Visit our Popular Forums

thebreezeman · 01-21-2015, 07:34 AM

Has anyone found a supplier who makes a shore power plug for a 50 amp
circuit, which adapts to 30 amp. On my 50a flying cloud, I won't

be running 2 a/cs very often so I'd like to just use a 30 a cord plugged directly into the 50a shore power connector, assuming I can find the proper connector.

AnnArborBob · 01-21-2015, 07:49 AM

Try something like this. It's a 30 amp cord with a 50 amp female end that plugs into your 50 amp coach connector. A whole lot less wrestling with this cord than with a "real" 50 amp cord!

50 Amp to 30 Amp Adapter Cordset with Fault Smart LED - 25' - Furrion F50AR25-SB.AM - Electrical Adapters - Camping World

AWCHIEF · 01-21-2015, 07:51 AM

Google and Amazon are excellent sources of information and RV products.
http://www.amazon.com/s/ref=nb_sb_no...30+amp+adapter

**moosetags** · 01-21-2015, 09:12 AM

An adapter is readily available at Camping World or on Amazon. These adapters are necessary as some campgrounds have only 30 amp outlets and others have only 50 amp outlets. We carry a 30 to at all times.

Brian

switz · 01-21-2015, 09:38 AM

Furrion also makes a female 50amp to two 30 amp male plugs pigtail. In some places there may be only a 30 amp outlet and a standard house outlet. Using a 30 amp female to 110Vac male plug and power goes to the trailer with 30amps on one leg and 20 amps on the other.

paiceman · 01-21-2015, 09:51 AM

Use and adapter plug, easy and cheap.

ghaynes755 · 01-21-2015, 10:01 AM

This is a 50A to 30A adapter from CampingW. Rather than another cord this allows you to use the current cable and if you have a surge protector then the SP would plug into the adapter and you should be good to go.

Click image for larger version

Name: Screen Shot 2015-01-21 at 9.59.37 AM.png
Views: 185
Size: 94.9 KB
ID: 230835

Will_Brule · 01-21-2015, 10:34 AM

You can buy an adapter cord at WalMart.

m.hony · 01-21-2015, 11:01 AM

I think the op wants to not use the heavy, stiff 50 amp cord and use a lighter, more flexible 30 amp cord. He is wanting an adapter at the trailer to facilitate the use of the lighter 30 amp cord.

TinShack · 01-21-2015, 12:57 PM

Quote:

Originally Posted by m.hony

I think the op wants to not use the heavy, stiff 50 amp cord and use a lighter, more flexible 30 amp cord. He is wanting an adapter at the trailer to facilitate the use of the lighter 30 amp cord.

That's what I was thinking too. Maybe something like this?? Amazon.com: RV Power Cord Adapter 30 amp Male TT-30P to 50 amp twist lock female SS2-50R: Automotive

Reg Mary · 01-21-2015, 03:27 PM

This is an interesting thread. So if I am understanding correctly it is OK to plug a 30 amp AS into a 50 amp out let if you use an adapter.Is there a problem with using the AC or any of the other appliances?

Thanks, Reg

iowaroots · 01-21-2015, 03:41 PM

Enjoy the journey!!

FollySteve · 01-21-2015, 04:09 PM

Admittedly, I know just enough about electrical systems to be dangerous, but I do know from residential wiring jobs long ago that 30 amp is a 110 volt circuit and 50 amp is 220 volt. And I know that 220 volt is achieved at the service panel by utilizing two positive 110 leads and one neutral (plus ground for safety) and 110 volt only uses one positive lead. So, when using the 30 to 50 amp adapter, how does it achieve the required 220 volts?

Gnorts · 01-21-2015, 04:15 PM

Here you go.

EEL Pigtail Adapter, 30A Male to 50A 125V Female | Marinco

This will connect to the trailer side 50A receptacle and allow connection of a 30A cordset with a twistlock load (trailer)end and a 3-prong line (RV park connector) end. West Marine stocks Marinco. if your nearby WM doesn't have it, they can order it. Also at Amazon. Not inexpensive.

Gnorts · 01-21-2015, 04:18 PM

Quote:

Originally Posted by FollySteve

Admittedly, I know just enough about electrical systems to be dangerous, but I do know from residential wiring jobs long ago that 30 amp is a 110 volt circuit and 50 amp is 220 volt. And I know that 220 volt is achieved at the service panel by utilizing two positive 110 leads and one neutral (plus ground for safety) and 110 volt only uses one positive lead. So, when using the 30 to 50 amp adapter, how does it achieve the required 220 volts?

Both the 30A and 50A connedctors being discussed here are 120V. There is no 240V on Airstream trailers.

ghaynes755 · 01-21-2015, 04:18 PM

Be careful. There is a bit of difference between Marine vs RV fittings.

Gnorts · 01-21-2015, 04:22 PM

Quote:

Originally Posted by Reg Mary

This is an interesting thread. So if I am understanding correctly it is OK to plug a 30 amp AS into a 50 amp out let if you use an adapter.Is there a problem with using the AC or any of the other appliances?

Thanks, Reg

Yes, you can do this. Just remember that, if you plug your 30A trailer into a 50A source, the 50A circuit breaker at the source will not protect your trailer; the 30A master breaker in the trailer's electrical panel will provide proper protection. The only portion of this setup that's at risk is the 30A cord between the trailer and the source.

ghaynes755 · 01-21-2015, 04:23 PM

Hope I get this correct. In an AS that has 50amps in reality you have a split system. One leg of the 50amps/125V goes to circuit 1 and the other leg goes to circuit 2. Each circuit has one of the A/C units on it plus other 'stuff'. You can look at the manual or the CB panel to determine which devices/outlets are on each circuit.

Just an assumption since I don't have my Classic yet but the adapter pigtails must put power to both circuits. Limitation would be that you only have a total of 30amps across both circuits. Should be able to run everything except 2 A/C units at the same time.

And no 220/240 in the trailer as has been mentioned.

Gnorts · 01-21-2015, 04:29 PM

Quote:

Originally Posted by ghaynes755

Be careful. There is a bit of difference between Marine vs RV fittings.

The twist-lock fitting at the trailer is a standard NEMA connector, which is also used on boat shore power cords. The three-pronged plug at the other end of the cord is also NEMA standard, but is not used on boat cords. Frankly, neither of these connectors is ideal for either marine or RV use, but the standard is well-established so that's what gets used.

fyi, NEMA: National Electrical Manufacturers' Association.

Also, fyi, there is now a new connector type that is approved for marine use. Also being marketed for RV use. Better, safer, also not inexpensive.

SmartPlug Systems - Shore Power Products and Accessories

scamp · 01-21-2015, 04:57 PM

Quote:

Originally Posted by FollySteve

Admittedly, I know just enough about electrical systems to be dangerous, but I do know from residential wiring jobs long ago that 30 amp is a 110 volt circuit and 50 amp is 220 volt. And I know that 220 volt is achieved at the service panel by utilizing two positive 110 leads and one neutral (plus ground for safety) and 110 volt only uses one positive lead. So, when using the 30 to 50 amp adapter, how does it achieve the required 220 volts?

Your right on most of what you said ,( regarding house electrical )but the airstream is 120 volt and either 30 amp service or 50 amp service 120 volt . Never 220 volt in North Americans airstreams . (Im sure they make airstreams with higher voltage for other countries.)220 volts will damage the electrical system in the trailer and any component pluged in to outlets plugs.

Don