Question about 30 amp vs 50 amp service

[Paleo]

So, assuming I some day get my rv back from the shop and can actually go somewhere in it, I have a question about the electrical. I've had a class C in the past with 30 amp service and it had the typical 30 amp plug. The new class A seems to have the same plug though but has 2 AC units. I was under the impression that 50 amp plugs were different, am I wrong?

[JimM68]

The difference in power is:
30 amps = 3450 watts.
50 amps = 11500 watts.

A 50 amp RV has about 4 times the power available that a 30 amp does.

There are some 30 amp systems that can run 2 A/C's, but still the power available is marginal and must be watched. You are not going to run the coffee maker, microwave, and a hair dryer at the same time, with or without any a/c's on on 30 amps...

The power management systems help a lot, but are nor miracles.

[rk911]

BB_TX wrote:
Does the plug have 3 prongs or 4 prongs. 30 amp has 3. 50 amp has 4.

And yes, 30 amp is generally not sufficient to run two ACs and the other high current devices.

unless, as in my current Itasca MH, your MH is equipped with an energy management system.

[2oldman]

no

[Jim]

Thirty amp RVs with high efficiency ACs and a smart 'load shedding' controller can run both at the same time.

Other people, like me, have just added a 20 amp plug so at RV parks with a 30 & a 20 Amp outlet on the power tower (or 50 & 30), I can plug in both ACs. Have adaptors for just about any situation.

[Big_Katuna]

My 97 holiday rambler could run two acs on 30a. It had a smart controller.

[Halmfamily]

50 Amps will have four pins (2 hot, 1 ground and 1 neutral) and 30 amp will have 3 pins with one only one hot. If your RV has 50 amp service you will need a 50-30 amp doggone.

Yes, you can run two A/C's off of 30 amp, just don't start them at the same time and have nothing else drawing power like your water heater.

[BB_TX]

Does the plug have 3 prongs or 4 prongs. 30 amp has 3. 50 amp has 4.

And yes, 30 amp is generally not sufficient to run two ACs and the other high current devices.