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Old 12-29-2013, 11:03 PM   #1
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RV is 50 amps, RV Park Spot is 30 amps

What happens if the hook-up in the RV Park is only 30 amps? My guess is that I should just try not to turn on too many electrical items. Just curious from people's experiences what is considered a normal 30 amps load? (Fridge, TV, etc.)
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Old 12-29-2013, 11:07 PM   #2
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30 amps will provide just about all you need unless you try to turn on 2 A/C units and microwave all at once. You could run 1 A/C and microwave but not all
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Old 12-30-2013, 12:12 AM   #3
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30 amps will provide just about all you need unless you try to turn on 2 A/C units and microwave all at once. You could run 1 A/C and microwave but not all
x2, what he said.
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Old 12-30-2013, 12:36 AM   #4
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So I'll be doing this this coming week when it's cold out, so I definitely won't need the AC.

Will 30 amps be sufficient to run all the appliances and multiple TVs if the AC is off?

Just trying to get a handle on how much 30 amps actually is.
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Old 12-30-2013, 12:43 AM   #5
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Barring any systems that do not operate properly you should have no problem.
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Old 12-30-2013, 12:58 AM   #6
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It would be real nice to have you fill out your Signature with your coach info in it so we can help you better.
Now that said, if you don't have a 100% electric coach, that is unless the heat is Aqua Hot and uses diesel you should be OK. If you have Heat pumps like I do and the temp is not too cold then you can still get by as long as the EMS is working correctly. I have stayed at sites with 30 amp and still ran both AC's without any problem as long as the EMS does its job. Its a little chilly now so as long as you don't have a bunch of electric heaters going on full blast. You will do just fine, maybe
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Old 12-30-2013, 01:04 AM   #7
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We have been on 30 amps a few times and made no adjustments to speak of. It was warmer then as we travel to warmer place in the winter. You made the assessment yourself correctly. You just may, and its a big may, have to cut back on an appliance or stagger the usage.
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Old 12-30-2013, 10:07 AM   #8
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Another way to look at it is that 30 amps is 30% of 50 amps. Sounds crazy, but 30 amp service is 120 volts, and 50 amp service is 240 volts. If all the park has is 30 amps, you will probably need and adapter cable (aka dogbone) to plug in your coach. You need the version with a 30 amp male and a 50 amp female.
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Old 12-30-2013, 10:31 AM   #9
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Another way to look at it is that 30 amps is 30% of 50 amps. Sounds crazy, but 30 amp service is 120 volts, and 50 amp service is 240 volts. ...
Technically correct as far as it goes, this statement is incomplete and liable to be confusing to many folks. Although the 50 amp service can supply 240V, a typical RV is configured to treat it as two separate 120V, 50A circuits for a total of 100A available to the RV.
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Old 12-30-2013, 12:17 PM   #10
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You have a Winnebago with power management so set it to 30 amps and it will shed loads for you. Just don't try to run two 1500 watt appliances at the same time. Each 1500 watts is 12.5 amps at 120 Volts AC so if you run only one high draw appliance such as a hair dryer on high, coffee pot while brewing, space heater, microwave, toaster, etc then your AC and TV should not be a problem. A occasional glance at your Powerline Center will keep you informed of whether you are too close to the limit.
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Old 12-30-2013, 01:18 PM   #11
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I'm assuming you are new to this. FYI, you will not be able to plug your 50 amp cord in without an adapter, AKA 50/30 amp dogbone.
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Old 12-30-2013, 01:41 PM   #12
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Hair dryers, Microwaves and elec. heaters are the items to watch.
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Old 12-30-2013, 02:34 PM   #13
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Originally Posted by jmraz73 View Post
What happens if the hook-up in the RV Park is only 30 amps? My guess is that I should just try not to turn on too many electrical items. Just curious from people's experiences what is considered a normal 30 amps load? (Fridge, TV, etc.)
Your guess is good.. Usually what happens is you trip the breaker a few times learning,,,,, Some folks never learn but that,,, was a joke on a TV show (one of those folks). Sadly it is not always a joke

The rules according to Readdy Killawat

BIG ticket items are in teh 1,000 watt range, these include Microwave, Water heater, Space heaters and Air conditioners. IF the bateries are low it can include the converter.

Medium. Basically the fridge,, Some old fashion CRT tvs can be medium too (500 range) but most are small.

Small, Includes TV's,. Radios, Sat receivers, do not count

20 amp service: 1 big ticket if you are lucky.. Basically stick to TV's. and the converter.

30 amp, 2 big ticket items however you may need to be careful which two, for example you usually can not carry 2 air conditioenrs.

50 amp.. All you can eat
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Old 12-30-2013, 04:30 PM   #14
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[QUOTE=mgtr;1862975]Another way to look at it is that 30 amps is 30% of 50 amps.
Sounds crazy, but 30 amp service is 120 volts, and 50 amp service is 240 volts.
If all the park has is 30 amps, you will probably need and adapter cable (aka dogbone) to plug in your coach.
You need the version with a 30 amp male and a 50 amp female.[/QUOTE


mgtr
240 volts??

Here are some often misunderstood facts regarding all properly wired RV shore power receptacles:

1.) A 30A RV receptacle will deliver up to 30A of 120VAC power to the RV, (via a single 120VAC line/leg).

2.) A 50A receptacle will deliver up to 100A of 120VAC power to the RV, (via 2 120V lines/legs)....
Not
240V and Not ONLY 50A.

For a detailed explanation go to this link: Des Moines RV

If/when a 50A RV is connected to a 30A shore power receptacle, good energy management, (aka: common sense), must be used.

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Old 01-01-2014, 09:13 PM   #15
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So I have a 50 amp 2 pole breaker feeding a 50 amp receptacle that I plug my rv into, isn't that 240 volts?
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Old 01-01-2014, 09:29 PM   #16
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So I have a 50 amp 2 pole breaker feeding a 50 amp receptacle that I plug my rv into, isn't that 240 volts?
Yes it is, but most people do not understand that 240v is made up of 2 hot legs (lines supplying power L1 & L2). The voltage between L1 & L2 is indeed 240v, but if you go from L1 to a neutral wire then you get 120v, and the same for L2 to neutral.

That said, all of the appliances in an RV use 120v, so your circuit breaker panel uses L1 to neutral for half the loads, and L2 to neutral for the other half. You never get 240v out of the panel ever. When you put a 30 amp plug adapter on your power cord, it internally connects the L1 and L2 lines together, so both sides of the panel are fed with the same 120v power. The only difference is that you no longer have the amperage to run more than one of your larger appliances (as stated earlier).
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Old 01-02-2014, 12:32 AM   #17
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Here is a fairly good write up on RV/Trailer wiring:

RV Wiring
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Old 01-02-2014, 08:32 AM   #18
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Originally Posted by cmpncrsaider View Post
So I have a 50 amp 2 pole breaker feeding a 50 amp receptacle that I plug my rv into, isn't that 240 volts?
cmpncrsaider
There is 240VAC available in a 50A shore power receptacle, (via 2 120V lines).
However, in most RVs everything operates on 120VAC.

Most "50A RVs" need/use the 2 120V lines from a 50A shore power receptacle to power only 120V items , (just like the 120V circuits in your house).

That's why, (in most RVs), everything works when connected to either a 30A "single 120V line" shore power receptacle or a "50A 2 120V line" shore power receptacle.

An exception would be if the RV has a 240V appliance, like a 240V clothes dryer, (however most RV clothes dryers operate on 120VAC).

Mel
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Old 01-03-2014, 10:05 AM   #19
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Thanks for that Mel, that's the reason I inquire, the wife and I do not like the splendid W/D and want to put separate washer and dryer stack unit. So we will only be able to use it at campgrounds with 240 volt 50 amp, maybe some 30 amp 240 sites but would be dryer only when it's on at 30 amp site. Will have to read genset manual to see output.
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Old 01-03-2014, 02:53 PM   #20
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Thanks for that Mel, that's the reason I inquire, the wife and I do not like the splendid W/D and want to put separate washer and dryer stack unit. So we will only be able to use it at campgrounds with 240 volt 50 amp,
cmpncrsaider
You will need an appropriate double breaker and a 240V dryer receptacle wired into/added into your coach.
I don't think a 240V dryer will work from a 30A campground receptacle, since they are only 120V.
However, if the coach is properly wired, (rewired?), a 240V dryer should work from a 50A shore power receptacle, (and maybe from your genset).
I suggest consulting a licensed electrician.
Mel
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