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06-13-2015, 09:13 PM
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#1
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Senior Member
Join Date: Jan 2010
Location: Wade N C
Posts: 277
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Question for Electrician
I would like to convert my 2015 Hemsiphere Lite 272RLIS TT that has 30 Amp service to 50 Amp. I know I need to change the main breaker to a 50 Amp, buy a 50 Amp cord and change the female connector on the TT. Is that all? Is the wiring sufficient to handle the load? We're used to the 50 Amp service in our 5er and if possible would like to change our new TT. I did notice on some units similar to ours that was pre wired for a second AC, they had 50 Amp service.
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George Scott
2015 Salem Hemisphere Lite 272RLIS
2006 Heartland BH 3400/Summer Home
2021 Sabre 37FBT
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06-13-2015, 09:28 PM
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#2
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Member
Join Date: Feb 2015
Location: NH
Posts: 84
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Your 30 amp is a 3 wire system. Probably has 10 gauge from panel to the receptacle. For 50 amp, it's a 4 wire receptacle and will need a larger gauge wire from panel to that receptacle. Not a simple change.
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Snyder Family - Pelham, NH
2015 Sunseeker 3170DS
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06-13-2015, 09:37 PM
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#3
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Senior Member
Join Date: Feb 2015
Posts: 847
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youll use a 50 amp cord to a 50 amp panel. then run one leg of 110 to your existing panel making it a sub panel. youll then run off the other leg of the 50 panel to your auxilliary loads. the trailer wont be wired for a 2nd ac. i usually just run surface mount to get the power to the vent.
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06-13-2015, 09:39 PM
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#4
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Member
Join Date: May 2015
Posts: 97
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the 50 amp panels are wired to use 2 hot legs where as the 30 only has 1 hot leg. Just putting a breaker in and changing your shore power cord wont work. you would need to buy a new service panel that can take the 50 amp service. but the real reason is why do you want to change to a 50 amp service? are you planning on having a second AC installed or in another way increase the power use of your TT. The current service installed on your TT is sized for what load is there. if your wanting to use the 50amp outlets at campgrounds I would just get a 50 to 30 adapter.
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2015 Cedar Creek Silverback 33IK
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06-13-2015, 09:41 PM
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#5
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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The most difficult thing would be fishing the new wire from the new 50A receptacle to the new box. Easiest way to do that is to tape the new 8ga 3 wire with ground to the existing 30A wire and pull it.
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06-13-2015, 09:58 PM
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#6
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Senior Member
Join Date: Dec 2012
Posts: 1,255
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I would have to ask.. considering that it would be a fairly tall order of business and expense to rewire for 50amp.. is there a specific reason? There might be a more efficient and less expensive alternative to what you are trying to accomplish.
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06-13-2015, 10:18 PM
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#7
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Senior Member
Join Date: Feb 2015
Posts: 847
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i think he just wants a second ac yarome. he can just run a second cord...
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06-14-2015, 08:24 AM
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#8
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Senior Member
Join Date: Dec 2012
Posts: 1,255
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Quote:
Originally Posted by Crockett
he can just run a second cord...
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That would make better sense. I'm from the old school where you lick your finger and touch a wire to test for current... if it only goes to your shoulder.. that's 110. If it hits you down into your gut.. that's 220. Converting a 30a RV to 50a.. that's just down right scary.
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06-14-2015, 11:01 AM
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#9
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Member
Join Date: Dec 2014
Location: Kennesaw
Posts: 43
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Wow some of these suggestions could seriously hurt or kill someone. Or if your lucky only burn down the camper. I agree with everything elrand said except for the adapter. Reason is you will still have 50a on a 10 gauge wire. Not good if you go with a second A/C. Still a fire hazard. Unless the RV adaptors have some kind of fuse in them to get from 50a to 30a. If so then your fine. But then again you right back where you started. I would rewire the whole system. 30 years as a commercial and industrial electrician.
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TT-2015 Salem 27RKSS
TV-2013 Toyota Tundra
Days Camping
'14-7
'15-28
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06-14-2015, 11:06 AM
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#10
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Member
Join Date: Dec 2014
Location: Kennesaw
Posts: 43
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Quote:
Originally Posted by Yarome
That would make better sense. I'm from the old school where you lick your finger and touch a wire to test for current... if it only goes to your shoulder.. that's 110. If it hits you down into your gut.. that's 220. Converting a 30a RV to 50a.. that's just down right scary.
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Home owners rule:
2 wires= hookem up
3 wires= screws' em up
4 wires= "censor, censor" em up.
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TT-2015 Salem 27RKSS
TV-2013 Toyota Tundra
Days Camping
'14-7
'15-28
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06-14-2015, 11:15 AM
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#11
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Senior Member
Join Date: Sep 2012
Location: Virginia
Posts: 9,935
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Our RV tech also along with the other changes the converter would also need changing????
We ran another breaker box and now have two 30A pigtails / cords the second ran to a 50A to 30A adaptor for the pedestal the 30A beaker box will protect the trailer.
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2005 Dodge 3500 Cummins
2017 Wildwood Lodge 4092 BFL
1966 Mustang GT
1986 Mustang SVO
Lillie Spoiled Rotten Boxer Mix
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06-14-2015, 12:46 PM
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#12
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Senior Member
Join Date: May 2014
Location: Waterloo Region
Posts: 729
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You would be OK if you replace the 30A socket on the camper with a 50A plug, continue to run to the existing converter off one leg and wire the second leg to a new 50A panel with appropriately sized wire. DO NOT change the 30A breaker in the existing converter to 50A... the existing wiring from the socket to that converter is only sized for 30A as is the bus inside the converter - you will melt/burn something. You could then move some circuits from your existing 30A panel to the new panel to balance the loads.
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2015 Rockwood Signature UltraLite 8282WS Platinum, GY Marathon LRD, TST 507RV TPMS
2005 GMC 2500HD CCSB D/A, Curt E16, Prodigy P2, Garmin RV760LMT w/BC-20 b/u cam
Self restraint is for the young. I'm old and want it NOW!
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06-14-2015, 12:46 PM
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#13
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Senior Member
Join Date: Feb 2015
Posts: 847
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Quote:
Originally Posted by Tank99
Wow some of these suggestions could seriously hurt or kill someone. Or if your lucky only burn down the camper. I agree with everything elrand said except for the adapter. Reason is you will still have 50a on a 10 gauge wire. Not good if you go with a second A/C. Still a fire hazard. Unless the RV adaptors have some kind of fuse in them to get from 50a to 30a. If so then your fine. But then again you right back where you started. I would rewire the whole system. 30 years as a commercial and industrial electrician.
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what suggestion was that? nobody said anything about what gauge wire, just that they would runa leg. 50 amp, 8 ga and 30 gets 10ga.
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06-14-2015, 04:13 PM
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#14
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Member
Join Date: Dec 2014
Location: Kennesaw
Posts: 43
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Crokett I missed your first post. I was on my phone scrolling with my thumb. I will agree with your first post 100 percent. I was referring to the licking of the fingers (I think he is joking) and 8 gauge 3 wire. Not the right number of conductors which would leave me to believe there would be some kind of rigging going on. I should have worded my first sentence differently.
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TT-2015 Salem 27RKSS
TV-2013 Toyota Tundra
Days Camping
'14-7
'15-28
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06-14-2015, 04:28 PM
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#15
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Member
Join Date: May 2015
Posts: 97
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Quote:
Originally Posted by Tank99
Wow some of these suggestions could seriously hurt or kill someone. Or if your lucky only burn down the camper. I agree with everything elrand said except for the adapter. Reason is you will still have 50a on a 10 gauge wire. Not good if you go with a second A/C. Still a fire hazard. Unless the RV adaptors have some kind of fuse in them to get from 50a to 30a. If so then your fine. But then again you right back where you started. I would rewire the whole system. 30 years as a commercial and industrial electrician.
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The only reason I suggested the adapter is if 1. The 50a outlets tend to be less abused at campsites and 2. No changes to the current loads on the TT. Scotty said he saw trailers with prewired for the second ac not that he was going to add one
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2015 Cedar Creek Silverback 33IK
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06-14-2015, 05:11 PM
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#16
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Senior Member
Join Date: Nov 2013
Location: Seaford, De
Posts: 2,377
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why would you buy a new camper that you already knew doens't meet your demands or needs? You can get 50 amp as an option in most campers these days. Should have just looked harder or ordered one.
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David & Lynn 2014 Coachmen Chaparral Signature 327 RLKS 2016 Ford F350 Lariat CC Dually
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06-14-2015, 11:30 PM
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#17
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Senior Member
Join Date: Feb 2015
Posts: 847
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Quote:
Originally Posted by Tank99
Crokett I missed your first post. I was on my phone scrolling with my thumb. I will agree with your first post 100 percent. I was referring to the licking of the fingers (I think he is joking) and 8 gauge 3 wire. Not the right number of conductors which would leave me to believe there would be some kind of rigging going on. I should have worded my first sentence differently.
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its all good...thought maybe said something dead wrong ..pardon the pun. a lot of coaches ( 27' and up) are built with one AC. these may cool inadequately in quite a few areas of the US. some people may not want to step up to a coach with 50 amp service. a second AC would be a pretty common upgrade IMO...
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06-15-2015, 11:38 AM
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#18
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Senior Member
Join Date: Jan 2010
Location: Wade N C
Posts: 277
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No all is cool. Thanks all for the comments. Was just wondering what was involved and I'm no electrician. Not looking to install a second AC. Wife is just used to running Hair dryer while AC is on etc (in our 5er). She ask so I ask. No problem. 30 AMP it shall be...... We love this unit and out previous units were all 30 Amp.
__________________
George Scott
2015 Salem Hemisphere Lite 272RLIS
2006 Heartland BH 3400/Summer Home
2021 Sabre 37FBT
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08-16-2015, 07:03 PM
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#19
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Member
Join Date: Jan 2013
Posts: 64
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The reason I'd consider going from 30A to 50A is not to add a second A/C. When our single A/C is running and the microwave is running, either the trailer's 30A breaker will trip or the park's 30A will trip. With the plug converter, it works most of the time but if the water heater starts or a hair dryer is used, the trailer breaker will trip. I've considered unhooking the A/C circuit from the panel, adding a single circuit breaker box and supplying power through a # 12 extension cord and plugging it into the park's 20A outlet.
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08-24-2015, 08:35 AM
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#20
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30+ year RV'er
Join Date: Feb 2015
Location: Manassas, VA
Posts: 24
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Issue with 50A to 30A dogbone adapter
Quote:
Originally Posted by elrand
The only reason I suggested the adapter is if 1. The 50a outlets tend to be less abused at campsites and 2. No changes to the current loads on the TT. Scotty said he saw trailers with prewired for the second ac not that he was going to add one
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Risk of fire. The danger is between the 50A breaker at the campground panel and the 30A breaker in the RV. In other words, the 30A cord and where it makes the transition from cord to the RV's 30A hard wire that goes to the RV's breaker panel. I have repaired an RV where the 30A cord/hard wire transition (in a metal junction box) burned up all of the wiring inside the junction box. If it wasn't for the metal junction box, it would likely have burned up the RV instead. Everything between the campground panel and the RV's breaker panel (internal RV wiring and cord) is designed to carry 30A - and you will be plugging it into a 50A breaker. Ask any electrician about attaching a 30A cord to a 50A breaker.
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