Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 05-31-2009, 07:21 PM   #1
Senior Member
 
Join Date: Jan 2003
Location: Evansville, IN
Posts: 629
Inverter pegging the voltage meter at 130 volts?

Good evening,
Recently took a long cross country trip in the motorhome and one day while using the invertor only to power the laptop my wife said she smelled something hot. She noticed that the voltage meter I keep plugged into an outlet was pegged all the way over to 130 volts.
First of all I can't really say for sure that it normally is at a lower voltage output, say 120 volts but it seems strange that it would be at 130 volts. When I'm hooked to shore power or when I used the generator it would be in the 120 volt range.
Does anyone know what problem if any this could be indicating? I felt the outlet to see if possibly it was getting warm (the hot smell) and it wasn't and otherwise I couldn't tell any problems. Didn't use the inverter for a few hours and then used it again the next day with no problems although the meter was maxed out again.
Appreciate any thoughts or idea's about this.
Letsgoagain
__________________

__________________
04 HR Ambassador 38 PDQ ISC 330 Cummins,
2016 Chevy Colorado crew cab Z71
Letsgoagain 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 05-31-2009, 07:38 PM   #2
Senior Member
 
Join Date: Jan 2003
Location: Evansville, IN
Posts: 629
Okay, after reading some of the similar threads that pertain to this issue I think that maybe its just the volt meter not reading the modified sine wave correctly.
Seems this problem has occurred for other folks also. Think I'll do a search before posting a new thread from now on.
Letsgoagain
__________________

__________________
04 HR Ambassador 38 PDQ ISC 330 Cummins,
2016 Chevy Colorado crew cab Z71
Letsgoagain is offline   Reply With Quote
Old 06-01-2009, 03:09 PM   #3
Moderator Emeritus
 
Cruzer's Avatar


 
Join Date: Oct 2002
Location: Sheboygan, WI
Posts: 4,901
I believe you are correct. Modified sine waves don't operate regular voltmeters accurately. The 130 volt reading is about right for that scenario. For deatils on Modified Sine Waves check out http://www.rvtechlibrary.com/electrical/sinewave.htm
__________________
Mark & Leann Quasius
2016 Cornerstone 45A
2007 Allegro Bus 42QRP (Sold)
2012 Jeep Wrangler Unlimited - Rubicon
Cruzer is offline   Reply With Quote
Old 06-01-2009, 05:48 PM   #4
Community Administrator
 
Route 66's Avatar


 
Newmar Owners Club
Retired Fire Service RVer's
Spartan Chassis
Join Date: May 2000
Location: Newark, DE
Posts: 25,611
I believe reading a modified sine wave with a voltmeter that is not True-RMS capable will result in a lower voltage reading.

Usually around 104 volts or lower, whereas a True-RMS voltmeter will read correctly.

130 volts is within the 10% tolerance of the standard 120 volts, and should not normally cause a problem, although we rarely see 130 volts. Low voltage is the common problem.
__________________
Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, previously 4 years as a fulltimer in a '07 DSDP

Route 66 is online now   Reply With Quote
Old 06-02-2009, 01:20 PM   #5
Senior Member
 
Eddie Foy's Avatar
 
Join Date: Jun 2008
Posts: 279
If the meter is PEGGED at 130, you have no idea what the real reading is. Something above 130.

Quote:
Originally Posted by Route 66 View Post
I believe reading a modified sine wave with a voltmeter that is not True-RMS capable will result in a lower voltage reading.

Usually around 104 volts or lower, whereas a True-RMS voltmeter will read correctly.

130 volts is within the 10% tolerance of the standard 120 volts, and should not normally cause a problem, although we rarely see 130 volts. Low voltage is the common problem.
__________________
2007 Presidio 39D

Mercedes MBE 926
Eddie Foy is offline   Reply With Quote
Old 06-03-2009, 12:19 PM   #6
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 22,799
I responded to this in another forum I suspect.. ROUTE 66 has it right, Usually a Peak Reading volt meter (most inexpensive meters are peak reading) will read LOW on a MSW inverter, properly on a TSW,

If you wish a short course in electricity I can explain why, but alas, Don't wish to type that much today. (Just ask)

The 130 reading (in the other forum I simply said "Don't risk it") is high.

And if you have an analog meter.. It may be reading RMS, not peak

I'd go with a True Sine replacment inverter if you can afford it.. ELse, a replacement.. If you are parked near me I might have one (But I think they are elsewhere)
__________________

__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Reply



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
inverter suggestions? JRock1014 Damon 4 03-10-2009 12:51 PM
High A/C voltage -- inverter RRT2 Winnebago Industries Owner's Forum 6 11-21-2008 02:04 PM
inverter voltage drops when workhorse starts rick_od Workhorse and Chevrolet Chassis Motorhome Forum 19 12-14-2007 04:29 PM
Inverter Voltage?? max49 Class A Motorhome Discussions 8 01-03-2007 03:08 AM
Genset putting out over 130 volts.. Houndog RV Systems & Appliances 5 10-29-2005 02:19 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:23 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.