Reply
 
Thread Tools Display Modes
Old 09-29-2014, 12:13 AM   #1
Member
 
Join Date: Apr 2014
Posts: 89
Electrical issue on shore power but works fine on generator

We're camping in New Mexico, and I have the following problem:

On generator: all circuits and appliances work, the house battery charges up, inverter panel shows AC in, inverted circuits work

On shore power: GFCI circuits in bath, kitchen, and basement do not work, front air conditioner does not work, batteries do not charge, inverter panel mid-coach does not show AC in, inverted circuits work.

Any ideas? Transfer switch?

2009 FR Berk 390BH

Thanks
__________________

__________________
Moose
2009 FR Berkshire 390BH
jbramhall is offline   Reply With Quote
Old 09-29-2014, 11:46 AM   #2
Senior Member
 
jk510's Avatar
 
Join Date: Dec 2009
Posts: 206
Maybe a silly question but, have you checked the power at the pole? They are not always the most well cared for item in the park. You need a volt meter (DMM) and check both L1 and L2. If your rear AC is working it sounds like one of the Ls is dead.
__________________

__________________
Joel K
Southeast AZ
2013 Coachman Mirada 29DSSE
jk510 is offline   Reply With Quote
Old 09-29-2014, 11:50 AM   #3
Site Team
 
wmtire's Avatar
 
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 15,048
Quote:
Originally Posted by jk510 View Post
Maybe a silly question but, have you checked the power at the pole? They are not always the most well cared for item in the park. You need a volt meter (DMM) and check both L1 and L2. If your rear AC is working it sounds like one of the Ls is dead.
X2. On a 50 amp RV, in simple terms you have TWO 50 amp 120 volt lines feeding the RV. It does sound like one of the lines is not working correct...thus only some of your stuff working, that may all be on the non functioning incoming line.

As jk510 stated above, the first place to check is the pedestal at the park.

This link will help, and click the outlet testing tab on the left:

http://www.myrv.us/electric/



The voltage between Y and X should be 240-Volt, X and W 120-Volt, Y and W 120-Volt, X and G 120-volt, Y and G 120-volt, W and G 0-Volt

You may find either the Y(L1) or X(L2) is not giving you 120 volts.

You can also have the same thing happening in your power cord, and only one leg is coming all the way in to the RV. We see bad/burnt power cords pretty frequently here in the forums....especially when owners don't twist them good for the final lock, or connect/disconnect the cords without killing power at the pedestal first. Over time, the electrical arcing that occurs will make either the cord, or the attaching point to the RV unworkable.

I would check the campground outlet first. If that checks out, then plug your detachable RV cord into the outlet, but not to the RV. Check the cord now. This way you can eliminate each link in the power chain, as to where the problem lies.

If the cord checks out, then you know the problem lies from where the cord attaches to the RV and in from there.
__________________
2011 Flagstaff 831 RLBSS

Ducks are just all-terrain chickens
wmtire is offline   Reply With Quote
Old 09-29-2014, 11:52 AM   #4
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Bad transfer switch?
Only one side engaging on shore power?
Only one leg hot on pole?

Turbs
__________________
TURBS is offline   Reply With Quote
Old 09-30-2014, 03:39 PM   #5
Member
 
Join Date: Apr 2014
Posts: 89
Sorry, bad internet connectivity last couple days.

An update, I opened up the transfer switch and found melted contacts! Lucky we had no fire. I found a replacement part in Flagstaff and we'll drop the coach for a day while we sightsee there. Here's some pictures...Click image for larger version

Name:	ImageUploadedByForest River Forums1412105949.684416.jpg
Views:	139
Size:	752.7 KB
ID:	63856Click image for larger version

Name:	ImageUploadedByForest River Forums1412105965.806106.jpg
Views:	123
Size:	820.5 KB
ID:	63857Click image for larger version

Name:	ImageUploadedByForest River Forums1412105977.322476.jpg
Views:	131
Size:	617.7 KB
ID:	63858
__________________
Moose
2009 FR Berkshire 390BH
jbramhall is offline   Reply With Quote
Old 09-30-2014, 03:45 PM   #6
Site Team
 
Kaadk's Avatar
 
Join Date: Apr 2013
Posts: 3,469
You got lucky. That looks like it could have gotten real ugly, real fast.

I've never taken a look inside a transfer switch. I would have assumed to find relays that handle the switching. Instead, this looks like it's just bridging the two connections into one output. In that case I'd be worried about plugging into shore power with a generator running.
__________________
There's no use crying over spilt milk, unless it's on your keyboard.
Kaadk is online now   Reply With Quote
Old 09-30-2014, 04:27 PM   #7
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Hey I got one right!
Do I win a prize?
Or does this just make my wrong from another thread just equal out?

Turbs
__________________
TURBS is offline   Reply With Quote
Old 09-30-2014, 04:36 PM   #8
Member
 
Join Date: Apr 2014
Posts: 89
You got it!

I put a cheap smoke detector in the bay with the transfer switch, and I have not plugged in to shore power for 2 days. I run the generator at the end of the day only to bring the batteries up for over night for lights when we're in the coach. I think the risk of fire is highest on shore power, lowest on battery, and middle risk on generator. I only run the generator when we're awake and near the coach. I have the fridge and hot water running on gas. The real pisser is that the coffee machine requires good power!
__________________
Moose
2009 FR Berkshire 390BH
jbramhall is offline   Reply With Quote
Old 09-30-2014, 09:49 PM   #9
Senior Member
 
Join Date: Apr 2012
Location: South Carolina
Posts: 1,254
The photos show why OSHA requires arc flash protection when opening electrical panels that are energized. This is one government rule that makes sense. Suppose you had the panel cover off and were troubleshooting it when the arc happened? I've seen videos of arc flashes using dummies in front of an open panel. The arc spews out molten metal and it gets ugly really fast.

The smoke detector in the electrical bay is a good idea. On our Sunseeker, it's directly underneath the bed. That's not a comforting thought. I just hope the metal box contains the arc if it happens!
__________________
RamblerGuy is offline   Reply With Quote
Old 10-01-2014, 12:03 PM   #10
Senior Member
 
jk510's Avatar
 
Join Date: Dec 2009
Posts: 206
HOLY CRAP!! That's Ugly!!
I have to wonder what caused it. That shouldn't happen in normal operation. Did you take any powerline hits? Wow.
__________________

__________________
Joel K
Southeast AZ
2013 Coachman Mirada 29DSSE
jk510 is offline   Reply With Quote
Reply

Tags
electric, electrical, generator, power

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



» Virginia Campgrounds

Reviews provided by




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


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:05 PM.