Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-18-2017, 06:01 AM   #1
3 Rivet Member
 
1976 31' Sovereign
Springfield , South Carolina
Join Date: Jul 2010
Posts: 233
Adapter 240V receptacle to 120 30 Amp 76 Sovereign

First off I understand about the AS 3 prong shore line looking exactly like a 240 dryer plug and plugging into AS directly to 240 is a disaster waiting.

Also I have a Champion generator with 30AMP RV plug in place but it is NIB and stored away as I have other generators I would like to use first that have 4 prong L1420 outlets for 240V. Honda EZ3500, Powerback 5250 etc

As I understand it generators are generally wired for two 120V legs or strictly for 120V as is the Champion I got at Camper World.

I was in a Camper World several days ago and saw they had what appear to be adapter plugs to go from either 3 prong or 4 prong to the 30 AMP RV plugs and I am just wondering if these are just a simple plug in with one hot leg not attached or do both hot legs go to the 30AMP hot leg on the RV end?

My Honda EZ3500 has wheels installed and is easily moved so I was thinking of using it first though the tank has to be refilled every two hours and 7 minutes.

I tried to run a Minnie Winnie AC on one of the 120 plugs and the breaker tripped on the Honda within seconds and was just wondering if one of the Camper World adapters would give me twice the amps into 120V?

I seem to recall reading somewhere that this may not be the case.
__________________

__________________
Hummer is offline   Reply With Quote
Old 01-18-2017, 11:37 AM   #2
4 Rivet Member
 
sgschwend's Avatar
 
1986 25' Sovereign
2008 F350, 6.4L diesel , Oak Harbor, WA
Join Date: Sep 2015
Posts: 391
Images: 11
Paralleling two breakers may be a problem. It would depend on the alternator winding. If the winding are out of phase then it would not work.

You could measure between the two circuit breaker hot leads (right side of the receptacle when the ground is down). It should be zero volts. If that works measure from one receptacle hot lead to the others common lead and vise versus to see how closely match the winding are.

I would not do this because you are using the alternator in a way it was not setup for. If the builder had it setup for this they could have provided a receptacle for it.
__________________

__________________
sgschwend is offline   Reply With Quote
Old 01-18-2017, 12:46 PM   #3
3 Rivet Member
 
1976 31' Sovereign
Springfield , South Carolina
Join Date: Jul 2010
Posts: 233
Thanks for the input Sir. I went to town this morning and on a lark I stopped by Home Depot and went to the generator section and they had multiple adapters that go from this to that.
I found one marked "20Amp to 30Amp RV" It goes on to say "120/240V 20Amp Nema L14-20P" and "120v 30 Amp Nema TT-30R" and out the door only 14.01 w/ tax.

Got it home and pulled it out and subjected it to a Greenlee DM60 multimeter evaluation.

Looking at the 4 prong plug from the end with the locking spur located at 12:00, the only prong that connects with the "hot leg" of the 30Amp RV side is at the 3:00 o'clock.
position.

The 12 o'clock leg with the locking spur connects directly with the D shaped hole on the 30 AMP Plug.

Still looking at the plug as above the 6:00 prong connects with the ground at 4:00 o'clock.

The last prong located at 9:00 does not connect with anything on either end.

I am therefore assuming if this thing is going to deliver 30 amp capability it will be from the internal windings at one take off point????

Guess I need to crank up the EZ3500 and see what one receptacle will run electric heaters and light bulbs. I don't recall the methodology I used before as I remember I had loaded it to like 3084 watts and it ran fine. I added one more 60 watt bulb and it started lugging immediately. It only has one 4 prong round receptacle for the L1420P and one breaker for everything.

I got it from a friend who got it to power up a pressure washer and it would not do it so I got it with like a couple hours on it and I put a hour meter on it for my use. It has been a very good little unit and the only thing negative I can say is the gas tank at like 1.6 gal capacity and 2hr 7 min of run time topped off.
__________________
Hummer is offline   Reply With Quote
Old 01-18-2017, 06:19 PM   #4
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 4,929
Images: 2
Blog Entries: 5
The RV outlet and plug are NOT the same as a dryer outlet.
There is a specific outlet intended to be used in RV service.
Be careful what you buy and use.
__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 01-18-2017, 06:25 PM   #5
3 Rivet Member
 
1976 31' Sovereign
Springfield , South Carolina
Join Date: Jul 2010
Posts: 233
Yes they just look similar. Now I have to find a RV plug to wire up to a receptacle.
__________________
Hummer is offline   Reply With Quote
Old 01-19-2017, 03:26 AM   #6
3 Rivet Member
 
1976 31' Sovereign
Springfield , South Carolina
Join Date: Jul 2010
Posts: 233
I guess the best thing about the one I got was I went from a standard two vertical small prongs with a ground that tends to get loose quick and replaced it with a healthy 4 prong round plug with a locking mechanism.

The one I got was located in a bin right under the generators and has a green background on the wrapper. There are like five different colors that do different things and of course they have the one most folks find at camper stores described above.

This is the adapter I got that fits the EZ3500 and is a Devilbliss Powerback (5200 Watt run load) but discontinued several years back. It is far to heavy to hoss around with a camper even though it has wheels. I hook that one to the house in ice storms/power failures. http://www.homedepot.com/p/PowerFit-...2011/203213227. This plug/adapter is much heavier construction than the normal ones I got before and of course locks into generator.

This is the 30AMP RV plug which should be on isle 2 in the normal electrical section.
http://www.homedepot.com/p/Leviton-3...-00T/202077649

This is the one I went to find but was not in stock.
http://www.homedepot.com/p/30-Amp-Ge...V30F/202510179 Note: This one is for bigger generators with 30 amp plugs it needs to be ordered on line. It will not pull up on the store computer unless you give them the number for some reason. I was told they list stuff on line they do not carry in stores but will send to you or you can pick it up in store.

Guess this all boils down to I might need the Champion with the 30AMP RV plug and strictly 120 volt for long term use where I need 30 amps.

On my military generators I have them wired with 30 Amp plugs and 10 ga wire even though they are only 5KW but will take a overload so I upgraded the plugs/line to reduce line loss.
__________________
Hummer is offline   Reply With Quote
Old 01-19-2017, 03:10 PM   #7
Rivet Master
 
2015 25' Flying Cloud
2016 30' Flying Cloud
Blenheim Ontario , Ontario
Join Date: May 2015
Posts: 956
Quote:
Originally Posted by Hummer View Post
First off I understand about the AS 3 prong shore line looking exactly like a 240 dryer plug and plugging into AS directly to 240 is a disaster waiting.

Also I have a Champion generator with 30AMP RV plug in place but it is NIB and stored away as I have other generators I would like to use first that have 4 prong L1420 outlets for 240V. Honda EZ3500, Powerback 5250 etc

As I understand it generators are generally wired for two 120V legs or strictly for 120V as is the Champion I got at Camper World.

I was in a Camper World several days ago and saw they had what appear to be adapter plugs to go from either 3 prong or 4 prong to the 30 AMP RV plugs and I am just wondering if these are just a simple plug in with one hot leg not attached or do both hot legs go to the 30AMP hot leg on the RV end?

My Honda EZ3500 has wheels installed and is easily moved so I was thinking of using it first though the tank has to be refilled every two hours and 7 minutes.

I tried to run a Minnie Winnie AC on one of the 120 plugs and the breaker tripped on the Honda within seconds and was just wondering if one of the Camper World adapters would give me twice the amps into 120V?

I seem to recall reading somewhere that this may not be the case.
I believe that the Camping World adapter feeds off of one leg only to provide 30 Amp.
If it was miswired and fed from both legs, it would blow a fuse/CB rapidly due to the two legs being out of phase.
In that brief moment, much damage to your electrical system is possible.

There is an advantage to using a 50/30 adapter in a busy campground:
Most of the RVs are 30 amp, drawing 30 amp, from the campground supply. This can result in a lower line voltage to your rig, especially in the summer when airconditioners are in use. Many campgrounds are overloaded when this happens.
Where-as there are not that many 50 Amp rigs, and therefore the supply would be less stressed, resulting in more 'grunt' going to your RV.

Trailer Trash waiting for that time........"
__________________
MelGoddard is offline   Reply With Quote
Old 01-20-2017, 02:40 AM   #8
3 Rivet Member
 
1976 31' Sovereign
Springfield , South Carolina
Join Date: Jul 2010
Posts: 233
Good idea, many thanks.
__________________
Hummer is offline   Reply With Quote
Old 02-14-2017, 09:31 AM   #9
Rivet Master
 
Mollysdad's Avatar
 
Currently Looking...
Tampa , Florida
Join Date: Feb 2017
Posts: 717
Check marine hardware too.
I'd swear the 30 amp RV side of the cord is the same as a 30 amp boat plug. Three prong twist lock.

Keep in mind that in the RV world, 30 amp is one 30 amp 120 volt service, while 50 amp is two 50 amp 120 volt services. (not 240).

so 50 amps is much more than the jump from 30 to 50.
__________________
Mollysdad is online now   Reply With Quote
Old 02-14-2017, 10:49 AM   #10
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 1,896
Quote:
Originally Posted by Mollysdad View Post
...
Keep in mind that in the RV world, 30 amp is one 30 amp 120 volt service, while 50 amp is two 50 amp 120 volt services. (not 240).

so 50 amps is much more than the jump from 30 to 50.
Regarding the "(not 240)" I had seen that information posted on here, repeated it once, and was told no, that was not true. The two 120 legs of a 50 amp service are, in fact, the two hot sides of a 240 volt service with a neutral. Among many resources, see:

http://www.myrv.us/electric/Pg/50amp_Service.htm

Regarding it being much more, that is true, with respect to capacity. 50A service supports a combination 240 volt and 120V loads as long as the total power draw does not exceed 50 amps on a leg, up to 12,000 watts. Some larger units have 240V loads like residential stoves, dryers, etc. Airstream trailers with 50A service, AFAIK, have only 120V loads split into two main circuits, one on each phase. 30A service is 30 amps at 120V, or only 3600 watts.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 02-24-2017, 10:07 PM   #11
Rivet Master
 
Mollysdad's Avatar
 
Currently Looking...
Tampa , Florida
Join Date: Feb 2017
Posts: 717
Quote:
Originally Posted by Al and Missy View Post
Regarding the "(not 240)" I had seen that information posted on here, repeated it once, and was told no, that was not true.
Let me clarify. In the RV, there are no 240 circuits. (that I've seen).
However, the pedestal plug is wired exactly like 240v. stove plugs, two hots, an neutral, and a ground. The RV wiring takes that configuration and takes one side hot to neutral, the other side hot to neutral as the two separate busses. You never take hot to hot in an RV, which would be 240v. Am I correct?
(I just posted this question elsewhere before I saw this, as a friend was wiring a RV power post at his house and I realized there was only one way to do it.)
__________________
Mollysdad is online now   Reply With Quote
Old 02-24-2017, 10:49 PM   #12
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 1,896
Quote:
Originally Posted by Mollysdad View Post
Let me clarify. In the RV, there are no 240 circuits. (that I've seen).
However, the pedestal plug is wired exactly like 240v. stove plugs, two hots, an neutral, and a ground. The RV wiring takes that configuration and takes one side hot to neutral, the other side hot to neutral as the two separate busses. You never take hot to hot in an RV, which would be 240v. Am I correct?
(I just posted this question elsewhere before I saw this, as a friend was wiring a RV power post at his house and I realized there was only one way to do it.)
Correct, at least in our (stock) Airstreams. Some RVs have residential stoves and other appliances that actually use the 240V leg to leg voltage.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 02-25-2017, 07:54 AM   #13
1 Rivet Member
 
1986 32' Limited
bayville , New Jersey
Join Date: Dec 2016
Posts: 8
house gen to 30a trailer connection

I have this configuration, I travel with my 4400w house genset and with the adapter it works great with our AS Limited.
The adapter would be recommended by the generator manuf for use with 30a rv connection (CW also have the same). cost $30 or less no fuss, no head scratching and no worries. They are wired right.... unless someone reworked your trailer.
When you plug in to the generator check the other end for:
1 hot leg, 1 ground leg and 1 neutral leg.
__________________

__________________
bunlacken is offline   Reply With Quote
Reply

Tags
sovereign


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
Wiring 30 amp receptacle BlueBelle Electrical - Systems, Generators, Batteries & Solar 9 11-03-2015 11:49 AM
Electrical conversion 120v to 240v for New Zealand airstreamz Electrical - Systems, Generators, Batteries & Solar 31 04-01-2014 02:31 AM
Question: How do I rewire a light fixture from 240v to 12v? crabbey1 Lights - Interior & Exterior 25 11-05-2013 11:42 PM
Can a 30AMP 240v provide 2 30AMP 120v?? VeggieBullet Electrical - Systems, Generators, Batteries & Solar 17 05-29-2013 09:28 PM
30-amp TT receptacle worksology Electrical - Systems, Generators, Batteries & Solar 9 08-04-2010 11:12 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- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:47 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

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