Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 05-21-2014, 08:59 AM   #1
MariannRobin's Avatar
Newmar Owners Club
Freightliner Owners Club
Join Date: Sep 2011
Posts: 44
xantrex RC7 - what does it do?

Hi. We are Newbies -been in our coach since Apr 6 - and are not quite sure what the RC7 does. First I will give you the basics on our power systems - we have a 2004 Newmar Kountry Star with a 2000 watt inverter, 4 batteries, 7.5kw on-board onan generator, 100 watts of solar permanenty hooked to the batteries and another 440 watts available (portable)
We have 10 watts of shore power at this time, which is just enough to keep the lights, tv and furnace etc (basic stuff) going, but not enough to run the microwave etc. My DH read the manual, and he thinks the system should cut to the inverter if needed, without unplugging the shore power. Is this correct?
He wants to know if he needs to unplug the shore power if he wants to use the generator. Please help! We need your advise!
I want to know how much we can run on the batteries, if we use the solar panels. Can you use the Microwave/Convection oven with the batteries on solar? Anyone know?
MariannRobin is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 05-21-2014, 10:17 AM   #2
Senior Member
al2ride's Avatar
Join Date: Jan 2014
Posts: 1,278
Here is the owner's manual if you don't have it.
Attached Files
File Type: pdf RC7_RC-GS_Owners_Manual(975-0210-01-01_Rev-A).pdf (775.9 KB, 44 views)
USAF Veteran
2014 Forest River Georgetown 351DS
2014 Jeep Wrangler Unlimited Rubicon Toad
al2ride is offline   Reply With Quote
Old 05-24-2014, 01:36 PM   #3
Senior Member
Commercial Member
Join Date: Jul 2010
Posts: 163

How an Inverter/Charger Works. There are two modes of operation associated with all Inverter/ Chargers:

Inverter Mode. When you are not plugged into shorepower and not running your generator, the inverter draws 12 VDC power from the “house” battery bank and does its inversion magic to provide 120 VAC power to the electrical appliances (i.e. AC Loads) connected to the inverter’s output.

Comment: Sorry to say so, but contrary to popular belief, when the inverter is working on battery power, it does not run its “charger” side to recharge the batteries. (A “perpetual” machine it is not!)

Standby / Idle Mode. When you are plugged into shorepower or running your generator, the inverter receives its power from the RV’s power distribution panel (120 VAC) -- usually via its own 30 amp circuit breaker -- and only operates as a charger that converts the 120 VAC to 12 VDC and recharges the batteries.

Here’s what’s happening: When the inverter recognizes it is receiving shorepower or generator power, an internal, automatic transfer relay (switch) closes and the power quickly and efficiently passes through the inverter to the attached appliances. No inverting occurs.

Comment: The input 120 VAC is shared between the Charger and the Loads. That means the charger’s amp draw will be part of the maximum allowed 30 Amp flow and could lead to an unexpectedly popped circuit breaker. Remember to factor this into the total amp draw when turning on appliances powered through the inverter.

Remember: Depending on the availability of 120 VAC power, the internal, Automatic Transfer Relay switches between the Inverter Mode and the Standby / Idle Mode. If 120 VAC is present, the unit will only be a 12 VDC battery charger and the incoming 120 VAC power will pass right through to the attached appliances. If the 120 VAC power goes away, the unit instantly becomes an inverter.

Running the Generator while still attached to shorepower. My recommendation is to always disconnect from shorepower before starting the generator. Yes, the automatic transfer switch is expected to take care of this job automatically. However, over the past ten years, I usually replaced 5 to 8 ATS units during the winter months in Florida. Most common cause for failure was "starting the generator while still connected to shorepower." Hmmm...

Hope this helps.
Dale Lee Sumner
RVIA/RVDA Master Certified RV Service Technician
SUMDALUS is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Xantrex freedom 458 conveter/inverter adonh Class A Motorhome Discussions 13 05-25-2014 07:36 PM
Xantrex Freedom 458 adonh Class A Motorhome Discussions 7 02-01-2014 05:16 PM
Where To Mount Xantrex Remote moisheh Fleetwood Owner's Forum 1 11-27-2013 08:36 PM
Xantrex inverter/charger shows full charge at 12.2V michelb Class A Motorhome Discussions 3 07-16-2013 06:04 PM
Xantrex AGS lights on Remote and Controller deandec Class A Motorhome Discussions 1 06-12-2013 09:40 PM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 03:14 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.