Thread Tools Search this Thread Display Modes
Old 07-19-2015, 12:32 PM   #1
1 Rivet Member
Join Date: Dec 2014
Posts: 12
Unhappy 2 Electrical Conundrums

Puzzle #1. First use of our new Yamaha 2000 Watt generator on our 2013 RBFC AS did not go as planned as we attempted to use it to run run our microwave (Sharp Grill 2 Convection listed as requiring 1450 W/12.5 A) yet each time we'd get an Overload light on the generator and the microwave would cut off. Why doesn't this work?

Puzzle #2. Seemingly unrelated? In Feb we replaced our dead batteries with a pair of Autocraft Starting Marine M24-1, only to soon realize that our converter had a short (perhaps the old batteries were fine) and AS replaced the converter (Parallax 7300, I believe) that seemed to function normally until now. Batteries now appear to charge appropriately either by shore power, long trip or generator, but then completely lose the charge in as little as 12 hours of minimal use. The battery water levels look OK and using a cheap hydrometer (first use of it, was I doing it correctly?) seemed to indicate that all 12 cells were similar and in a satisfactory range. Is there any explanation other than my batteries are caput after just 5 months and was I sold the right kind of battery?

cdfriend is offline   Reply With Quote
Old 07-19-2015, 01:01 PM   #2
Rivet Master
Commercial Member
lewster's Avatar
Currently Looking...
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 6,809
2 Electrical Conundrums

Can't address the genny problem, unless you have another 120VAC load drawing area the same time. 2000 watts should run a 1400 watt microwave.

I have some bad news about your batteries. You bought STARTING batteries where you should have purchased DEEP CYCLE batteries.

Starting batteries are good for one thing......... STARTING ENGINES. They have a different internal structure than deep cycle units and are simply not designed for that use.

If you want more usage from your batteries, get true DEEP CYCLE batteries, not marine deep cycle, marine starting or any other type........just plain old DEEP CYCLE.

I would also junk your present converter for a modern, 'smart' 3-stage converter that will properly charge your batteries. Your existing unit is incapable of proper charging due to it's single voltage constant output.

Lew Farber
RVIA/RVDA Nationally Certified Master Tech
Master Tech Energy Systems, Inc.
AM Solar Certified Installation Center
Lifeline Batteries**Magnum Inverters

Lew Farber...RVIA Certified Master Tech...ABYC Certified Master Marine Electrician
lewster is online now   Reply With Quote
Old 07-19-2015, 01:06 PM   #3
Rivet Master
jdalrymple's Avatar

2009 27' FB Flying Cloud
1991 35' Airstream 350
Siloam Springs , Arkansas
Join Date: Oct 2006
Posts: 1,490
For number 1:

If you are plugging in the shoreline of the trailer, there a certainly more loads than just the 1450 watts required by the microwave: the converter, the refer( if left in the auto mode, it switches to AC when it sees power on the shoreline). These two alone add up to more than is left of the 2000 watts the generator is making when the microwave asks for 1450.

Number Two: One should use deep cycle batteries, not starting batteries. Deep cycle batteries are designed to provide power over a longer period time. Starting batteries supply a large amount of power for a short time.

You don't mention what appliances you are running during a 12 hour period. The are just batteries and have a limited supply of power. Leaving lights on or using an AC inverter are high current draw activities, and will use up a pair of batteries in short order.

Good Luck,

Jeff & Cindy
Hunter RIP

'09 27FB Flying Cloud
'91 350 LE MH
jdalrymple is offline   Reply With Quote
Old 07-19-2015, 01:40 PM   #4
Rivet Master
HowieE's Avatar

1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,316
Images: 12
A 2000 watt generator will not power the background things in your trailer and the microwave. Turn the frig to gas, the convertor off, and any other 120 volt items that you have like the TV which is always powered on.

That generator will show an over load at about 1700 watts.
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 07-19-2015, 08:25 PM   #5
Rivet Master
richinny's Avatar
2011 34' Classic
Westchester Cty.NY , / Miami FL
Join Date: Jul 2007
Posts: 3,122
switch the water heater to gas too.
2012 F150 Super Crew 5-1/2' bed Ecoboost 4x4 3.73 elec. lock diff. Propride hitch
give life. kidney & pancreas transplant 9/9/06
Ingrid-my unofficial '"World's Oldest Streamer" 1909-2008 R.I.P.
richinny 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
Electrical probs w electrical to new fridge cooling unit. Surfairstrea Batteries, Univolts, Converters & Inverters 2 05-23-2012 07:24 PM
I have made many electrical changes FrankR Electrical - Systems, Generators, Batteries & Solar 4 10-03-2008 08:53 AM
Electrical changes 120 volt ac FrankR Electrical - Systems, Generators, Batteries & Solar 5 03-13-2005 06:20 PM
New electrical in position FrankR Electrical - Systems, Generators, Batteries & Solar 5 05-18-2002 11:47 PM
Electrical System Question ViewRVs Mechanics Corner - Engines, Transmission & More... 2 03-16-2002 07:39 PM

Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:53 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.