RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 07-30-2019, 01:32 AM   #1
Junior Member
 
ephratah's Avatar
 
Join Date: Jul 2019
Location: Ephratah NY
Posts: 18
New to Class A Generator question

Have a onan 5500 watt generator and have been thinking about a few things if you are plugged into shore power and the generator gets started is there automatic switch gear that protects the coach from a power surge?
Being new to Class A we are going to have a lot of questions and these forums are a great place to get info from thanks to every one involved in the forums and making this possible
__________________

__________________
2000 Fleet Wood Flair 32V Ford F53 Triton V10
This is our 1st motor home
ephratah is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com 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 07-30-2019, 04:14 AM   #2
Senior Member
 
Join Date: Aug 2016
Posts: 480
In my coach when the generator is running, it trumps shore power. The switch from shore power to gen power is controlled by the transfer box.
__________________

__________________
Pete , Stroudsburg , PA. 2017 Tiffin 32 SA 24K Chassis
Sumo Springs, Safe T Plus, F&R RM SB, CHF,R-TB,Front Koni FSD Quad Shocks,Rear Koni FSD Quad Shocks,2019 Jeep Cherokee Trailhawk Elite
Peter M is offline   Reply With Quote
Old 07-30-2019, 04:37 AM   #3
Senior Member
 
Join Date: Jul 2014
Posts: 18,516
Yes, if equipped, your MH will have a automatic transfer switch.

When on shore power all of your electric needs come thu the shore power cord to the main breaker panel.

If you start the generator, the automatic transfer switch is designed to disconnect the shore power, whether its plugged in or not, and connect the generator power. There is a 30 second delay to let the generator stabilize and run smooth before it connects.

If you shut down the generator the auto switch will revert back to the shore power cord.

There is no chance of both combining and causing damage.

Basicly, shore power is the default ( resting ) position and generator is the priority ( power sensing ) position.

If you have a outlet that the shore power cord plugs into, to access its power, in the shore power compartment, you don't have a auto switch.
twinboat is online now   Reply With Quote
Old 07-30-2019, 07:08 AM   #4
Senior Member
 
Join Date: Jul 2012
Location: Southern New Jersey
Posts: 225
My FW Storm connects to the generator by plugging the shore cord into an outlet in the Plumb. bay so you can't be connected to generator and shore power at the same time. Sometimes in the lower end models fw didn't have a transfer switch to change from one to the other. The good part is it is simple stupid and no switch to go bad. You are either plugged into the generator, which is what we do when traveling in case we want the generator for microwave, a/c or regular elec for something else or the cord is plugged into shore power post when in a campground. This finding out stuff is the fun part of owning one of these things. Safe travels.
__________________
Dennis & Mary Ann(Directress of Navigation & Planning), 2013 Storm 32BH
denverh is offline   Reply With Quote
Old 07-30-2019, 08:38 AM   #5
Senior Member
 
FatChance's Avatar
 
Join Date: Mar 2015
Posts: 2,526
I try to be gentle with our transfer switch's contact points and avoid hot switches. When I connect to shore power, I turn off the generator first if it is running. And if I want to turn on the generator, I disconnect shore power first.
__________________
'04 Newmar Mountain Aire 4016
400ISL/Freightliner
FatChance is online now   Reply With Quote
Old 07-30-2019, 08:11 PM   #6
NXR
Senior Member
 
Join Date: Mar 2019
Posts: 422
Quote:
Originally Posted by FatChance View Post
I try to be gentle with our transfer switch's contact points and avoid hot switches. When I connect to shore power, I turn off the generator first if it is running. And if I want to turn on the generator, I disconnect shore power first.
Good advice. At a minimum turn off the air conditioners.

Ray
__________________
2020 Forest River Georgetown GT5 34H5
NXR is offline   Reply With Quote
Old 07-30-2019, 09:10 PM   #7
Member
 
Steve43's Avatar
 
Workhorse Chassis Owner
Holiday Rambler Owners Club
Join Date: Aug 2018
Location: NPR, FL
Posts: 32
Concur with all the above. Less electrical load, less arching of transfer switch contacts. Just like plugging a lamp into an outlet while on, you get arching at the plug. I try to get below 4 amps before turning off and switching. No heavy loads will reduce wear on transfer switch. If it goes bad, it is usually the contacts that are burnt.

Also, it is recommended to make sure, if you start the generator - then run it under a load (one or two a/c's) at least for a half hour to warm up armature and engine. It usually takes 30 secs for the transfer switch to allow power to the coach (enough time for generator to stabilize) and after that, you can start turning on a load. Just make sure to remove the load from the generator and wait a minute or two before shutting down (a 'cool' cycle).

As suggested, make sure power is off (disconnected) on shore before starting generator and vice versa. Just saving the transfer switch from a lot of arching.

Good luck!
__________________
2004 Holiday Rambler Vacationer WDD
2004 Honda Goldwing w/trike kit
US Navy - PCF 102 (SwiftBoat)
Steve43 is offline   Reply With Quote
Old 07-30-2019, 11:25 PM   #8
Senior Member
 
Join Date: Jul 2014
Posts: 18,516
Reading posts on this site for 5 years, it strongly suggests that most auto transfer switch failures are due to burnt wire connections due to poor installation or connections loosening over time.

The arching contact damage is a internet driven myth. The contacts in the auto transfer switch are huge in comparison to the contacts in the air conditioner start relay and that switchs the compressor on and off multiple times a day for years and years.

RVs with auto generator start systems " hot switch " the auto transfer switch by design.
twinboat is online now   Reply With Quote
Old 07-31-2019, 04:47 AM   #9
Senior Member
 
Join Date: Oct 2016
Posts: 1,429
The burnt wire, loose connection situation started way back and it is something everyone should check

Power off good quality screw driver and check all the terminals tension/torque at the transfer switch and mains at the load center
__________________
2016 Tuscany 42GX
F150 KR or Escape Toad
lwmcguire is online now   Reply With Quote
Old 07-31-2019, 05:23 AM   #10
Senior Member
 
vettenuts's Avatar
 
Join Date: Nov 2013
Posts: 4,248
New to Class A Generator question

As a precaution, I shut off all my electrical loads prior to starting or shutting down the generator.
__________________
2005 Newmar Kountry Star 3742 - Gas
2018 Chevrolet Colorado Toad
Roadmaster Tow Setup
vettenuts is offline   Reply With Quote
Old 07-31-2019, 06:58 AM   #11
Senior Member - DIYer
 
Waiter21's Avatar


 
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 6,167
Quote:
Have a onan 5500 watt generator and have been thinking about a few things if you are plugged into shore power and the generator gets started is there automatic switch gear that protects the coach from a power surge?
No. The switchgear will automatically change over from shore to genny, but there is nothing to protect against the surge.

Before plugging into shore power, or starting the generator, turn off electrical loads
__________________
1999 Fleetwood Southwind 35S (Ford F53 6.8L V10 275hp 4R100 4 spd trans) - Toad 2003 Saturn Vue.
(www.1999Southwind.com)

It won't do MACH 2, but I can get a sandwich and take a pee.
Waiter21 is online now   Reply With Quote
Old 07-31-2019, 07:04 AM   #12
Senior Member
 
Join Date: Nov 2015
Posts: 724
Quote:
Originally Posted by ephratah View Post
Have a onan 5500 watt generator and have been thinking about a few things if you are plugged into shore power and the generator gets started is there automatic switch gear that protects the coach from a power surge?
Being new to Class A we are going to have a lot of questions and these forums are a great place to get info from thanks to every one involved in the forums and making this possible
if you are plugged into shore power why would you start generator?
Mojim is offline   Reply With Quote
Old 07-31-2019, 07:28 AM   #13
Senior Member
 
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 2,579
Quote:
Originally Posted by Waiter21 View Post
No. The switchgear will automatically change over from shore to genny, but there is nothing to protect against the surge.
If he has an automatic transfer switch .
The best way for the OP to confirm what system he has is to follow the electrical cable back to the MH and see if it leads to a transfer switch or goes directly into the MH's electrical panel. If the cable goes directly to the electrical panel he does not have a transfer switch.
My '02 Fleetwood does not have a transfer switch. I have to plug the shore cable into a plug in the wet bay to get power from the generator.
Lynn
__________________
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
LETMGROW is offline   Reply With Quote
Old 07-31-2019, 07:39 AM   #14
Senior Member
 
Join Date: Jul 2014
Posts: 18,516
I do to exercise it. Run ot a 1/2 hour and shut it down.
Quote:
Originally Posted by Mojim View Post
if you are plugged into shore power why would you start generator?
__________________

twinboat is online now   Reply With Quote
Reply

Tags
class a, generator



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
Video: Overview Class A vs Class B vs Class C pros and cons for new RVers themoreweexplore New Member Check-In 8 08-03-2015 04:14 PM
Class A, class B, class C?? dottedlines MH-General Discussions & Problems 22 03-24-2015 09:55 AM
Downsize from Class A to Class C Question Traxless Class C Motorhome Discussions 17 10-16-2013 04:15 PM
New to MH Buying - Class A versus Class C clinic711 MH-General Discussions & Problems 12 07-31-2013 11:39 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:44 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.