Jayco RV Owners Forum
 


Closed Thread
 
Thread Tools Display Modes
 
Old 09-16-2014, 02:18 PM   #51
Senior Member
 
Join Date: May 2014
Location: VA
Posts: 394
Quote:
Originally Posted by Raugustin View Post
I have to agree, the only way a 120V 30A supply to an RV could receive 220V is if the neutral was to short against the other live phase of a 220v supply. This would be almost impossible, an open neutral would cause an outage not an overvoltage.
While the circuit you're plugged in to is 120 volt, the campground most likely has a 240 volt feed just like your house. When you lose the neutral the load becaomes unbalanced. One of the 120 volt legs may have low voltage, while the other leg can have over voltage.
__________________

__________________
2005 Dodge Ram 1500 Quad Cab 5.7 HEMI
2̶0̶1̶4̶ ̶J̶a̶y̶ ̶F̶e̶a̶t̶h̶e̶r̶ ̶X̶1̶9̶H̶
howie is offline  
Old 09-16-2014, 02:26 PM   #52
Senior Member
 
tnchuck100's Avatar
 
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
Quote:
Originally Posted by Raugustin View Post
I have to agree, the only way a 120V 30A supply to an RV could receive 220V is if the neutral was to short against the other live phase of a 220v supply. This would be almost impossible, an open neutral would cause an outage not an overvoltage.
This may be a little difficult to understand unless you are a qualified electrician.

Consider you have 220 V distribution throughout the park. Half of the 30 amp recepticals are one leg of the neutral/hot and the other half will be on the other leg. If you have a poor neutral connection at the transformer one leg will get an increase in voltage. The other leg will have a decrease in voltage by the same amount. The amount of change is dependent on the load presented on each leg.
__________________

__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD

EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
tnchuck100 is offline  
Old 09-16-2014, 02:29 PM   #53
Senior Member
 
tnchuck100's Avatar
 
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
Quote:
Originally Posted by nbhybrid View Post
your opinion

http://www.damouth.org/RVStuff/Autoform.shtml

You will draw more amps as the autoformer ramps up the voltage therefor lowering the voltage to the people around you
If you split hairs,yes. Theoretically yes. In the real world the effect is negligible. For all intents and purposes insignificant.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD

EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
tnchuck100 is offline  
Old 09-16-2014, 02:34 PM   #54
Lost in the Woods
 
Join Date: Jun 2014
Location: Woodstock
Posts: 1,128
Quote:
Originally Posted by tnchuck100 View Post
If you split hairs,yes. Theoretically yes. In the real world the effect is negligible. For all intents and purposes insignificant.

perhaps, but you don't know how insignificant it would be. In a low voltage situation where ems systems are shutting down any extra draw on the system by an autoformer is significant.
nbhybrid is offline  
Old 09-16-2014, 02:41 PM   #55
Senior Member
 
tnchuck100's Avatar
 
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
nbhybrid, you have been posting information without a sufficient understanding of real world electrical characteristics. I am speaking of real world application. Not mathematical theory.

It WILL NOT take a measurable amount of power from others. Fractions of a volt.....MAYBE.
__________________
Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD

EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
tnchuck100 is offline  
Old 09-16-2014, 03:27 PM   #56
Lost in the Woods
 
Join Date: Jun 2014
Location: Woodstock
Posts: 1,128
I apologize to the group. I was unaware I was arguing
nbhybrid is offline  
Old 09-16-2014, 04:55 PM   #57
Senior Member
 
Raugustin's Avatar
 
Join Date: Oct 2012
Location: Camlachie
Posts: 143
Quote:
Originally Posted by tnchuck100 View Post
If you split hairs,yes. Theoretically yes. In the real world the effect is negligible. For all intents and purposes insignificant.
thanks tnchuck and Howie,

yes you are both correct....an open neutral will result in a series circuit with the resulting voltage drops being based on the connected loads from the open neutral to each the line. This being said, the only way you can deliver 240V to either side is by shorting the ungrounded side of the open neutral to the other 120v line. An open neutral will damage equipment and is the number one cause of electrocutions.

Regards,

Ron
__________________

Ron (Augie)
2015 Pinnacle 38FLSA
2013 Ram Laramie 3500 (Dually)
Curt Q20 hitch
Raugustin is offline  
Old 09-16-2014, 05:48 PM   #58
Senior Member
 
Larry G.'s Avatar
 
Join Date: Dec 2011
Location: Reno (home base) Winter Eloy, AZ
Posts: 951
Our EMS PI 50amp portable has protected us well over the years.
__________________

2012 Pinnacle 36KPTS - Kitchen Pantry Triple Slide
Mor/Ryde suspension and pin box, Dual pane windows, Auto Leveling System, 2 A/C's, Sailun G's and more...
View photos

Our Trip Journal
Larry G. is offline  
Old 09-16-2014, 07:05 PM   #59
Senior Member
 
Join Date: Aug 2014
Location: NY Southern Tier
Posts: 105
Quote:
Originally Posted by Hitch Pin View Post
Yes to all of the above. When I talked to the people at Hughes they said that it does all of that, this unit has a surge and spike Protector built in, if there is a open ground or other faults the amber light will not come on and will not allow any out put to your rv.

Watch the video https://hughesautoformers.com/
This was in response to my question if the autoformer does everything an EMS does. I just downloaded the autoformer user guide and it appears that the autoformer does not. The manual says that if the voltage drops below 90v the autoformer goes into bypass mode. It does not shut down. Even though it does have some surge protection, it will not shut down at high voltage. An EMS will shut down above 132v and has a higher level of surge protection. Perhaps Hughes has added these featurers, but I haven't seen it. I guess that's why some people use an EMS after the autoformer.
__________________
2015 Chevy Silverado 2500HD LT 6.0L 4.10
2015 Jayco White Hawk 24RKS
RVer-Bill is offline  
Old 09-16-2014, 10:01 PM   #60
Senior Member
 
Hitch Pin's Avatar
 
Join Date: Sep 2011
Location: Southern Ohio
Posts: 464
Quote:
Originally Posted by nbhybrid View Post
your opinion

http://www.damouth.org/RVStuff/Autoform.shtml

You will draw more amps as the autoformer ramps up the voltage therefor lowering the voltage to the people around you
I checked out the site above, I must say that I don't agree with all that it says.

An Autoformer running at full output (50amps) will use 1 amp, but will cause appliances to cycle more often and run cooler. This will use less total power from the park.

So if you have a 30 amp Autoformer running at full output it would be less than a 1 amp draw on the parks power.
__________________

__________________
2015 Jay Flight 23 RB
2014 Silverado LT 1500 with a 5.3 V8 Ecotec3
Hitch Pin is offline  
Closed Thread

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 State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 04:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.