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01-02-2017, 11:58 AM
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#1
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Senior Member
Join Date: Jun 2016
Posts: 139
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50A site with 30A TT
I'm wanting to reserve a site at a campground that only has 50A sites. However, my TT is 30A.
Is there an adapter that can be safely used to simply convert the 50A service at the post to 30A at the TT?
Seakayaker
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Charleston, SC
2016 Silverado 1500 LTZ
2016 Wildwood 27RKSS
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01-02-2017, 12:02 PM
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#2
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,738
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Quote:
Originally Posted by seakayaker
I'm wanting to reserve a site at a campground that only has 50A sites. However, my TT is 30A.
Is there an adapter that can be safely used to simply convert the 50A service at the post to 30A at the TT?
Seakayaker
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Yep, and you can find them on Amazon, at about any RV dealer, and in even the small RV sections at Wal_Mart.
I like the dogbone type myself, instead of the straight plug type. The dogbone type, allow you to close the RV pedestal cover, and the straight type usually don't.
Here is the dogbone type:
https://www.walmart.com/ip/Road-Powe...0Z90oAtjcnO0_0
and here is the straight plug type, which when you usually attach your RV power cord to it, extends too far to shut the pedestal cover, unlike the dogbone type.:
https://www.walmart.com/ip/Road-Powe...apter/16817352
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2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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01-02-2017, 12:02 PM
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#3
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,502
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Yes, it has a 50a male end to plug into the 50a outlet on the campground pedestal and a 30a female end into which you plug your TT 30a cord. Wal*Mart has 'em. There are many threads here showing pictures, recommending retail sellers, etc. Do a search for electrical adapters and pick the one I described.
DOH... too slow!
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2015 FR Wildcat 295RSX / GMC Sierra
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01-02-2017, 12:09 PM
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#4
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Senior Member
Join Date: Jan 2011
Location: Part Timing It Now
Posts: 3,452
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Quote:
Originally Posted by seakayaker
I'm wanting to reserve a site at a campground that only has 50A sites. However, my TT is 30A.
Is there an adapter that can be safely used to simply convert the 50A service at the post to 30A at the TT?
Seakayaker
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Yes there is. You can get it at CW or if your local Walmart has a decent camping section, you can find it there also......cheaper.
Power Grip Adapter - 50A Male to 30A Female - Camco 55175 - Electrical Adapters - Camping World
Yeah, I was even slower looking for a pic of my dogbone.....which I never found BTW!
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"PT Crew Members Since 9/2010"
2011 RAM 2500 HD 6.7L CTD Crew
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01-02-2017, 12:16 PM
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#5
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Senior Member
Join Date: Jun 2016
Posts: 139
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Quote:
Originally Posted by rracer5
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Perfect! Just wanted to be sure.
Thanks all around,
Seakayaker
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Charleston, SC
2016 Silverado 1500 LTZ
2016 Wildwood 27RKSS
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01-02-2017, 12:35 PM
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#6
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Senior Member
Join Date: Jul 2010
Location: Waynesville
Posts: 14,428
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Quote:
Originally Posted by seakayaker
I'm wanting to reserve a site at a campground that only has 50A sites. However, my TT is 30A.
Is there an adapter that can be safely used to simply convert the 50A service at the post to 30A at the TT?
Seakayaker
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In your travels you will encounter times when you may want to adapt to other power oulets,like 30 to 20 just to power for charging batt! Also a selection that can be used to check pedal power! Youroo! !
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01-02-2017, 01:43 PM
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#7
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Senior Member
Join Date: Dec 2014
Posts: 423
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My TT is 30 Amp also, anytime there is 50 Amp available, I use my adapter and plug into the 50 Amp. In a lot of campground the 30 Amp circuit breakers have been tripped so many times they are weak and trip easy. That's why I plug into the 50 Amp if available.
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01-02-2017, 01:47 PM
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#8
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Member
Join Date: Sep 2016
Posts: 97
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Generally you will find that there is a 30 amp outlet there as well. They report the 50 amp to let high amperage user know that its available. It just sort of tells you the max amperage available but not the only
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01-02-2017, 02:32 PM
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#9
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7 Year Class A RV'er
Join Date: Oct 2014
Location: Winter Park, FL
Posts: 1,068
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All of these are great responses. Our current RV is 50A but our last one was 30A. I always carry adapters with me for just about any scenario. For future reference, there are also adapters to allow a 50A RV to connect via a 30A service if that's all that is available. In fact, you can run just about anything in a 30A RV from a single 110V outlet so long as you don't use the amp hog devices on board, like microwaves or blow dryers. Just be sure your wire size is adequate and don't route the wire under anything just in case.
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2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
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01-02-2017, 02:57 PM
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#10
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Senior Member
Join Date: Nov 2013
Location: Kirtland, OH
Posts: 328
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Running a 30 amp rig off a 50 amp service is fine, ONLY if the adapter has a 30 amp fuse or breaker inside. Otherwise, any short circuit between the trailer's internal 30 amp breaker and the pylon will start a fire in the power cord, the trailer connector or the main trailer feed. I have seen campgrounds loan unprotected adapters to campers. This is electrical insanity. I have asked to be moved away from anyone using this setup. I am a retired licensed professional electrical engineer.
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William & Sara
2012 Silverado 2500 HD DA
2014 Cedar Creek 38CK
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01-02-2017, 03:02 PM
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#11
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Senior Member
Join Date: Nov 2013
Posts: 1,947
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How common is it to find a 50 to 30 adapter with a fuse or breaker as you say. Seems all I have encountered are straight unprotected ones....does it make a difference if one uses a surge protector?
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2016 Chevy Silverado 2500 Duramax
2016 Rockwood 8289WS, Diamond Pkg.
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01-02-2017, 03:16 PM
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#12
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Senior Member
Join Date: Nov 2013
Location: Kirtland, OH
Posts: 328
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I haven't seen one but I haven't looked very hard. Your surge protector should help but it's protecting you from massive overloads. I've seen a campground worker mowing grass and cut a camper's power cord. At least the fire was outside. Many units have long power wire runs from the camper power cord socket to the distribution panel inside. This wire is barely 30 amp rated. I'd hate to see it get shorted while connected to a 50 amp pylon, although it's not very likely. All power feeds should be fused for the rating of the wire, up stream.
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William & Sara
2012 Silverado 2500 HD DA
2014 Cedar Creek 38CK
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01-02-2017, 05:17 PM
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#13
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Senior Member
Join Date: Apr 2016
Location: Cedar Creek Lake, TX
Posts: 3,477
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Quote:
Originally Posted by Sterlingsilver
Running a 30 amp rig off a 50 amp service is fine, ONLY if the adapter has a 30 amp fuse or breaker inside. Otherwise, any short circuit between the trailer's internal 30 amp breaker and the pylon will start a fire in the power cord, the trailer connector or the main trailer feed. I have seen campgrounds loan unprotected adapters to campers. This is electrical insanity. I have asked to be moved away from anyone using this setup. I am a retired licensed professional electrical engineer.
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This is accurate, although I've never seen one. A couple days ago I was trying to explain this to someone here but finally just dropped it. Lol
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01-02-2017, 10:04 PM
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#14
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Senior Member
Join Date: Dec 2015
Posts: 294
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No it is not accurate. The power cord is protected by the 30 amp breaker in the trailer.
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01-02-2017, 10:09 PM
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#15
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Senior Member
Join Date: Aug 2013
Posts: 7,916
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You could make one with a 30 amp breaker at the pole if 50 amp breakers were all that were available.
Sent from my iPhone using Forest River Forums
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01-02-2017, 10:19 PM
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#16
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Senior Member
Join Date: Nov 2013
Location: Kirtland, OH
Posts: 328
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Quote:
Originally Posted by tkarper14
No it is not accurate. The power cord is protected by the 30 amp breaker in the trailer.
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This kind of electrical thinking is how people get killed.
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William & Sara
2012 Silverado 2500 HD DA
2014 Cedar Creek 38CK
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01-02-2017, 11:06 PM
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#17
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Senior Member
Join Date: Dec 2015
Posts: 294
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Tell me how? Any shorting of the power cord will trip the breaker upstream, which would be the 50 amp breaker, therefore stopping the flow of current in the power cord. Any excessive current draw over 30 amps will trip the breaker in the camper and stop the flow of current in the power cord. That is what series circuits do. Any electrical engineer should know that.
You can be plugged directly into the Hoover Dam and you would still be safe. If it wasn't so, then why do the 50 amp to 30 amp adapters not come with a breaker built in like you state we need. Thinking like yours is what causes unwarranted paranoia.
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01-03-2017, 05:12 AM
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#18
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Senior Member
Join Date: Oct 2015
Posts: 2,270
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Quote:
Originally Posted by tkarper14
Tell me how? Any shorting of the power cord will trip the breaker upstream, which would be the 50 amp breaker, therefore stopping the flow of current in the power cord. Any excessive current draw over 30 amps will trip the breaker in the camper and stop the flow of current in the power cord. That is what series circuits do. Any electrical engineer should know that.
You can be plugged directly into the Hoover Dam and you would still be safe. If it wasn't so, then why do the 50 amp to 30 amp adapters not come with a breaker built in like you state we need. Thinking like yours is what causes unwarranted paranoia.
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Have to agree. I have yet to see an adapter with a built in fuse or breaker. They may be made, good luck finding one. Over current draw and a dead short are two different things entirely. If you have a short between the rigs 30amp main breaker and the pedestal, it's going to kick the pedestal breaker no matter if its 50amp. 100 amp or 200 amps just like tkarper14 states. If someone cuts through the cord with a lawnmower and it ignites, something else is wrong, like a bad breaker at the pedestal. In that case there is another breaker further up the line at the service panel feeding those pedestals. What are you going to do, pull out the tools and do a full blown inspection by pulling apart the entire infrastructure when you arrive at a campground? This thread is going down a theoretical road which is simply going to create fear that is uncalled for.
They do use the bare minimum size conductors from the RV wall/cord connection to the main 30 amp in the RV's power center, so what. Its 100% code compliant. Perhaps all RV's should be banned or the manufacturers required to over spec code requirements?
Its not any different than the entrance cable on your house ahead of the service panel. You might only have 200 amp main breakers in your service panel but do you worry about the cable from that panel that runs through your house, along the wall to the meter socket, then up to the weather-head and on to the transformer, where there is usually a line fuse? Thats rated way more than 200 amps at the transformer because its feeding 3 other houses, and then on to Hoover dam?
I find it hard to believe those adapters, of which there are millions out there and in use, are allowed to be made and sold. If they're so inherently dangerous you would think they would be banned under the NEC. It's also strange most of them are tested and approved by UL. Perhaps they should be made only to connect 30 A to 30 A? What about a 50 A RV connected to 30 A park power with a dog bone. That scenario sounds like a worse theoretical problem electrically in reverse IMO, but there are plenty of 50 A RV's in parks that have only have 30 A pedestals right at this very second.
If you're going to look at it as "what ifs", RV cords can get cut by lawnmowers, or chewed through by a rat. You can also get struck by lightning or a train, or have someone hit a pole and drop line voltage wires down onto the service voltage wiring out at the highway. Somebody can rewire their RV wrong and back feed into the park power. I could also hit the Powerball Wednesday but I don't think that's happening.
I am surprised Sterling Silver can ever find a campsite where the neighbors wiring configuration meets his approval. He must move around the campground a lot.
Quote:
Originally Posted by wmtire
Yep, and you can find them on Amazon, at about any RV dealer, and in even the small RV sections at Wal_Mart.
I like the dogbone type myself, instead of the straight plug type. The dogbone type, allow you to close the RV pedestal cover, and the straight type usually don't.
Here is the dogbone type:
https://www.walmart.com/ip/Road-Powe...0Z90oAtjcnO0_0
and here is the straight plug type, which when you usually attach your RV power cord to it, extends too far to shut the pedestal cover, unlike the dogbone type.:
https://www.walmart.com/ip/Road-Powe...apter/16817352
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Seakayker, the post above is the answer to your original question. Do not buy into the fear mongering.
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01-03-2017, 05:35 AM
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#19
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World Wide Wanderer
Join Date: Feb 2016
Location: Sprung Leak, NC
Posts: 1,732
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My rigs have all been 30 amp in recent years. We carry 50-30 and 30-20 amp adapters, along with a 30 amp male replacement plug. I have been in a couple of campgrounds that did not have 30 amp outlets. I have both straight connectors as well as the dog bone. Prefer the dog bone.
Aaron
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2016 Coachmen Concord 300DS
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01-03-2017, 06:20 AM
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#20
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Senior Member
Join Date: Jun 2016
Location: Maurice, LA
Posts: 4,095
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Quote:
Originally Posted by Sterlingsilver
Running a 30 amp rig off a 50 amp service is fine, ONLY if the adapter has a 30 amp fuse or breaker inside. Otherwise, any short circuit between the trailer's internal 30 amp breaker and the pylon will start a fire in the power cord, the trailer connector or the main trailer feed. I have seen campgrounds loan unprotected adapters to campers. This is electrical insanity. I have asked to be moved away from anyone using this setup. I am a retired licensed professional electrical engineer.
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I was wondering when someone would post this information. The breaker is there to protect the electrical wiring. If you put a 30 amp cord on a 50 amp circuit without a fuse or circuit breaker there is virtually NO Protection!
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