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 04-15-2008, 05:42 PM   #15
Senior Member
 
Join Date: Dec 2007
Location: Blairsville,GA
Posts: 257
I thought 6/0 was kinda strange, because in the electrical business, wire size only goes up to 4/0, then it starts with 250 kcmil and goes up from there.
__________________

__________________
Hillbilly2 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 04-15-2008, 06:48 PM   #16
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,105
It may be the motor/compressor in the little fridge doesn't like modified sine wave power.
__________________

__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 04-16-2008, 04:06 PM   #17
Senior Member
 
Max Hubrich's Avatar


 
Workhorse Chassis Owner
Join Date: Mar 2007
Location: Pikeville, NC
Posts: 1,724
Update,

The box the inverter came in shows a color picture of a freezer similiar to mine that can be used with this piece of equipment. The freezer is not working properly now.

I'm goin to plan "B". Two new units are in the UPS system to me now.

I'll post updates---
__________________
Max H,
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.
Max Hubrich is offline   Reply With Quote
Old 04-16-2008, 05:10 PM   #18
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,105
Remember, the picture on the box was put there by Marketing rather than Engineering!
__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 04-16-2008, 07:38 PM   #19
Member
 
sparetire's Avatar
 
Join Date: Feb 2007
Posts: 53
"Remember, the picture on the box was put there by Marketing rather than Engineering!"

I got a chuckle out of that, but ain't it the truth!! Sometimes a picture isn't worth popcorn gas!

Take care,
Sparetire
__________________
sparetire is offline   Reply With Quote
Old 04-17-2008, 05:26 AM   #20
Senior Member
 
Max Hubrich's Avatar


 
Workhorse Chassis Owner
Join Date: Mar 2007
Location: Pikeville, NC
Posts: 1,724
While I'm waiting for new units, I did a little research-- still don't know much and can't figure out the copper diameter of 1/0 and 3/0 cable. I can use a micrometer if I can figure this mess out in thousands--


By definition, No. 36 AWG is 0.005 inches diameter, and No. 0000 is 0.46 inches diameter. The ratio of these sizes is 92, and between them are 38 sizes, with equal ratios between each adjacent pair of sizes. (The 40 different sizes result in 39 size changes.) (Sizes with multiple zeros are successively larger than No. 0 and can be denoted using "number of zeros/0", for example 4/0 for 0000.) Therefore, the diameter of a No. n AWG wire is


and its cross-section area is

.
For an m/0 AWG wire, use n = −(m−1) in the above formulas. For instance, for No. 0000 or 4/0, use n = −3.

The ratio between successive sizes is the 39th root of 92, or approximately 1.1229322.[2]

The sixth power of this ratio is very close to 2, which means for an increase in six gauge numbers, the wire diameter is changed by a ratio of 2 (No. 10 is about one-half the diameter of No. 4 AWG). A decrease of three gauge numbers doubles the area of a wire. A decrease of ten gauge numbers, for example from No. 10 to 1/0, multiplies the area and weight by approximately 10 and reduces the resistance by approximately 10.


?????????????????????????????????????????
__________________
Max H,
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.
Max Hubrich is offline   Reply With Quote
Old 04-20-2008, 08:23 PM   #21
Junior Member
 
Join Date: Jan 2008
Posts: 21
I just put an xantrex pro 2.0 inverter/charger in my coach this weekend. 4 guage will not support 300amps dc, I was told to use 1/0, which I did. my 2000watt inverter had no problem running my microwave and my ac at the same time, although not for long as it will kill any battery bank, I have six trojan t135.

I read in the mannual that some motors and compressors have a really high start up current, maybe your freezer does not like the modified sine wave, or your power wire is too small?
__________________
zeddy is offline   Reply With Quote
Old 04-21-2008, 09:17 AM   #22
Senior Member
 
Join Date: Jan 2008
Location: Big Bear Lake, Ca
Posts: 886
A 2000 watt inverter with a 4000 surge capacity should have 2/0 gauge wire or better dependent upon wire length. On my Xantrex 1850 I used 2/0 for a 5 foot run and have had no problems. You are 6 - 8 sizes too small. The positive and ground wires should be the same gauge, both are limiting. You are lucky you didn't have a fire.

I make up my own cable. On a Xantrex too small a size 12V cable like you have will show as a fault.

Your inverter should be fine but you fried your Frig.

Get 2/0 it's very thick, about the same diameter as your pinky finger. Use 2/0 or better for both the positive and negative 12v. wiring. If close to 5' or slightly over go to 3/0. Don't go over 8'. Take the negative off the negative battery post not from coach ground. Both leads need to come from the battery.
__________________
2004 CRV TOAD/1990 WRANGLER TOAD ROCK BUILT
Forest Grump is offline   Reply With Quote
Old 04-21-2008, 10:08 AM   #23
Senior Member
 
Max Hubrich's Avatar


 
Workhorse Chassis Owner
Join Date: Mar 2007
Location: Pikeville, NC
Posts: 1,724
Thanks Forest,

I'll do it!!!
__________________
Max H,
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.
Max Hubrich is offline   Reply With Quote
Old 04-22-2008, 12:32 PM   #24
Senior Member
 
Join Date: Jan 2008
Location: Big Bear Lake, Ca
Posts: 886
Don't forget to get a 400 amp fuse. If you want the type and brand let me know and I'll send you info on it. It should be mounted on the positive line inches from the battery.
__________________
2004 CRV TOAD/1990 WRANGLER TOAD ROCK BUILT
Forest Grump is offline   Reply With Quote
Old 04-22-2008, 04:41 PM   #25
Senior Member
 
Max Hubrich's Avatar


 
Workhorse Chassis Owner
Join Date: Mar 2007
Location: Pikeville, NC
Posts: 1,724
Forest,
I installed a 500 amp current limiter.
__________________
Max H,
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.
Max Hubrich is offline   Reply With Quote
Old 04-22-2008, 06:44 PM   #26
Senior Member
 
Join Date: Jan 2008
Location: Big Bear Lake, Ca
Posts: 886
High Amperage JLLN (class T) Fuses are recommended for this application. I am not sure if a current limiter will protect you.
__________________
2004 CRV TOAD/1990 WRANGLER TOAD ROCK BUILT
Forest Grump is offline   Reply With Quote
Old 05-04-2008, 05:57 PM   #27
Junior Member
 
Join Date: Mar 2008
Location: Annapolis, MD
Posts: 19
Max, I'm not sure if you ever got the answer to your question regarding the AWG guage number versus the size of the wire. There is a formula. I recommend you read:

http://en.wikipedia.org/wiki/American_wire_gauge

-Mark
__________________
MarkS is offline   Reply With Quote
Old 05-18-2008, 10:46 AM   #28
Senior Member
 
Max Hubrich's Avatar


 
Workhorse Chassis Owner
Join Date: Mar 2007
Location: Pikeville, NC
Posts: 1,724
Good news update-

I re-did the whole operation.

I installed a 1000 watt pure sine wave inverter("Cotek" brand). I used 2/0 ga cable, the longest run is about 42" (neg). The chassis ground wire is 6 ga. I overkilled the whole wire gauge situtation. My "Good Governor" no longer "ground faults". The new Freezer/refrigator is running fine (-22F).

We're happy campers in Maine right now.

Thank you all for your inputs-- Here are some pics,


Inverter install



2/0 cables



New Freezer/Refridge
__________________

__________________
Max H,
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.
Max Hubrich 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
Splendide installation problem. CaptBill Winnebago Industries Owner's Forum 11 12-06-2008 05:03 PM
Inverter Installation Provelogear Damon 16 05-08-2008 04:46 PM
Inverter installation in a 2003 Scottsdale park_ridge_dave Newmar Owner's Forum 7 06-14-2007 04:15 AM
Inverter installation? Ultrastryk RV Systems & Appliances 4 03-07-2007 07:52 AM
Inverter Installation CYOUL8R MH-General Discussions & Problems 5 06-26-2005 01:51 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:09 PM.


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