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Topic: Auto Xfer switch with Inverter, how to bypass converter

Posted By: blarsony on 03/19/07 08:53pm

I am getting ready to install a 30amp auto xfer switch from camping world into my 5er to switch between shore and inverter. What is the easiest way to bypass the converter? I have used a relay in the past (radio shack) do I need to resort to that again, or will the auto xfer have some sort of converter disabling capacity?


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Posted By: 2oldman on 03/19/07 09:21pm

To my knowledge there's no magic converter disconnect in your xfer switch.

If this is a whole-house install, the easiest is to simply flip the converter breaker. Otherwise, you'll have to switch off the con yourself.

If this is not a whole-house install, then don't put the converter on the inverter output.

The easiest of all is to get an inverter/charger with its own xfer switch, but it's probably too late for that.


Posted By: Hurricaner on 03/20/07 04:33am

Quote:

or will the auto xfer have some sort of converter disabling capacity?

Nope, subpanel or install a breaker before the transfer switch for the converter.

Sam


Sam & Kari
Hurricane, Utah


2004 34' Damon Challenger 315


Posted By: smkettner on 03/19/07 10:36pm

The best way is to have a sub panel. The sub panel will be fed from a breaker in your current panel or the inverter. The transfer switch decides and changes the source. The sub panel will feed only the circuits you want powered from the inverter, ie microwave & service receptacles. The converter, A/C, electric water heater would stay at the main panel and never get power from the inverter.


Posted By: Photog101 on 03/20/07 12:11am

With a whole house inverter, is there not a way to not feed the converter, yet leave the batteries operate the 12 volt lights and recepticles? All my lights, radio, bedroom TV and TV antenna amplifer oh yes, and the fart fan are 12 volt and I would like to use some of these while using the inverter.

OR, does it really matter for short term inverter use like making coffee in the morning or warming up things in the microwave?

"Doc"


Combat Vietnam Veteran Support our troops for serving our great country.
1997 Veri Lite RL1200 on a '02, K3500, CC, DRW, 8.1L, Allison, 4.1 gears, Bridgestone 225/70R19.5 tires.



Posted By: Golden_HVAC on 03/20/07 05:04am

I would use the shore power to feed the transfer switch and install a Edison base fuse holder with a 15 amp fuse in it. Then use #14 or #12 wire to go from the shore power input line to the fuse holder than a new receptical that the converer or factory battery charger is plugged into.

Edison base fuse holders look much like a standard light fixture bulb holder, and edison base fuses are the old screw in fuses found in very old homes. Yes 1930's tecnoligy, but it still works great!

The other way is to feed the inverter loads to a 4 circuit sub-panel. This is what I did with the last inverter I installed. It feeds just the recepticals in the RV, not the microwave - that can be damaged by running on modified sine wave power, or the electric heater circuits in the coach. I installed a 30 amp circuit breaker to feed this new subpanel, and a 15 amp breaker to feed the factory battery charger.

Fred.


Posted By: rcwaz on 03/20/07 05:57am

In my Carri Lite 5th wheel I was lucky that everything I wanted to power off the new inverter was on one circuit in the 120v panel. I used two 3-way switches below the panel to switch that circuit to the inverter. That powered the audio & visual systems and satelite, coffee maker, and an outlet by the bed for my CPAP machine. Six, 6 volt batteries allowed me to go a week with out firing up a generator. With this method I did not have to remember to disconnect heaters or to switch the fridge which I would have had to do if I used the inverter through the auto transfer switch to power the whole rig.


Posted By: wa8yxm on 03/20/07 07:13am

The easiest way to bypass the converter is very simple

Install a one breaker box, hook it to the SHORE POWER leads on the transfer switch This way your line looks like this

Shore power -----------------Transfer switch----------Main panel
..............|--converter............|-- Inverter

Hopefully it all lines up fairly close Look at the periods as spaces


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377



Posted By: RJgonfshin on 03/20/07 07:29am

blarsony wrote:

I am getting ready to install a 30amp auto xfer switch from camping world into my 5er to switch between shore and inverter. What is the easiest way to bypass the converter?


Wow, some posts w/ such positively wrong information !

But the right ones are right. Mine also is a whole house install. The converter input circuit is now fed from the shore power side of the transfer switch. Very simple, and works great.


Rich

' 98 Flair, 454, Onan Microlite 4k, Intel PD 9155 w/ wizard, Sta-power 1500 watt Inv, 2 6v batts, ammeters, Oly Catalytic Heat, hauling 2 Bent Bikes and sometimes towing a Tracker F&S boat.



Posted By: klenger on 03/20/07 07:33am

You need a sub-panel if you want to power stuff like the MW. For my smaller 400 watt inverter, I simply switch the power to the wall outlets at the main panel, but it gets more complicated when you want to run other appliances. See the link in my sig on RV Solar to see how mine is done.


2008 Tiffin Allegro 32BA FRED Class A Motor Home

Looking at trading for a Winnebago Access 31C Class C



Posted By: RJgonfshin on 03/20/07 08:24am

klenger wrote:

You need a sub-panel if you want to power stuff like the MW.

I do ? Why ?

My MW works great on inverter,.....w/o sub panel


Posted By: jmanatee on 03/20/07 08:36am

This is how I did mine http://www.outerland.com/rv/P_Inverter.cfm?whatarea=P

There is a description of parts and a wiring diagram...


Jon

RV Web Site | 50 Night Cross Country Trip
Our Solar Install | Roof Replacement Project

Twenty years from now you'll be more disappointed by the things you
didn't do than by things you did. Explore, Dream, Discover. Mark Twain

2008 Monaco Cayman XL 38PBD



Posted By: jspringator on 03/20/07 04:44pm

For those finding this post while planning their own system, the easiset thing to do is get a combination inverter charger. It switches automtically. You will still need a transfer switch where the cord and inverter connect to the main panel so the plug won't be hot when you are on inverter power.


Jim & Sherri
05 Jayco Eagle 308 FBS, Dual Cam
2001 Ford Excursion 4.30 LSD,V-10,2WD,RAS,5-Star tuner
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2000 watt Tripp-Lite inverter/charger APS 2012
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Posted By: blarsony on 03/20/07 07:17pm

Thanks All! Great information. I am doing a whole house install and using a sub-panel so I can dtermine what gets powered only by the inverter. thanks again for all of the data it really does help, what a great forum.


Posted By: 2oldman on 03/20/07 07:47pm

blarsony wrote:

I am doing a whole house install and using a sub-panel
It's either whole-house or subpanel.


Posted By: blarsony on 03/21/07 08:40pm

Hmmm... Think I have both.

I am routing the wall outlet, micro, and exterior outlet lines to a sub-panel with same breaker setup as the OEM.

Then running a line from the original panel(Shore cord)and one from the inverter to the auto-xfer(in).

Then a line from the auto-xfer(out)to the subpanel.

So if my mapping is correct and the instructions that came with the unit, when shore is hot everything is hot, when the inverter is hot only the sub panel gets hot.

Brent


Posted By: John & Angela on 03/21/07 09:34pm

Heres a transfer switch that you can simply plug your converter into. You can also plug your fridge into the same plug (via a splitter) so that it doesn't come on. Simply disconects the converter/fridge plug when on inverter. Let me know if you need a supplier. I installed a couple of these last year and found them in a couple places. Work well and have an optional twenty second delay. Real simple and properly done install.

http://www.gpelectric.com/PDF/inverterAccessories/M_GP-TS.pdf

John


2003 Revolution 40C Class A. 2002 Vanguard 22 foot Class C. Diesel smart car as a Toad on a smart car trailer or pulling a 2009 Timeout Tent Trailer.

Life is not measured by the number of breaths we take but rather by the moments that take our breath away.


Posted By: blarsony on 03/22/07 06:10am

John & Angela wrote:

Heres a transfer switch that you can simply plug your converter into. You can also plug your fridge into the same plug (via a splitter) so that it doesn't come on. Simply disconects the converter/fridge plug when on inverter. Let me know if you need a supplier. I installed a couple of these last year and found them in a couple places. Work well and have an optional twenty second delay. Real simple and properly done install.

http://www.gpelectric.com/PDF/inverterAccessories/M_GP-TS.pdf

John


I LIKE where can they be purchased? Thanks!

Brent


Posted By: John & Angela on 03/22/07 07:53am

Call these guys and ask them for an American Distributor. Ask for Sean.

http://www.soltek.ca/

They are built in Victoria BC Canada but I'm sure there is an American Distibutor. Otherwise talk to Lyn at this place http://www.rosmanrv.com/parts.html

snd tell her John sent you.

Good luck with the project.


Posted By: armys2 on 03/22/07 02:32pm

RJgonfshin wrote:

blarsony wrote:

I am getting ready to install a 30amp auto xfer switch from camping world into my 5er to switch between shore and inverter. What is the easiest way to bypass the converter?


Wow, some posts w/ such positively wrong information !

But the right ones are right. Mine also is a whole house install. The converter input circuit is now fed from the shore power side of the transfer switch. Very simple, and works great.


EXACTLY! That's the way I did mine too, simplest, and cheapest, no need for subpanel. Just make sure you fuse the converter input, and of course have the fridge set to propane and don't use the air when on inverter.


2011 Chev D/A 3500HD CC 4x4
2004 Harley Davidson Ultra Classic
2006 Titanium 36/41 MPRV


Posted By: Listermann on 03/22/07 03:48pm

I just installed a Radio Shack relay in ours this week. I used a 12V coil relay rated for 120/240 volts. The coil is operated by a toggel switch on the control panel. The normally open contacts turn on the inverter and the normally closed contacts interupt the converter supply.

I found that my converter sucked up 900W worth of the 2000W inverter's output. That was unexceptable.

Now I need to replace the toggle switch with one that is piloted.


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