 to 6+ hrs. TV, 2 hrs. coffee pot on, and lots on computer in future when I can connect online.  I do not have a cell phone yet so no air card nor any other method if no wifi available.  Lots of Kindle reading  :-*

Given our current converter I am leaning toward the inverter/charger.  (unknown if our converter helped kill the 2 12 V batteries the T105 replacing)  I still do not understand the difference between the Xantrex Freedom series and the Xantrex RV Series GS.  Need to do more study.

Thanks once again for all you help, invaluable!
Jennifer
2004 Georgie Boy Pursuit 3500DS  aka QSHOUSE
Jennifer, Dan and Scooter

Gary RV_Wizard

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Re: Help need choosing an Inverter
« Reply #9 on: September 02, 2010, 09:30:04 PM »
Quote
I did not see and modified sine wave inverter that was a charger also but maybe I did not look hard enough.

 ??? The Xantrex GS inverter you linked to is a modified sine inverter with charging function.

« Last Edit: September 02, 2010, 09:32:46 PM by RV Roamer »
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Ned

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Re: Help need choosing an Inverter
« Reply #10 on: September 03, 2010, 07:59:51 AM »
And all the Freedom 458, HF and HW series are modified sine wave inverters with charger.
-- Ned -- Fulltimer 1997-2013
1997 Holiday Rambler Endeavor LE
2007 GMC Canyon

John From Detroit

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Re: Help need choosing an Inverter
« Reply #11 on: September 03, 2010, 09:48:03 AM »
The amp hour difference in the batteries you cited is not that great. 
T-10-5 is what 220 amp hour.. T-145 is 260

That's 40 amp hours difference, less than 20 percent

Not really that great.. However if the existing batteries are in need of replacement....

GO FOR IT
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BB

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Re: Help need choosing an Inverter
« Reply #12 on: September 03, 2010, 09:56:10 AM »
Mangum Energy and Outback are two high end manufacturers, made in the US.

Since we have only two 12 batteries I went with the MMS series by Magnum-

ferfer

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Re: Help need choosing an Inverter
« Reply #13 on: September 03, 2010, 03:52:54 PM »
Talk some with Dan and he still wants the pure sine wave even if it cost more.  This weekend he hopes to complete the power requirements chart. 

John, we just replaced the 2 dead 12V with 2 Trojan T105.  Need some tray modification for the next two.  Time crunch delayed that.

BB, thanks for the other inverter brands.  Checked out the Magnum site and it lead me to 2 local companies which may be able to provide info. and perhaps install.  The OutBack webpage gave me a virus warning so did not go there. 

RV Roamer, once you said it I knew the Xentrex GS was modified  Duh   :o

Hope to have more info. soon... and likely questions. 

Thanks again for your help.  I sure do need it.

Jennifer

2004 Georgie Boy Pursuit 3500DS  aka QSHOUSE
Jennifer, Dan and Scooter

Ned

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Re: Help need choosing an Inverter
« Reply #14 on: September 03, 2010, 04:06:58 PM »
Magnum makes some popular inverters also, so it's a good alternative to the Xantrex models.  As long as the price doesn't affect you, get a PSW inverter, you may need it for something later anyway.  Do get a optional remote control panel for whatever inverter/charger you buy.  The standard panels are almost useless.
-- Ned -- Fulltimer 1997-2013
1997 Holiday Rambler Endeavor LE
2007 GMC Canyon

Gary RV_Wizard

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Re: Help need choosing an Inverter
« Reply #15 on: September 03, 2010, 04:08:14 PM »
The Xantrex Prosine is pure sine wave inverter/charger. Comes in 2kw and 3 kw models. Magnum has good ones too.

You still need to address whether you want to keep your existing converter charger and add an inverter, or replace the converter/charger with an inverter/charger combo.

In any case, the major chore is figuring out what circuits in the house should be powered by the inverter and somehow managing to wire them to it.   Moving circuits from the existing load center to the inverter can be fairly simple or a nightmare, depending on how the coach is physically layed out.

Another choice is to simply plug the whole coach into the inverter outlet(s), but that means you have to do some manual shutdowns of the existing converter charger first and you would also need to manually shut off major power appliances, since you don't have enough power for everything.
Gary
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BB

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Re: Help need choosing an Inverter
« Reply #16 on: September 03, 2010, 07:44:12 PM »
The charging rate could be a factor in buying also;  we got Powertech AGM batteries, by Deka, US made in PA I believe and I was told that a 50/75A charge rate was best, some of the inverters throw an awful lot of amps into the batteries when charging.

Also, I was told that Xantrex has gone Chinese-can anyone confirm this?

Has anyone looked at where all the toothpicks are from lately?????

Forgot all about this site, some good info

http://solatrontechnologies.com/

After the glitzy intro you can scroll down a bit and see a menu box , check out the inverter section.
« Last Edit: September 03, 2010, 08:00:16 PM by BB »

Gary RV_Wizard

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Re: Help need choosing an Inverter
« Reply #17 on: September 04, 2010, 07:45:46 AM »
A good quality charger won't ever overcharge a battery, no matter how large its peak rate may be, nor how few/small batteries you may have. The rate is adjusted to what the battery can handle effectively. Most inverter/chargers have a good three stage charging algorithm.
Gary
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BB

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Re: Help need choosing an Inverter
« Reply #18 on: September 04, 2010, 08:50:08 AM »


Does voltage or current vary.
« Last Edit: September 04, 2010, 08:57:18 AM by BB »

Ned

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Re: Help need choosing an Inverter
« Reply #19 on: September 04, 2010, 09:58:00 AM »
Does voltage or current vary.

Yes.  In bulk mode, the current is held constant as the voltage rises.  When it reaches a predetermined value, say 14.4V, then the charger goes into acceptance mode, holding a constant voltage, say 14.4V as the current drops.  When the current drops to a predetermined value, say 2% of the battery capacity in AH, the charger enters float mode, holding a constant voltage, typically about 13.5V for flooded cell batteries.

The values I used above are the defaults for my Heart 20D inverter/charger.  Most of them can be changed using the Link control panel.  I would expect other 3 stage chargers to work in a similar fashion.
-- Ned -- Fulltimer 1997-2013
1997 Holiday Rambler Endeavor LE
2007 GMC Canyon

Stevemo

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Re: Help need choosing an Inverter
« Reply #20 on: August 29, 2015, 09:43:07 PM »
Hi all!

This thread has some really good information so I thought I would try to bring it back to life rather than start the whole discussion over again.

I have a 1991 Roadtrek Class B with two Trojan T-105 batteries and I want to get a 2000W inverter for it.  Why?  To make coffee with a Keurig when I'm in the US.  I'd also use it for watching movies with a TV and built-in DVD player but that's under 100W so not too worried about that.  We don't use the microwave or anything else that's AC in the van.

Is this feasible from a practical point of view?  The Keurig coffee makers are 1500 Watts and it would be run for about 10 minutes before recharging the batteries while driving. 

I "think" I want a combo inverter/charger as the van still has the original Progressive Dynamics single stage charger.  It would also provide an automatic transfer which is nice.

That being said, does anybody have experience with running a coffee maker on just a pair of batteries and a 2000W inverter?  What are the preferred inverter/chargers people are using these days?

Cheers, Steve

jyro

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Re: Help need choosing an Inverter
« Reply #21 on: August 29, 2015, 11:04:18 PM »
I found a used tripp-lite APS-2012 inverter /charger. I mounted in the back storage compartment behind the water storage tank. I even had room for a deep cycle battery behind it. I just use it for the residential frig. I installed to run it while on the road not running the generator.  It will run a cycling cold frig for 10 hours. then I either have to plug in or start the generator.
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Stevemo

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Re: Help need choosing an Inverter
« Reply #22 on: October 01, 2015, 07:54:38 PM »
I wound up buying a Samlex PST-2000-12 Inverter and RC-200 control screen.  They have been in the business for a long time so it seemed like a good bet.
I used a 2' and 3' length of 2/0 DLO cable to hook things up and it worked with a 1500W blower heater.  I only ran the heater for a minute but it worked with freshly charged batteries and nothing exploded or beeped so I'm happy with that. :)
Gotta lug the Keurig out to the van to make sure I can brew a few cups of coffee but the first test and the math looks like it will work. 
Steve

JiminDenver

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Re: Help need choosing an Inverter
« Reply #23 on: October 01, 2015, 10:38:07 PM »
Last year we used a auto drip with a 3000w inverter and a 8-D which is the equivalent of two regular sized batteries. The only difference is I also had a 490w solar system boosting the battery and holding the voltage up with 30+ amps. It would also let us use the 900w microwave pulling 1375w for 10 minutes. The battery could only run the microwave for a few minutes without the solar.

How are you planning on replacing the power it takes to run the Keurig?

Stevemo

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Re: Help need choosing an Inverter
« Reply #24 on: October 03, 2015, 07:49:18 PM »
Hi Jim,
  We drive our van every day we are on vacation so we would just use the alternator to recharge the batteries.  We could even run the van to keep the voltage up while making coffee if necessary, time will tell.

Link to some photos:  http://dodgeforum.com/forum/dodge-ram-van/390414-addition-of-2000w-inverter.html

Regards, Steve

Just Lou

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Re: Help need choosing an Inverter
« Reply #25 on: October 03, 2015, 08:01:16 PM »
You might wish later that you hadn't installed the inverter in the same confined area with the batteries.  You are inviting a corrosion problem in the electronics as well as a fire hazard (explosion, actually) with the gasses dispelled during battery charging.
« Last Edit: October 03, 2015, 08:04:14 PM by Just Lou »
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Gary RV_Wizard

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Re: Help need choosing an Inverter
« Reply #26 on: October 04, 2015, 09:46:24 AM »
Agree strongly with Lou, unless they are sealed batteries, e.g. AGM or Gel. Flooded cell batteries can and do release a lot of acidic fumes when charging.
Gary
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grassy

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Re: Help need choosing an Inverter
« Reply #27 on: October 05, 2015, 07:40:03 AM »
Electrics just turns my mind  into a bowl of jelly.  I really don't understand the recharging part of this discussion.

We are looking at an inverter when we boondock..mainly at wally mart etc..  to run my cpap (however, the coffee maker and laptop sound good as well).  We have 2 6 volt (I think in the 5er) and we never disconnect from the TV which has 2 12 V batteries.

I thought we would would have to wire it in from the RV battery but it would be great just to plug the the cpap into an existing plug..

I am going too need help on this one...

Thanks..

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Stevemo

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Re: Help need choosing an Inverter
« Reply #28 on: October 05, 2015, 06:15:14 PM »
Venting is definitely required.  The 1/2" plywood seals the batteries from the coach and there is venting on the side of the van for them.  I just need to notch the wood so I can bring the cables out to the inverter, that has not been done yet but will be.  You do not want the Hydrogen filling up the coach while recharging.
I also need to figure out how much venting will be required for the seat assembly as the inverter needs to breathe in there too.  Luckily I'll only be using it for a few minutes at a time so heat should not be much of an issue.
Regards, Steve

Stevemo

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Re: Help need choosing an Inverter
« Reply #29 on: October 05, 2015, 06:20:11 PM »
Grassy:  You will want to test the CPAP to see if it needs a "true sine wave" inverter or if it can get by with a "modified sine wave" like walmart probably sells. 
The CPAP should have some markings on it somewhere that indicates how many Watts it uses.  That will be required to size your inverter and your batteries.  Coffee makers are toasters are in the 1500 to 2000 Watt range.

I would keep the tow vehicle batteries separate from the coach batteries unless the engine is running.  Nobody is going to be able to boost you if you are 24 Volts.

Steve

Gary RV_Wizard

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Re: Help need choosing an Inverter
« Reply #30 on: October 06, 2015, 10:29:18 AM »
Quote
I really don't understand the recharging part of this discussion.

A battery is just a storage tank for electrical power. You take power from the battery(s) to operate the inverter, so the "tank" will eventually empty and the inverter stops working. Since an inverter uses a lot of 12v power, that "eventually" is usually sooner rather than later.

The recharging business is about putting more power back into the batteries for future use.  If you use half the power in the battery "tank", you need to put that back for the next time you want it.  If it was a water tank, you could probably do the gallons arithmetic easily enough, but few people are used to counting their electricity usage except by the size of the bill each month.
Gary
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JiminDenver

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Re: Help need choosing an Inverter
« Reply #31 on: October 06, 2015, 11:06:00 AM »
Batteries like to be recharged as soon as possible, the longer they wait the more unhappy they get. Even though a coffee maker or microwave only runs a short time, they use a lot of power doing so. Keeping the truck running while you do it and leaving it running after will help but you really need a good charge to maintain the health of the battery.

Jeff

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Re: Help need choosing an Inverter
« Reply #32 on: October 06, 2015, 11:59:00 AM »
Electrics just turns my mind  into a bowl of jelly.  I really don't understand the recharging part of this discussion.

We are looking at an inverter when we boondock..mainly at wally mart etc..  to run my cpap (however, the coffee maker and laptop sound good as well).  We have 2 6 volt (I think in the 5er) and we never disconnect from the TV which has 2 12 V batteries.

I thought we would would have to wire it in from the RV battery but it would be great just to plug the the cpap into an existing plug..

I am going too need help on this one...

Thanks..


I have run CPAPs for 11 years in 3 different motorhomes and would offer the following observations.


1. I have used Resmed and Respironics units on MSW inverters without any problems.


2. Some models have 12 volt capability that removes the necessity of an inverter but my Remstar powered the pump only on 12 volt, not the heater in the humidifier.


3. Powering the CPAP with an inverter that runs major circuits in the RV will consume much more power overnight than a smaller dedicated inverter running only the CPAP. Our Xantrex normally shows a 10-15 amp draw because of overhead and all the various appliances and wall warts plugged into it and that is before turning anything like the CPAP on.


4. It is really quite simple to install a small 500-600 Watt automotive inverter near the batteries (Not in the same compartment) and then run coax to the location you need power for your CPAP. I have installed a separate outlet for the inverter power and if I unplug the CPAP in the AM the inverter shuts down without a remote switch.






 

Jeff

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Re: Help need choosing an Inverter
« Reply #33 on: October 06, 2015, 12:14:23 PM »
I would also add a couple of thoughts to the discussion of inverters. While it is certainly simpler to feed the entire coach through the new inverter there will be times you want a circuit or two that are not fed by inverters.


We burned up the main board of our Xantrex inverter because all outlets inside the coach were wired through the inverter sub panel and when the park lost power one night in a thunderstorm the inverter powered the cube heater we had running when we went to bed. Unfortunately the batteries lasted longer than the inverter.


If you decide to install a separate inverter and leave the current charging system in place the XantrexPro Series  provide 1800 Watts and a 25 amp AC pass-through switch built into the inverter. I use one to power our Samsung refrigerator, the Sat receiver and my CPAP and it automatically switches to shore or generator power when available.
« Last Edit: October 06, 2015, 12:43:29 PM by Jeff »

grassy

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Re: Help need choosing an Inverter
« Reply #34 on: October 09, 2015, 07:06:35 AM »
OK...been doing a bit of research.

I can buy a battery pack for this ..really expensive in my mind and I have never had much luck with batteries so I don't see this in my future.

I am perplexed on how to figure out if I need a pure sine wave...

What I own is a "Philips Respironics System One Auto A Flex with Heated Tube Humidifier" .

The electrical Requirements are 100 - 240 VAC, 50/60 Hz, 12volt DC ..but that doesn't really tell me what the draw is.

If we buy an inverted to run this, can we run a radio and / a coffee maker ?

Thanks...I am lost in the woods with this one...
2001 Freightliner FL60 Sport Chassis, 3126b, Jake, Air... Brakes, Cab & Rear Suspension, Ultra Shift
2010 Northwood Arctic Fox 29-5T (Silver Fox Edition)

Alfa38User

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Re: Help need choosing an Inverter
« Reply #35 on: October 09, 2015, 09:52:21 AM »
OK...been doing a bit of research.

I can buy a battery pack for this ..really expensive in my mind and I have never had much luck with batteries so I don't see this in my future.

I am perplexed on how to figure out if I need a pure sine wave...

What I own is a "Philips Respironics System One Auto A Flex with Heated Tube Humidifier" .
The electrical Requirements are 100 - 240 VAC, 50/60 Hz, 12volt DC ..but that doesn't really tell me what the draw is.

If we buy an inverted to run this, can we run a radio and / a coffee maker ?

Thanks...I am lost in the woods with this one...

I found this here, if it helps (and if I picked the correct model!!):
http://www.cpapsupplyusa.com/pdfs/Philips%20Respironics%20REMstar%20Auto%20User%20Manual.pdf

Electrical
AC Power Consumption: 100 – 240 VAC, 50/60 Hz, 2.1 A
DC Power Consumption: 12 VDC, 5.0 A
Fuses: There are no user-replaceable fuses.
« Last Edit: October 09, 2015, 10:08:26 AM by Alfa38User »
Stu
Montréal, Canada 🍁
Snowbird, Naples Florida
Alfa Gold 38 (2000) 5ver (parked!)

"Of course I talk to myself, sometimes I need expert advise!!!"

grassy

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Re: Help need choosing an Inverter
« Reply #36 on: October 09, 2015, 10:02:38 AM »
Thanks..so a 300 watt would be dandy ?  And would that be with my humidifier ?  Sorry, total dweeb with this..

Thanks

PS - thanks for the manual !!!
2001 Freightliner FL60 Sport Chassis, 3126b, Jake, Air... Brakes, Cab & Rear Suspension, Ultra Shift
2010 Northwood Arctic Fox 29-5T (Silver Fox Edition)

Jeff

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Re: Help need choosing an Inverter
« Reply #37 on: October 09, 2015, 09:11:10 PM »
Grassy


Inverters are not 100% efficient so I would suggest 500-600 watts for the CPAP. A coffee maker will probably use closer to 1200 watts (Check your appliance's rating), the radio will probably run on 100-200 watts but again check the requirements.

grassy

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Re: Help need choosing an Inverter
« Reply #38 on: October 10, 2015, 06:56:48 AM »
Grassy


Inverters are not 100% efficient so I would suggest 500-600 watts for the CPAP. A coffee maker will probably use closer to 1200 watts (Check your appliance's rating), the radio will probably run on 100-200 watts but again check the requirements.

Thanks..I can now start shopping.

grassy
2001 Freightliner FL60 Sport Chassis, 3126b, Jake, Air... Brakes, Cab & Rear Suspension, Ultra Shift
2010 Northwood Arctic Fox 29-5T (Silver Fox Edition)

grassy

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Re: Help need choosing an Inverter
« Reply #39 on: December 23, 2015, 02:19:46 PM »
I am not sure if this is relevant for other cpap users but I will pass it on. Many may already know this but it is new to me :)

I was in the supply company that sold me my machine and I asked them about what size / type inverter I need to buy for my trailer.  Apparently, mine cpap machine does not need one.  As an option, I can buy a unit or adapter for  23 $s.. that will allow me to plug my machine into a cigarette lighter socket or hook directly on to a battery...so, all I need to do is have my son, the electrician,  do a little modification and give me a plug beside the bed.

With the 2 deep cycle 6 volt batteries in the rig and the 2 massive 12 volt in my tv, I think I am good to go when we are boondocking on the road..

grassy
2001 Freightliner FL60 Sport Chassis, 3126b, Jake, Air... Brakes, Cab & Rear Suspension, Ultra Shift
2010 Northwood Arctic Fox 29-5T (Silver Fox Edition)

 

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