Thread Tools Display Modes
Old 07-21-2016, 09:49 PM   #1
Junior Member
Join Date: Apr 2016
Posts: 15
50 Amp TT Plugged into 30 Amp Service

Are there any issues with plugging a 50A Wildcat into a 30A pedestal? The surge suppressor is 30A and plugged into the pedestal, the 30A-50A dogbone is in between the surge suppressor and the TT's power cord.

The reason I'm asking is that we have our TT on our spot at a private campground with only 30A service, mgmt is pushing for a 50A upgrade (which I'm not opposed to) but mentions in the newsletter twice that plugging a 50A coach into 30A service will lead to early appliance/electrical failures. That just doesn't sound right, but am I missing something? I'm certainly no electrical genius, but aren't both amperage ratings single phase AC? Plus if I don't push things and not try to draw over 30A load what's the big deal?

I certainly appreciate any and all comments on this!

2016 Wildcat Maxx T28RKX
USMC/USNR Seabee (SCW/FMF) Retired
VFW Life Member
Bob55 is offline   Reply With Quote
Old 07-21-2016, 10:10 PM   #2
Senior Member
HONDAMAN174's Avatar
Join Date: Jun 2011
Location: Big brown desert
Posts: 1,989
The 30amp breaker on the pedistial will trip before it does damage to your unit

Does it have a 15/20amp plug also on pedistial?

2014 Evo 2850 "Woodstock"
2011 Toyota Tundra "Clifford"

2014 Stealth Evo 2850- "Woodstock"
2011 Toyota Tundra Rock Crawler TRD 5.7- "Clifford"
2013 Honda Accord Coupe V6 w/Track Pack- "Julia"

Just glad to get away
HONDAMAN174 is offline   Reply With Quote
Old 07-21-2016, 10:36 PM   #3
Senior Member
Blackhat6mike's Avatar
Join Date: Dec 2014
Location: St Simons Island, GA
Posts: 1,099
Send a message via Skype™ to Blackhat6mike
Just don't overload it and there will be no issues. The pedestal breaker will throw if you exceed 30amps.
2013 Silverado 2500 HD Duramax/Allison Tuned
Aviator Wright Flyer #1919
"First In, Last Out". 11B4Y
DAV, MOPH, VFW, 5/7 Cav,1/8 Cav Assoc.
11th ABN Pathfinder Co. N7MIP
Blackhat6mike is offline   Reply With Quote
Old 07-22-2016, 07:14 AM   #4
Head Rambler
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 3,309
I wouldn't try to run both A/C's at the same time, and I'd cut the one A/C off if trying to use the M/W. You could run the water heater on propane to save a few amps.

After all that, as long as you're careful about current usage, you won't have a problem.
Salem 29RKSS Pushing a 2500 Mega-Cab CTD!
Gotta go campin!
Bama Rambler is online now   Reply With Quote
Old 07-22-2016, 07:18 AM   #5
Senior Member
BandJCarm's Avatar
Join Date: Jun 2013
Location: Conway, AR
Posts: 1,715
Sounds to me like they are trying to 'convince' the 30amp guys to buy into the upgrade.

I have a 30 amp plug/connection in my driveway, had it for the previous TT. Electrician is coming next week to upgrade it to 50 amps. But as of right now, I'm plugged into the 30a receptacle. Dogbone is plugged into it directly, PI EMS is plugged to the dogbone, and the 50a trailer cord is plugged to other end of dogbone.

No problems. Just running one a/c and refrig......occasional lights.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard

FROG AR-0019-242
2016 GMC Denali 3500Dually--2017 CC 36CKTS
BandJCarm is offline   Reply With Quote
Old 07-22-2016, 07:40 AM   #6
Site Team
Flybob's Avatar
Join Date: Oct 2014
Posts: 3,207
You will be fine. The issue the management is referring to is usually caused by low voltage to things like AC compressor. With the PI EMS, you should be protected. Your only issue is forgetting you only have 30A to work with and that will be handled by the 30A breaker in the pedestal.

2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 65W solar panels
Flybob is offline   Reply With Quote
Old 07-22-2016, 07:53 AM   #7
Site Team - Lou
Herk7769's Avatar
Join Date: Oct 2009
Location: South Eastern PA
Posts: 19,834
My "take" on the topic.

Most older campgrounds with 30 amp service loops were strung with aluminum service wire whose ability to carry the full rated load decreases as temperature increases. Most 30 amp service campers will not pull 30 amps continuously as even with the AC running, the compressor does not run 24/7).

The closer to the service wire's maximum load you get, the lower the available voltage becomes as you approach the end of the service run.

Lower than rated voltage causes certain appliances (like air conditioner compressors, 110 volt AC Fans, and the microwave) to draw MORE amperage to generate the wattage needed to operate. This higher than normal current can cause the thermal breaker internal to the AC compressor, fan motors, and the magnetron in the microwave to run hot and either "open" in thermal overload and eventually "burn up" the motor due to the melting of the varnish that coats the winding wires.

While a good quality autotransformer can protect your appliances from local brown-outs, the "fix" is to upgrade the service to a wire size appropriate to the load.

More and more new campers are so loaded up with electronics and high draw appliances (like residential refrigerators) that require 50 amps of service to have enough capacity to maintain line voltage during the summer months in older campgrounds.

If you look at the ends of your 30 amp plugs, I am willing to bet that they are already showing signs of severe overheating. Perhaps not as bad as the extension cord fire, the others are very common in the situation you describe.
Attached Thumbnails
Click image for larger version

Name:	7-1-12007.jpg
Views:	65
Size:	54.3 KB
ID:	114928   Click image for larger version

Name:	7-1-12008.jpg
Views:	64
Size:	67.7 KB
ID:	114929   Click image for larger version

Name:	attachment.jpg
Views:	67
Size:	595.1 KB
ID:	114930   Click image for larger version

Name:	DSCF5741.jpg
Views:	64
Size:	197.0 KB
ID:	114932  
Attached Images

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
Herk7769 is offline   Reply With Quote
Old 07-22-2016, 08:37 PM   #8
Junior Member
Join Date: Apr 2016
Posts: 15
Thanks for the replies, much as I thought the campground is pushing a "doom and gloom" scenario. Our surge suppressor shows amperage draw (as well as a low voltage cutout) so I've written down the amperage draw for our typical combinations: fridge on electric and inside lights as a constant value, add in the microwave; add in the electric fireplace/heater (w/o microwave). So far max amps have been 14, voltage is indicated as 118/119 at all times.

I don't think I'll "sweat the load" so to speak.....
2016 Wildcat Maxx T28RKX
USMC/USNR Seabee (SCW/FMF) Retired
VFW Life Member
Bob55 is offline   Reply With Quote
Old 07-22-2016, 09:05 PM   #9
Junior Member
Join Date: Feb 2014
Location: Oklahoma
Posts: 15

Sounds like you have this ironed out. I just wanted to mention when running on 30 amp service which is 30 amp 120 volt you probably can not run both ac units if you wanted as they are most likely on two different legs. You have a 50 amp service on your TT so you have 50 amp 240 volt electric which means you have two legs of 120 and they usually separate the ac units, one on each leg. If you had a 240 volt ac and tried to run it on 30 amp 120 volts it would heat up and throw the breaker, this may be what the camp host was referring to. Enjoy

2013 Coachman Freedom Express 246RKS
2006 Chevy Suburban 2500 4x4 6.0L
tajfish is offline   Reply With Quote

50 amp, service

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

» Virginia Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 09:56 AM.