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Old 05-25-2013, 08:50 PM   #15
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So the 30/50 difference ,amps are for how much they can handle not really amps going in? no harm done if hooked up to 50amp service using a adapter to plug into my 30 amp ? Thanks
All you need is the correct adapter to go from one plug configuration to another. You need to think of it as the RV (or anything) will only pull enough current as it needs - the source will not supply more than the load can handle, under normal circumstances. For example, your cell phone charger probably draws maybe 1 amp - when you plug it into the wall outlet in your kitchen that outlet probably has a 15A breaker on it. The breaker will NOT try to push all 15A into the cell phone charger; the charger will only pull the amps it needs.
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Old 05-29-2013, 05:59 PM   #16
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PS - The best possible for me is run my 30 amp RV on a 50 amp service (using an adapter)

1-If I plug my 30 amp RV into a 20 amp outlet (using an adapter) I can run 1 AC, the TV's and all the lights plus the various maintenance systems.

2- If I plug my 30 amp RV into a 30 amp outlet I can run 1 AC, the TV's and all the lights plus the various maintenance systems and the hot water heater.

3-If I plug my 30 amp RV into a 50 amp outlet (using an adapter) I can run 2 AC's, the TV's and all the lights plus the various maintenance systems and the hot water heater.

4-If Irun my generator I can run 2 AC's, the TV's and all the lights plus the various maintenance systems and the hot water heater.
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Old 05-29-2013, 06:06 PM   #17
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Answer to 2, 3 and 4. No
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Old 05-30-2013, 06:58 AM   #18
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Though it's called a 50amp circuit, calling it that is slightly misleading. For RVs, it is TWO 50amp leads, both at 120v. Not 240v. In other words, it's a combined 100amps! The 50amp to 30amp adaptors generally just tap into one of the individual 50amp circuits, giving a potential of 50amps on a system designed for only 30amps. So, make sure your 30amp extension cord can handle the addition power.

I wired up a 50amp outlet (four prong) at my home, with the help of a city electrical inspector (did it by the book!), so I've learned some of the dangers of not doing things right. Just be careful. Household 20amps will shock you, 50amps will KILL you!
You do not need a heavier extention cord. The coach can only draw 30 amps,there is no additional power
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Old 05-30-2013, 11:54 AM   #19
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Perhaps this less technical explanation will re-assure you: The electrical outlet doesn't PUSH any amps into your RV, it merely ALLOWS the RV to pull that max number of amps. So a 30A RV only pulls 30A, regardless of the size rating of the outlet. Your 30A RV cannot ever ask for more than 30A because its own circuit breaker, which is for 30 amps, will trip first.

If plugged to a 15 amp outlet (a standard home receptacle), the RV can ask for more amps than are available, so might trip the breaker if you don't manage your demand (load).
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Old 05-30-2013, 12:22 PM   #20
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EMS is not a must have item. You can learn energy management easily. You can do more searching on this forum and come up with very close current draws on various items. For example our microwave draws 11 amps. One AC is about 12 amps. Electric hot water heater is about 7 amps.

Now to try and help you visualize the 50 amp to 30 amp issue.

If you take a 3/4 inch garden hose (50 amp), and connect it to a 1/2 inch hose (30 amp), you can see you have more source than you can use because of the small hose.
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Old 05-30-2013, 07:09 PM   #21
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Also remember your converter, it also uses amps, lots if RV batteries are low and need charging. When on 30 amps in the summer with A/C on most of the time I would run the hot water heater on propane.
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Old 06-01-2013, 05:25 AM   #22
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Lots of great answers. I also have a portable gen. which I plan to use at the racetrack in a couple of weeks & I have a power cord that plugs into 220 service then it splits into 4 120 outlets ,is this safe to use? If so what would be the advantage as to what you could power for example I would like to run 1 air 1 refer & a light or two.
Briggs Stratton 25 ft 30 Amp Generator Adapter Power Cord Set 4 Outlets Plugs | eBay
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Old 06-01-2013, 06:42 AM   #23
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Adaptor cord - Says 20 amps for each circuit x 2 circuits. Do not try to combine the circuits together to get 1 30amp+ circuit as they are most likely on opposite phases which is different than a 30 amp single phase needed for your RV. If your genny has a full load 30amp 120vac outlet that would work better to power an RV.

Portable devices like a battery charger, outside TV, portable cooler, outside lights could be used with the portable genny otherwise you may only have 20amps of 120vac to safely power you rig.

For the types of questions you are asking you may want to seek more advice before using your portable generator to power your RV. Questions like "does your generator internally have a bonded ground to neutral" and "does it have a 30amp 120vac outlet" should be considered first.
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Old 06-02-2013, 08:21 AM   #24
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I will look into this further before proceeding with the gen, thanks
Didn't see the 20 amp outputs until now on the pics...hum.
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Old 06-03-2013, 02:37 PM   #25
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^As stated above

If you have a 30A coach and get stuck in 50A only service (which does still happen) You can use an adapter similar to one like this:
Conntek 50A M to 30A F Adapter

The same goes for if you have only 15A service ect. There is a big selection there to choose from. Just make sure you understand how these cords work first!

-nick
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Old 06-03-2013, 02:54 PM   #26
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Lots of great answers. I also have a portable gen. which I plan to use at the racetrack in a couple of weeks & I have a power cord that plugs into 220 service then it splits into 4 120 outlets ,is this safe to use? If so what would be the advantage as to what you could power for example I would like to run 1 air 1 refer & a light or two.
Briggs Stratton 25 ft 30 Amp Generator Adapter Power Cord Set 4 Outlets Plugs | eBay
To use a cord your link goes to you'll have to run a separate extension cord to each appliance. One cord could power the refrigerator (and a bit more) IF you plug refrigerator directly into the cord. Another cord could power the A/C, BUT you'd have to figure out how to get power to the A/C. If you just plug in the RV, loads will also draw off that circuit for converter and everything else in coach, overloading the circuit.

Best would be to leave that cord at home and just get an adaptor that converts the 30 amp generator outlet to an RV 30 amp plug. OR you could remove the generator outlet and wire an RV outlet in it's place.
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