Forest River Forums
Sunline User Photos


Reply
 
Thread Tools Display Modes
Old 12-01-2011, 06:57 PM   #1
Member
 
shooted's Avatar
 
Join Date: Jun 2011
Posts: 36
Manual Transfer Switch Installation

I had been running my inverter thru the distribution panel for many years by plugging the shore power cord into a 30 amp receptacle that was hardwired to a Xantrex 1800 inverter. If you are familiar with electrical circuits and you take some precautions, this is an inexpensive and easy way to power your entire rv. You must of course first turn off the converter circuit breaker, and any other device that will not operate within the capacity of the inverter and/or batteries, such as the air conditioner, water heater, etc. This setup worked/works very well, but I wanted to avoid flipping circuit breakers and having to go outside to fumble around with the shore power cord when setting up camp for boondocking. I could have gone the traditional route and installed an automatic transfer switch and a subpanel, but these switches must stay energized all the time when in one position or the other. Additionally these switches are not known for their reliability.
My answer was to install a manual transfer switch which does not use any power in any mode, and is highly reliable. I have seen this done with standard double pole/double throw(dpdt) toggle switches, but these switches are not designed for this purpose and must be avoided. As it turned out I already had the perfect switch in my companies inventory for the industrial service work we do. A 6 pole/double throw, 600 volt, 32 amp, rotary switch for switching between two power sources, and an off position to boot! This is very similiar to switches installed in marine applications for this very purpose, but absent in rv applications for some reason. Although marine manual transfer switches are very expensive, they typically only have 2 poles. After using 2 poles for the hot and neutral connections supplying the panel, I had 4 remaining poles to disconnect power to the other items when in inverter mode. This means when in the shore power mode, power is passed thru the switch therefore supplying power to the panel and all of the circuits. However when in the inverter mode, power is still supplied to the panel, but power is interrupted after the circuit breakers to the selected circuits with the remaining 4 poles of the switch. I my case the refrigerator, air conditioner, water heater and converter. It is important to note, to avoid any type of inductance or capacitance issues between power sources, I always "pause" in the off position when switching between modes. Also, the Xantrex 1800 does have a built in automatic transfer switch, but the pass thru is limited to 20 amps if I remember correctly, so this was not an option. If there is any interest in this thread I can provide more details. I have an electrical background so this mod was simple for me to complete. I was so happy with the rough cut for the electrical box I still haven't got back to the finish work, it's been about a year now, maybe someday I"ll fabricate a nice cover! But I have already moved on to the next mod, "waiting on the slow boat from China", as they say! Dennis
Attached Thumbnails
Click image for larger version

Name:	Transfer Switch Ins 001.jpg
Views:	59
Size:	53.4 KB
ID:	9475   Click image for larger version

Name:	Transfer Switch Ins 008.jpg
Views:	69
Size:	57.6 KB
ID:	9476   Click image for larger version

Name:	Transfer Switch Ins 006.jpg
Views:	60
Size:	51.8 KB
ID:	9477   Click image for larger version

Name:	Transfer Switch Ins 009.jpg
Views:	57
Size:	59.2 KB
ID:	9478  
__________________

__________________
shooted is offline   Reply With Quote
Old 02-24-2012, 03:09 PM   #2
Member
 
shooted's Avatar
 
Join Date: Jun 2011
Posts: 36
This is where the switch can be purchased https://www.c3controls.com/cam-switch-changeover.cfm


The switch can be configured with less than 6 poles if desired with a corresponding price decrease. This switch uses the existing panel and breakers so an additional subpanel and breakers is not needed. Keep this in mind when comparing costs between this install and ATS. I found the pull box locally for around $25.00.
__________________

__________________
shooted is offline   Reply With Quote
Old 02-24-2012, 08:24 PM   #3
Senior Member
 
Join Date: Apr 2011
Posts: 313
Nice Mod, thanks for the link to the switch!
__________________
~Andrew
99 F250 Super Cab Short Bed 7.3 Powerstroke
84 24' Yellowstone Camino (oldie)

http://rvpdi.com
Acableguy06 is offline   Reply With Quote
Old 02-24-2012, 08:29 PM   #4
Senior Member
 
Join Date: Apr 2011
Posts: 313
BTW the link doesnt work I had to just go to the web site and find the changeover switches.
__________________
~Andrew
99 F250 Super Cab Short Bed 7.3 Powerstroke
84 24' Yellowstone Camino (oldie)

http://rvpdi.com
Acableguy06 is offline   Reply With Quote
Old 02-25-2012, 12:08 AM   #5
Member
 
shooted's Avatar
 
Join Date: Jun 2011
Posts: 36
Try this one https://www.c3controls.com/cam-switch-changeover.cfm
__________________
shooted is offline   Reply With Quote
Old 03-28-2012, 11:35 PM   #6
Member
 
shooted's Avatar
 
Join Date: Jun 2011
Posts: 36
Finally got around to a wiring diagram.
Click image for larger version

Name:	diagram.jpg
Views:	113
Size:	44.7 KB
ID:	11416
__________________

__________________
shooted is offline   Reply With Quote
Reply

Tags
inverter, manual switch, shore power, transfer switch

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


All times are GMT -5. The time now is 06:10 AM.


Forest River RV News right to your Email!

Stay up-to-date with Forest River news to your inbox

unsusbcribe at anytime with one click

Close [X]