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11-01-2018, 05:45 AM
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#1
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Junior Member
Join Date: May 2018
Posts: 4
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50 Amp unit running on 30 Amp adapter
I am planning a trip to the North Rim and the camp ground only offers 30 AMP power. Is it safe to use an adapter to convert my 50 AMP plug to a 30 AMP receptacle? I have been told it is fine as long as I don't run both A/C units. I have a 2018 Silverback 29 IK and don't want to ruin anything.
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11-01-2018, 05:50 AM
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#2
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,934
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Yes, you can use the adapter. You are just going to be limited to what you can power at the same time.
EDIT: This link will help explain 50 and 30 amp connections, as well as using the adapter you are inquiring about :
https://www.rvtechmag.com/electrical/chapter3.php
__________________
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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11-01-2018, 06:06 AM
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#3
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Senior Member
Join Date: Jul 2007
Location: Jefferson County, MO
Posts: 5,452
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Yes, using a 30 amp adapter won’t cause any damage to your Silverback. I’ve been doing it for years. You just have to remember that you are limited to 30 amps and if you suddenly lose power you probably tripped the circuit breaker on the outside power pedestal. If you have a traditional water heater be sure to run it on propane to conserve electric usage.
Your Silverback has two 50 amp legs (100 amps) so using the adapter you only have 30 amps total available.
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Bob and Joyce
2013 CC Silverback 29RL
2010 Ford F250 XL Crew Cab 6.4 liter diesel
ATU Local 788
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11-01-2018, 06:52 AM
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#4
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Senior Member
Join Date: Nov 2017
Location: Dayton Ohio
Posts: 3,591
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Last summer we used 30 amp plugs often in six weeks of travel. We plugged the adapter into the pedestal and then installed the 50 amp ems. Then the fiver cable to the ems.
Our Cedar Creek 34RE is 50 amps.
You have 30% the amperage of 50 amps on 30 amps.
Study up on a chart listing usage by items.
When you first plug in the converter will draw a bunch of power for a while to charge batteries. Our ems shows ams drawn. Pay attention.
If we turn off the water heater electric, after an hour, we can run both ac units. Nothing much else. The wife has the front thermostat set 3-4 degrees higher than the rear. After the initial cool, or at night only one unit runs much.
All is peachy. We hardly notice the less power. Run the coffee maker and convection oven when only one ac unit is running. One other big items, one at a time.
On our first trip we never blew the 30 amp breakers at the pedestal.
We run or rv fridge on gas.
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11-01-2018, 07:07 AM
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#5
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Senior Member
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 7,184
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On my Cedar Creek what I do on 30amps is run the hot water on propane, that way I have a few more amps to use for other things
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11-01-2018, 07:38 AM
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#6
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,269
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This easy mod allows you to monitor the total AC amps being used so you don't trip any breakers.
https://www.ebay.com/itm/Tester-AC13...53.m2749.l2649
Get two; one for each incoming leg.
The donut goes on one 50 amp wire that attaches to the main 50 amp breaker. My panel was straight down and made wiring it with 4 conductor solid telephone cable easy.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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11-01-2018, 07:57 AM
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#7
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Senior Member
Join Date: Apr 2015
Location: Middle GA
Posts: 1,289
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Another limitation is you usually can only run a single air conditioner, if you are running anything else. When running on 30Amps, we normally just use the 15k unit (living room) and run the hot water on propane only.
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Ben and Doreen
Home Away From Home - 2017 PT Crusader 315RST
TV - 2016 Ram 3500 Laramie 4X4 6.7 Cummins Diesel
Never Enough Time Camping!!
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11-01-2018, 09:39 AM
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#8
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,269
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Quote:
Originally Posted by ben31
Another limitation is you usually can only run a single air conditioner, if you are running anything else. When running on 30Amps, we normally just use the 15k unit (living room) and run the hot water on propane only.
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If you put Micro-Air Easy Starts on both A/Cs you can run both on 30 amps easily. You will need to shut one down to run the microwave or a coffee maker though.
https://www.microair.net/collections...nt=30176048267
Don't forget to add the "FORESTRIVER" discount code! (All Caps/no space)
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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11-01-2018, 12:25 PM
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#9
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Member
Join Date: Jul 2018
Posts: 38
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Check and see
Check and see. You will likely find that the only thing connected to the other leg of the 50 amp is the bedroom AC. And you will not be able to run it because there is no power to that breaker. And maybe a washer/dryer. This is the main, if not only reason for the additional amps in most 5ers. At least in mine.
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11-01-2018, 12:27 PM
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#10
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Member
Join Date: Nov 2011
Location: Southern California
Posts: 96
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Quote:
Originally Posted by Herk7769
If you put Micro-Air Easy Starts on both A/Cs you can run both on 30 amps easily. You will need to shut one down to run the microwave or a coffee maker though.
https://www.microair.net/collections...nt=30176048267
Don't forget to add the "FORESTRIVER" discount code! (All Caps/no space)
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Tried to use discount code above for purchase and it did not work, said it was not found. ???????????????
__________________
2002 GMC Sierra 2500HD Duramax
2008 Rockwood Sig Ultra Lite 8315SS
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11-01-2018, 12:56 PM
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#11
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Moderator Emeritus
Join Date: Apr 2013
Posts: 5,173
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Quote:
Originally Posted by Oakman
..If you have a traditional water heater be sure to run it on propane to conserve electric usage...
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Quote:
Originally Posted by spock123
... is run the hot water on propane, ...
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Quote:
Originally Posted by ben31
.. and run the hot water on propane only.
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I see this recommendation all the time, but I haven't seen the need for it. The only difference between our 50A fiver and old 30A TT is the fiver has an extra outside fridge and the electric fireplace. With the 30A TT we never had to shut off the water heater and never blew the breakers. Ran AC, Microwave, WH on electric, etc, and no issue.
With the 50A, about 1/2 the spots we camped this year we adapted down to 30A, and still ran everything. The new hardwired EMS has let me keep a better eye on actual usage, and we're averaging high teens, sometimes low 20s total across both legs with normal, everyday usage.
That'll be different if I ever wire in a second AC, but for now, I never understood the recommendations to limit yourselves otherwise.
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There's no use crying over spilt milk... unless it's on your keyboard.
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11-01-2018, 02:00 PM
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#12
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Senior Member
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 7,184
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When on 30amps DW runs her hair dryer and if that don’t trip the breaker the curling iron does. When we are on 50amps nothing trips.
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11-01-2018, 02:58 PM
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#13
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Senior Member
Join Date: May 2015
Location: Central Oklahoma
Posts: 339
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Quote:
Originally Posted by 1984fireball
Check and see. You will likely find that the only thing connected to the other leg of the 50 amp is the bedroom AC. And you will not be able to run it because there is no power to that breaker. And maybe a washer/dryer. This is the main, if not only reason for the additional amps in most 5ers. At least in mine.
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This is not true. The dogbone adapters send power to both L1 and L2.
The adapter you bought is defective, return it.
Frank
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Frank & Brenda
Thor Windsport 27K TST 507 Tire Monitors
2012 Jeep Liberty Limited Jet 4X4, Hopkins TOWD light wiring, Blue Ox baseplate W/Ready Brute Hercules tow bar and Ready brakes
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11-01-2018, 03:05 PM
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#14
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,269
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Quote:
Originally Posted by Livin the Life
[/I][/B][/U][/U]
Tried to use discount code above for purchase and it did not work, said it was not found. ???????????????
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Its case sensitive. Make sure its all caps.
http://www.forestriverforums.com/for...ll-162735.html
Here is the original thread.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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11-01-2018, 03:06 PM
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#15
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,144
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Quote:
Originally Posted by FrankMor
This is not true. The dogbone adapters send power to both L1 and L2.
The adapter you bought is defective, return it.
Frank
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Frank,
We have had reports here of several dogbone adapters that only sent the current to one leg. They were not defective, that was how they were made.
I can't tell you the reasoning behind that nor do I think I'd want mine that way but that was how that particular manufacturer chose to manufacture them.
I do not recall if it was mentioned who the manufacturer was.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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11-01-2018, 03:07 PM
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#16
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Senior Member
Join Date: Jul 2007
Location: Jefferson County, MO
Posts: 5,452
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Quote:
Originally Posted by FrankMor
This is not true. The dogbone adapters send power to both L1 and L2.
The adapter you bought is defective, return it.
Frank
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This is absolutely correct.
__________________
Bob and Joyce
2013 CC Silverback 29RL
2010 Ford F250 XL Crew Cab 6.4 liter diesel
ATU Local 788
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11-01-2018, 03:10 PM
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#17
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,269
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Quote:
Originally Posted by 1984fireball
Check and see. You will likely find that the only thing connected to the other leg of the 50 amp is the bedroom AC. And you will not be able to run it because there is no power to that breaker. And maybe a washer/dryer. This is the main, if not only reason for the additional amps in most 5ers. At least in mine.
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As stated before, this is not true.
When connected to a 50 amp to 30 amp dog bone adapter, 30 amps is shared across both breakers.
The two hot wires on the 50 amp side are tied to the single hot wire on the 30 amp side. That is why you do NOT have 30 amps on each leg; but 30 amps total available shared.
If you are using 20 amps on the L1 side, there are only 10 amps left for L2 without tripping the pedestal breaker.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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11-01-2018, 03:41 PM
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#18
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Senior Member
Join Date: May 2015
Location: Central Oklahoma
Posts: 339
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Quote:
Originally Posted by 5picker
Frank,
We have had reports here of several dogbone adapters that only sent the current to one leg. They were not defective, that was how they were made.
I can't tell you the reasoning behind that nor do I think I'd want mine that way but that was how that particular manufacturer chose to manufacture them.
I do not recall if it was mentioned who the manufacturer was.
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Glad that is not the one we had with our Coachman. The only thing on L1 was the bedroom air!
Even if it is not "Defective", I would return it as not suitable for the intended purpose.
Frank
__________________
Frank & Brenda
Thor Windsport 27K TST 507 Tire Monitors
2012 Jeep Liberty Limited Jet 4X4, Hopkins TOWD light wiring, Blue Ox baseplate W/Ready Brute Hercules tow bar and Ready brakes
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11-01-2018, 03:48 PM
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#19
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,144
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Quote:
Originally Posted by FrankMor
Glad that is not the one we had with our Coachman. The only thing on L1 was the bedroom air!
Even if it is not "Defective", I would return it as not suitable for the intended purpose.
Frank
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Agreed.
My only stretch at trying to figure why they'd only hook it to one leg would be so the full 30a would go to whichever leg it was tied to. (I don't know if it was L1 or L2?) and if tied to the wrong leg for your particular unit (as in the case of your Coachman)... basically useless.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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11-01-2018, 03:56 PM
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#20
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by 1984fireball
Check and see. You will likely find that the only thing connected to the other leg of the 50 amp is the bedroom AC. And you will not be able to run it because there is no power to that breaker. And maybe a washer/dryer. This is the main, if not only reason for the additional amps in most 5ers. At least in mine.
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With a 30/50 dogbone, there is 120 volts on all breakers.
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