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Old 04-30-2015, 08:30 PM   #1
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I just but in november a new Airstream 30 foot inter. 50 amp. For my firts trip to Florida i saw that the baterie where not charching whit my truck! In th campground everithing work great. Back to home, same problem. Baterie where not charging when driving. When i arrive home, iput a 50 amp. adapteur to a cord and a regular adapteur to plug at a exterior home outlet. So, now my problem is the baterie or not charging, the microwawe is not working and the blue ray. I check the fuse and I ad a 30 amp. that was burn. I figure that was the problem whit my truck not charging the baterie! I hope. For the oder problem it check the big black braker and everything is ok. But There is no electricity comming to those 3 Braker! The rest of the braker are fine! Like half of the trailer have electricity! The problem is the electric corde plug in to a regular home outlet!!!! I don't have a 30 or 50 outlet at my home and a don't want to make a rond trip to a campground to plug the airstream and see if everything working. So i need some help...Thanks. Sorry I spoke french, so my english is not to good...
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Old 04-30-2015, 09:17 PM   #2
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I hear what you're saying but not sure I have an answer for you. I have heard others say your alternator first charges your battery in your vehicle then can charge battery in airstream. So if your battery never gets fully charged while driving your vehicle it will not charge the battery in the airstream. At least that's my understanding that I have heard from others. I know that only answers part of your question hopefully others can give you more information.


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Old 04-30-2015, 10:36 PM   #3
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You may be missing a relay or fuse in the TV to charge the coach battery.
If your coach requires a 50 amp source. And you plug in to a 20 or 30 amp source at home. You are missing one hot leg. Thus only the devices connected to the other hot leg will work.
A 50 amp source equals:
2 hot legs; 1 neutral and 1 ground
A 30 amp source equals:
1 hot leg; one neutral and 1 ground.


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Old 05-01-2015, 05:49 AM   #4
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You need to hire a licensed electrician to put in a 220 volt, center tapped, 50 amp RV outlet at your house. Trailer/ car agency may be able to install proper wiring to charge batteries, while on the road.
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Old 05-01-2015, 06:22 AM   #5
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220 volt? Jim
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Old 05-01-2015, 06:28 AM   #6
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Quote:
Originally Posted by TG Twinkie View Post
You may be missing a relay or fuse in the TV to charge the coach battery.
If your coach requires a 50 amp source. And you plug in to a 20 or 30 amp source at home. You are missing one hot leg. Thus only the devices connected to the other hot leg will work.
A 50 amp source equals:
2 hot legs; 1 neutral and 1 ground
A 30 amp source equals:
1 hot leg; one neutral and 1 ground.


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Thaks i think that is my problem....
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Old 05-01-2015, 06:57 AM   #7
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Quote:
Originally Posted by dwightdi View Post
You need to hire a licensed electrician to put in a 220 volt, center tapped, 50 amp RV outlet at your house. Trailer/ car agency may be able to install proper wiring to charge batteries, while on the road.

220? Don't think this is accurate. 110v is what every campground is and if one plugs into a 220v one will blow the converter and burn up any electrical device that is turned on in the trailer. We know from experience as a licensed well respected electrical firm came and wired in a 30amp box in our garage for our last trailer and did 220 instead of 110, plugged her in and boom. $1,500 later good as new.
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Old 05-01-2015, 08:04 AM   #8
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I think your electrician wired one of the hot legs to connect with your trailers neutral...




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Old 05-01-2015, 08:32 AM   #9
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50 Amp RV connectors are actually center tapped 220 volt circuits, just like real houses. This gives you two 110 volt circuits. Just like houses. 30 amp RV services are 30 amp one phase 110 power. That is why I suggested a licensed electrician rather than a DIY person. Even some non-RV experienced electricians will not know the difference. Make sure you interview him closely before you hire him.
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Old 05-01-2015, 08:33 AM   #10
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Just because the electrician is licensed doesn't mean he/she will wire the power for the coach correctly. Make sure they understand RV wiring requirements.
50 amp RV's require 4 wires. It's not that they require 240 volts. The load is split between 2 120 volt circuits. Not wired across the two hot legs.
4 wire circuits typically have:
Black = L1
Red = L2
White = Neutral
Green = Earth Ground


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Old 05-01-2015, 08:40 AM   #11
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This conversation has been had in other threads. ALL RVs, from pop-ups to Prevosts use 120 VAC! All RV 50 amp service is comprised of 2 parallel 120 VAC circuits, a seared neutral and single ground. The hot legs from a 50 amp feed are separate in the breaker box, rack powering approx. half the 120 VAC load.

Introducing 240 VAC directly into any RV will cause extensive damage to electrical components. 30 amp service for RV use is. Single hot leg with a single neutral and ground.

Most electricians who are NOT RV savvy will simply give you a 240 volt 30 amp feed normally used for residential clothes dryers or small cook tops/ ovens.

Be really careful and really specific about your special needs when adding an RV outlet to your home.


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Old 05-01-2015, 10:22 AM   #12
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Lew is exactly right. Household electricians tend to wire stuff like they were taught to. And that does not always include RV knowledge.

I've installed my own RV outlets properly because I READ the instructions that come with the outlet before I wired it. Electricians don't read, IMHO, and just wire it up like they always have. Plumbers are the same way.

Never had a problem with mine, but like I said, I don't just assume I know what I'm doing. I do the research first. Then do the work, and test it before I hook up. There's a nicely installed 30 amp RV outlet in my garage here, and in my son's garage in Alabama for my AS.


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Old 05-04-2015, 03:50 AM   #13
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I think the RV experience in selecting the electrician is critical. What some call "two phase 110 volt service is really, center tapped, 220 volt single phase service. This is what 50 amp 4 prong RV's use. It is no different that what most houses are supplied. The difference is: in houses you use the full 220 volts to run your: range, cloths dryer, and water heater. In RV's everything runs on two center tapped 110V circuits. even when they use 4 prong 50 amp connectors. 30 amp RV connectors only have 110 volts present. If you get into industrial 3 phase 440 volts, that's a whole different world.
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Old 05-04-2015, 02:05 PM   #14
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Amen to that. I've worked with 440 3phase. Scary stuff. You get real obsessed with being darn sure it's off, so you won't be dead...,


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