Reply
 
Thread Tools Display Modes
 
Old 08-23-2011, 04:59 PM   #1
Skoolie
 
MikeyBskunk's Avatar
 
Join Date: Sep 2010
Location: Wood Dale
Posts: 189
Year: 1991
Coachwork: Ford
Chassis: Carpenter
Engine: 7.8 New Holland
Rated Cap: 72
AC power converter

do i need a new alternater to run an AC power converter??
MikeyBskunk is offline   Reply With Quote
Old 08-24-2011, 10:42 AM   #2
Bus Crazy
 
roach711's Avatar
 
Join Date: May 2010
Location: Farmington Hills, Mi (Detroit area)
Posts: 1,572
Year: 2000
Coachwork: Eldorado Aerotech 24'
Chassis: Ford E-450 Cutaway Bus
Engine: 7.3L Powerstroke
Rated Cap: 19
Re: AC power converter

Do you want to CONvert AC to DC or INvert DC to AC?

If you are charging batteries you'll need an alternator or shore power (plug into an AC outlet). The alternator will charge the batteries directly but if you're hooked up to shore power you'll need an AC to DC converter with a battery charger.

Your existing alternator will power a DC to AC inverter - whether you need to upgrade depends on how much juice you need.

Give us a better idea of your present electrical setup and what you want to power and we can be more specific.
__________________
The Roach Motel
roach711 is offline   Reply With Quote
Old 08-24-2011, 04:53 PM   #3
Skoolie
 
MikeyBskunk's Avatar
 
Join Date: Sep 2010
Location: Wood Dale
Posts: 189
Year: 1991
Coachwork: Ford
Chassis: Carpenter
Engine: 7.8 New Holland
Rated Cap: 72
Re: AC power converter

i want to run the converter to charge my "house" battries wile im driving then use the "house" battries when camping
if that helps any?? i know that the jesperson bus file explanes it better
MikeyBskunk is offline   Reply With Quote
Old 08-24-2011, 05:33 PM   #4
Bus Crazy
 
gbstewart's Avatar
 
Join Date: Apr 2010
Posts: 1,171
Year: 1999
Coachwork: Bluebird
Chassis: 3800 International
Engine: T444E
Rated Cap: 72
Re: AC power converter

you need a battery isolater, or a solinod. this allowes the house battery to charge when driving, and when that engine is off , it prevents your start battery to discharge.

gbstewart
__________________
my bus build viewtopic.php?f=9&t=5931
gbstewart is offline   Reply With Quote
Old 08-25-2011, 01:08 PM   #5
Bus Crazy
 
roach711's Avatar
 
Join Date: May 2010
Location: Farmington Hills, Mi (Detroit area)
Posts: 1,572
Year: 2000
Coachwork: Eldorado Aerotech 24'
Chassis: Ford E-450 Cutaway Bus
Engine: 7.3L Powerstroke
Rated Cap: 19
Re: AC power converter

If all you want to do is charge the house batteries while driving, you don't need a converter at all. The converter converts 120v AC from shore power to 12v DC that you can use to power 12 volt devices or charge the house batteries.

The simplest way to charge your house batteries while driving is to connect them directly to the alternator. The problem with this setup is that when you're camping your starting battery will run down along with the house batteries. To avoid discharging the starting battery you can use a manual disconnect switch (which relies on you remembering to disconnect the house and starting batteries) or as GB said, install a solid state battery isolater or an ignition switch activated solenoid. Both will automatically break the connection between the house and starting batteries while the engine is off and also allow the alternator to charge both while driving.

RV electricity has a pretty steep learning curve.
__________________
The Roach Motel
roach711 is offline   Reply With Quote
Old 08-28-2011, 02:38 PM   #6
Bus Geek
 
lapeer20m's Avatar
 
Join Date: Nov 2003
Location: near flint michigan
Posts: 2,653
Re: AC power converter

Depending on how often you use your bus, you may want to consider adding a second engine driven alternator just to run the "house" system and charge the house batteries.

I have had bad luck with connecting battery banks of Different states of charge together. In the past ten years, I have replaced no less than 8 bus alternators due to failure.

In my case, it has proven to be less expensive and less hassle to simply add an alternator and have two separate 12v systems than to wait for my single alternator to fail while on a road trip.

alternators needed in an emergency from a truck stop can be double or even triple the price of the same alternator from eBay.
__________________
Quis custodiet ipsos custodes (who will watch the watchmen?)
lapeer20m is offline   Reply With Quote
Old 08-28-2011, 02:47 PM   #7
Bus Geek
 
lapeer20m's Avatar
 
Join Date: Nov 2003
Location: near flint michigan
Posts: 2,653
Re: AC power converter

Also wanted to add that two separate systems provide some great redundancy. If one system fails, they can be temporarily be tied together until it is convenient to fix.

Most bus engines have spare pulleys available on the crankshaft, or other location that make it simple to install a second alternator.

Here is a kink to a video of an alternator I added to a dd rear engine bus.
__________________
Quis custodiet ipsos custodes (who will watch the watchmen?)
lapeer20m is offline   Reply With Quote
Old 08-29-2011, 09:37 AM   #8
Bus Crazy
 
roach711's Avatar
 
Join Date: May 2010
Location: Farmington Hills, Mi (Detroit area)
Posts: 1,572
Year: 2000
Coachwork: Eldorado Aerotech 24'
Chassis: Ford E-450 Cutaway Bus
Engine: 7.3L Powerstroke
Rated Cap: 19
Re: AC power converter

Very good point there Lapeer.
__________________
The Roach Motel
roach711 is offline   Reply With Quote
Old 08-29-2011, 12:57 PM   #9
Bus Crazy
 
Stuff's Avatar
 
Join Date: Apr 2010
Location: Estevan, Saskatchewan, Canada
Posts: 1,485
Year: 1990
Coachwork: Goshen
Chassis: Ford
Engine: 7.3
Rated Cap: 25
Send a message via AIM to Stuff Send a message via MSN to Stuff
Re: AC power converter

Quote:
Originally Posted by lapeer20m
Also wanted to add that two separate systems provide some great redundancy. If one system fails, they can be temporarily be tied together until it is convenient to fix.

Most bus engines have spare pulleys available on the crankshaft, or other location that make it simple to install a second alternator.

Here is a kink to a video of an alternator I added to a dd rear engine bus.

video has been took down
__________________
1990 E-350 Goshen Coach - 7.3L Diesel ---> http://www.skoolie.net/forum/viewtopic.php?f=36&t=5756

My Youtube channel - https://www.youtube.com/user/thestuffz
Stuff is offline   Reply With Quote
Old 08-29-2011, 04:33 PM   #10
Skoolie
 
MikeyBskunk's Avatar
 
Join Date: Sep 2010
Location: Wood Dale
Posts: 189
Year: 1991
Coachwork: Ford
Chassis: Carpenter
Engine: 7.8 New Holland
Rated Cap: 72
Re: AC power converter

Huh like said that is alot of thinking and learning but thanks for the tips and keep postion i now will start my serching for supplies
MikeyBskunk is offline   Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Power converter roach711 Conversion General Discussions 1 05-21-2013 10:41 PM
how do you add a converter? turf Electrical, Charging and Solar 4 05-05-2013 10:56 PM
12V converter... jkindt Electrical, Charging and Solar 1 04-27-2010 09:58 AM
converter shaggy Conversion General Discussions 1 07-04-2006 08:22 PM
ATX PC Power Supply to a 12 Volt Power Source vonslatt Everything Else | General Skoolie Discussions 3 02-15-2006 07:57 PM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 05:49 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.