Go Back   Thor Forums > Thor Tech Forums > Modifications and Updates
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 01-03-2018, 07:17 PM   #1
Member
 
Brand: Thor Motor Coach
Model: Thor 29M Hurricane
State: Wisconsin
Posts: 30
THOR #7934
50 amp extension

I want to get a 50 amp extension chord. Any suggestions ? Wire gauge, # of wires, Length? What about reasonable cost.
__________________

__________________
CHUCK52 is offline   Reply With Quote
Old 01-03-2018, 07:45 PM   #2
Senior Member
 
Brand: Still Looking
Model: Fleetwood Storm 32V - pre
State: Alabama
Posts: 1,578
THOR #6826
Just buy one off the internet in whatever length you need. Search for RV power cord. Good ones are spendy!
__________________

__________________
Pete'sMH is offline   Reply With Quote
Old 01-03-2018, 07:58 PM   #3
Member
 
Brand: Thor Motor Coach
Model: Thor 29M Hurricane
State: Wisconsin
Posts: 30
THOR #7934
Quote:
Originally Posted by Pete'sMH View Post
Just buy one off the internet in whatever length you need. Search for RV power cord. Good ones are spendy!
Yes, I'm looking at them. Lots of choices. How long is too long, and what gauge wires are recommended?
__________________
CHUCK52 is offline   Reply With Quote
Old 01-03-2018, 08:24 PM   #4
Senior Member
 
Brand: Thor Motor Coach
Model: hurricane 32n
State: Florida
Posts: 769
THOR #4158
I have 15 feet extension, in last 2 years haven’t used it. Normally 15 feet should be plenty. My 2 cents!
__________________
Jerry and Debbie
2015. Hurricane 32N /Kia Soul toad
Retired
Crawfordville Fl. Vietnam Vet.
Jegdrum5050 is offline   Reply With Quote
Old 01-03-2018, 08:36 PM   #5
Member
 
Brand: Thor Motor Coach
Model: Thor 29M Hurricane
State: Wisconsin
Posts: 30
THOR #7934
Quote:
Originally Posted by Jegdrum5050 View Post
I have 15 feet extension, in last 2 years haven’t used it. Normally 15 feet should be plenty. My 2 cents!

I have a 31' MH. Have you gone front first in a back in site, with all the hookups on the opposite side? Is the 15' enough for this condition?
__________________
CHUCK52 is offline   Reply With Quote
Old 01-03-2018, 08:38 PM   #6
Senior Member
 
Brand: Thor Motor Coach
Model: hurricane 32n
State: Florida
Posts: 769
THOR #4158
Didn’t have to use it face first.
__________________
Jerry and Debbie
2015. Hurricane 32N /Kia Soul toad
Retired
Crawfordville Fl. Vietnam Vet.
Jegdrum5050 is offline   Reply With Quote
Old 01-03-2018, 10:05 PM   #7
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 11,164
THOR #8860
If your rig is doing it's best to use ALL of those amps: shorter will always be better.
Aren't those 50 amp cords pretty heavy to haul and store?

I keep a spare 50 foot cord with me, but I'm hooking up to 30 amps.
__________________
Good Sam Member 843599689
FMCA Member F473304

Current coach: Tiffin Wayfarer 24 BW
Former coach: Thor Outlaw 29-H
Bob Denman is offline   Reply With Quote
Old 01-03-2018, 10:06 PM   #8
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 1,454
THOR #6411
50 amp shore lines are usually 6 gauge for L1, L2 and neutral and ground is 8 gauge. The finer the wire strands are the more expensive the shore line is per foot. Thinner wire strands will allow tighter bends and more bending before breaking. I would think the cheapest extension would work because it is seldom used. I carry a 15 ft 50 amp and a 35 foot 30 amp with a 30 amp to 50 amp dogbone.
__________________
Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
Beau388 is offline   Reply With Quote
Old 01-03-2018, 10:41 PM   #9
gmc
Senior Member
 
gmc's Avatar
 
Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,750
THOR #2829
Angry

I carry the 'normal' 50A cord with RV to shore connections, a 30-50A adapter, and two 25 foot 30A extensions (from previous rig)...

The 30A extensions are much cheaper and easier to handle/store.

Haven't had the case yet where I needed both the extensions AND more than 30A.... But certainly could happen.
I leave water heater on propane when on 30A..
__________________
Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
gmc is offline   Reply With Quote
Old 01-03-2018, 11:05 PM   #10
Senior Member
 
TurnerFam's Avatar
 
Brand: Thor Motor Coach
Model: Palazzo 33.3 34'bunkhouse
State: Alabama
Posts: 1,788
THOR #4735
do you need this NOW for a site where your existing cord can't reach, or is this just a question about having one 'just in case'?

50a cords are heavy and expensive... stay away from carrying one unless you for sure you know you will need it - the expense will probably cause you this thought to begin with. We've traveled A LOT, for over 80,000 miles, and to Canada and Alaska, and I can't ever remember needing an additional 50a cord(my 50amp shore cord is already 30').

IF, and I say if, you really are 'concerned' you may not somehow be able to reach a 50a shore power pole, you can also purchase a 30a extension cord instead - at least you can then reach the power, but be settling for 30a instead of 100. In temperate weather, 30amps is plenty anyway. Very hot, and Very cold weather are where you really need 50a(100) when running multiple AC units, or a lot of HEAT(especially electric heaters).

You'll be fine. Don't sweat it.
__________________
the Turners
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
100,000+mi since '14 - US, Alaska, Canada.... was WC Georgia, then W NorthCarolina, now Lacey's Spring, AL : )
TurnerFam is offline   Reply With Quote
Old 01-03-2018, 11:37 PM   #11
Member
 
bruce1946's Avatar
 
Brand: Thor Motor Coach
Model: Magellan
State: Florida
Posts: 52
THOR #6001
I bought THIS 50A x 25' extension cord. I use it when we load up for every trip to hook up to my 50 A box i had installed in the garage. This cord has the same specifications as what came with our MH. Makes loading and unloading comfortable. I have only used it twice at a CG to get the MH in the best place for the view and privacy. I bought it on Amazon a little over a year ago for $77 and it is now listed at $97.
__________________
Bruce & June Hotaling, 2 Cockers, Maggie & Sadie
2009 Thor Magellan 36R 37' F53 w/5 star tune
Toad 2010 Ford Ranger W/Rampage lift for the Harley
bruce1946 is offline   Reply With Quote
Old 01-03-2018, 11:49 PM   #12
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Hurricane 29M
State: California
Posts: 189
THOR #8249
The thing about "extension" cords is that you are making the distance longer than originally designed. With Voltage, that means that the voltage at the RV has a probability of being lower than the RV expects, thus starting a whole electrical issue.

Extension cord conductors HAVE to be sized correctly, such that the voltage and current that arrives at the RV power center is within the 2-4% that most designers expect power to fluctuate.

There are a lot of good electrical heads on this forum that can get very deep into this, but the take away is try NOT to use an extension cord on top of the RV power cord, and if you have to, spend the money for the Correct conductor size cords.

Just my 2 cents,
__________________
Recie Tyson
2016 Thor Hurricane 29M
Lancaster, CA
Wrpt58 is offline   Reply With Quote
Old 01-03-2018, 11:54 PM   #13
Senior Member
 
Brand: Still Looking
Model: Fleetwood Storm 32V - pre
State: Alabama
Posts: 1,578
THOR #6826
I’d stay with 20 ft or less and go for a larger wire to avoid a voltage drop on a long run. Any longer and it will be totally too heavy and bulky. And if you can’t get any closer to a post than that maybe you should choose a different site. I think mine is 15 ft and I’ve only used it a couple of times - usually when I chose to park in a site “backwards” (which is usually frontward!) and had to route my cord just that much farther.
__________________
Pete'sMH is offline   Reply With Quote
Old 01-08-2018, 11:09 PM   #14
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport. 35M
State: New York
Posts: 279
THOR #6199
I needed an extension at home. I got a good deal on a 25 ft. They are bulky and heavy. They give you more options on where to park and how to park. A friend had to power his RV with a portable generator once and the extension placed the noisy thing farther away.
__________________
Shawn
2017 Windsport 35M
Shawn62 is offline   Reply With Quote
Old 01-09-2018, 03:18 AM   #15
Senior Member
 
Travelin' Texans's Avatar
 
Brand: Redwood
State: Texas
Posts: 923
THOR #3610
I bought this adapter in 50 amp version
Click image for larger version

Name:	85559n-adapter.jpg
Views:	71
Size:	7.1 KB
ID:	8493
to prevent cord from coming apart hanging down, cut the original cord in half with 4 prong plugs added, so had 2 - 12.5' to 15' cords, already had a 15 ' extension so now can plug in short, medium or long.
__________________
Danny & Linda
Travelin' Texans is offline   Reply With Quote
Old 01-09-2018, 12:32 PM   #16
Senior Member
 
Brand: Thor Motor Coach
Model: Four Winds 28A Class C
State: Vermont
Posts: 267
THOR #4117
Here is a link to a wire chart that I have found handy. You can see what wire size you need to have to have the desired voltage drop for the desired length of wire.

https://www.bluesea.com/resources/1437
__________________
tenbear is offline   Reply With Quote
Old 01-09-2018, 12:37 PM   #17
Senior Member
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 2,880
THOR #7035
Quote:
Originally Posted by tenbear View Post
Here is a link to a wire chart that I have found handy. You can see what wire size you need to have to have the desired voltage drop for the desired length of wire.

https://www.bluesea.com/resources/1437
The "desired" voltage drop is always zero. I think that table is for an acceptable voltage drop.
__________________
The USER Formally Known As TFryman
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
16ACE27 is offline   Reply With Quote
Old 01-09-2018, 12:48 PM   #18
Senior Member
 
Brand: Thor Motor Coach
Model: Four Winds 28A Class C
State: Vermont
Posts: 267
THOR #4117
Quote:
Originally Posted by Tfryman View Post
The "desired" voltage drop is always zero. I think that table is for an acceptable voltage drop.
I think we all know that if you are drawing any current through a wire, a zero voltage drop is impossible. The user has to decide what voltage drop is tolerable. Probably at least in part determined by how much you are willing to pay.
__________________
tenbear is offline   Reply With Quote
Old 01-09-2018, 01:58 PM   #19
Senior Member
 
Brand: Thor Motor Coach
Model: 37GT
State: Florida
Posts: 808
THOR #5246
Several years ago we were in a CG out west (can't remember where) that I needed a longer power cord. I ended up buying a 25' 50amp extension just in case it ever happen again. Over the years since then I have only needed it once or twice but when you need it you need it.
__________________
Full Time in 2017 Newmar Ventana 4369
pulling a 24' enclosed (Mini Cooper/Harley/Kayak)
(traded 2014 Thor Challenger)
US Army 70-73 Retired LEO
Joe-FL is offline   Reply With Quote
Old 01-10-2018, 02:56 PM   #20
Senior Member
 
Hooligan2's Avatar
 
Brand: Thor Motor Coach
Model: 2016 Siesta Sprinter 24ST
State: Florida
Posts: 299
THOR #2812
Quote:
Originally Posted by tenbear View Post
Here is a link to a wire chart that I have found handy. You can see what wire size you need to have to have the desired voltage drop for the desired length of wire.
https://www.bluesea.com/resources/1437
............
To figure voltage drop in an AC circuit (50 amp service) use this calculator. Voltage Drop Calculator

Practical way to check:
When using extension cords I check voltage where I plug in and at the RV to see what the drop is. I plugged into 20 amp circuit with 125 volts, 70 feet away, voltage at RV was 116 volts with nothing turned on. As you add to the load that voltage will drop. Below 108 volts can damage motors and electronics. I am comfortable with 111-112 volts, allows for surge when AC starts or Converter kicks in to charge batteries.
__________________

__________________
U.S. Coast Guard retired- 1956-1985
Pensacola, Florida
George-the Newfoundland
Lily- the Pug
1972 Moto Guzzi Eldorado
Hooligan2 is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 09:57 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2
×