Which AMP service to select

Modern RV’s have long ago outgrown the 30 amp service, just as they have outgrown the old 15 amp service years ago…

The RV industry doesn’t like change, they are still using outdated brakes from the 50’s on most trailers, and only recently started using self-adjusting brakes on a few models…

Power management is almost always necessary with a 30 Amp RV, because there are too many things we can’t control… for example we control the AC on switch but not when the compressor starts and stops, or when the water heater kicks on, or when the battery charger decides the battery needs a boost… the water heater and fridge and other DC circuits still draw power while connected to shore power… RV conveniences have passed the 30 Amp threshold a long time ago…

My AC normally draws more than 10 running amp, and the converter alone can draw from 1 -8 amps, you also should allow for a least about 8 amps for start-up draws… you are basically at your limit with only the AC turned on within the risk area of tripping the breaker most of the time… you can't schedule the loads, you can only not use them to manage your power consumption... the very few good reasons to choose 30A are due to the industries lack of providing the power needs for the installed amenities…

If you are always Boondocking, that normally requires power and water management anyway no matter which service entrance you have…

I wonder if I am the only person to order a new 5th wheel and HATE that it comes with a Marinco 50a attachment and cord. In 15 years of camping BC, Alta and Sask we have never stayed at a park with 50A service. Its just not that common in Canada like it is stateside where multiple A/C use is the norm. Now I want to buy a park power 50a to 30a marinco attachment with a 25' cord so I don't have to lug the heavy and awkward $200 cord around. The one foot long 50a threaded connector with a 30a end is $140, and then I could use my 30a extension cord to plug in. What a pain. Just wanted to throw a small wrench into the discussion.

Daryll

Finally ordered a tt, went with 50 amp, thanks all for the help!

What is the price difference? If you can bear it, go with 50 (really 100) amp.

I have 75 amp service, and its the best of all. If I need 50 amp, I have an adapter. If I need 30 amp, I use that adapter.. Works like a charm and is the amperage of the future in RVing

I would go with the 50 amp, and add the 2nd air when' I bought it.
It easier to do it when purchased and should be cheaper.
Course I am from TX. Been 100 ++++ for several days.

pianotuna wrote:
Hi Bob,

What has a converter got to do with a 50 amp service? (scratching my head).

The AC inputs would be different and the converter is usually integrated to make a single unit. That's what I was trying to say..

Hi Bob,

What has a converter got to do with a 50 amp service? (scratching my head).

If 50A is an option, that's a no-brainer. The cost as an option is going to be much less than a later conversion. Additionally, the 50A option is probably going to come with a higher capacity DC Converter. ,If you even think you may add a second AC later, then you need it for sure. With One AC, you will still find yourself doing energy management to keep from tripping breakers, especially in cold weather when you wan to run electric space heaters instead of using your propane. 100A of available power always trumps 30A any way you slice it. If my converter ever fails, I will certainly upgrade my trailer to 50A service. I wish I had it now, I just don't want to spend the $$$ to upgrade it.

electric/gas option water heaters are offered on 30amp travel trailers. My 24' Koala has 30 amp service and a gas/electric HW heater.

rockylarson wrote:
Go for the 50amp service and get the electric/gas option on the hot water heater, probably not offered with the 30amp.