I have 30 amp service, which limits my ability to run the A/C and the microwave for example at the same time.Is it possible to add a 50 amp (by an electrician) circuit to the TT, dedicated to just the A/C? It would be in addition to my 30 amp service, so I would be plugged in to both the 30 and 50 amp receptacles on the pedestal. I think I would really only need one leg of the 50 amp circuit for the A/C, since that would be the only thing on it. Or even better, could I add a plug to the circuit so I could use a space heater in the winter, separate from the 30 amp circuit?This certainly isn't a necessity; I do just fine with the 30 amps but it would be nice to not have to worry about turning off the A/C if I want to use the microwave, or whatever.Thoughts?

Have you had issues with running the A/C and the MW at the same time? Every 30A RV I've owned never had any issues...

Hi,Many of us have added auxiliary shore power cords. I used male and female plugs which allows me to choose where my heavy loads are powered. I have the OEM 30, 20, and 15 amp shore power cords.Alternately it is possible to upgrade to 50 amps. If you do so, it is best practise to try to "balance" the load between the two legs.If the concern is low voltage (brown out) then consider adding an autoformer.

sch911 wrote:Have you had issues with running the A/C and the MW at the same time? Every 30A RV I've owned never had any issues...X2. Something's wrong with one or more of the OP's appliances.MW should be 10 amps or so.AC has a big surge to start but under 15 amps running.Yes a 30a circuit is only good for 23-26 amps continuous duty, the microwave counts as an intermittent load.

GordonThree wrote:sch911 wrote:Have you had issues with running the A/C and the MW at the same time? Every 30A RV I've owned never had any issues...X2. Something's wrong with one or more of the OP's appliances.MW should be 10 amps or so.AC has a big surge to start but under 15 amps running.Yes a 30a circuit is only good for 23-26 amps continuous duty, the microwave counts as an intermittent load.A/C drawing 15 amps running, 3 for the fridge, a few for all the things plugged in (tv, satellite box) then turning on the microwave for more than about 10 seconds, too much and the breaker blows. Was the same on my previous TT, so I don't think I have any appliance issues. This is the reason why I would like a whole separate circuit for the A/C, and the only way I could think of was to add a 50 amp circuit to the TT, but just for the A/C (and maybe a plug dedicated to something like a space heater in the winter). Trying to take some of the load off and avoid the constant pain of turning off the A/C anytime I want to use something else.

Which breaker blows? Maybe the breaker is going bad.I've never had trouble while on 30a shore power running ac and mw, while the fridge etc is on. Guess I've been lucky. My microwave has its own 15a breaker in the box. The AC has its own 20a breaker. Everything else is on another two breakers.

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25 Replies

GordonThree
Explorer
Mar 16, 2017
Which breaker blows? Maybe the breaker is going bad.

I've never had trouble while on 30a shore power running ac and mw, while the fridge etc is on. Guess I've been lucky. My microwave has its own 15a breaker in the box. The AC has its own 20a breaker. Everything else is on another two breakers.
tinstartrvlr
Explorer
Mar 16, 2017
GordonThree wrote:
sch911 wrote:
Have you had issues with running the A/C and the MW at the same time? Every 30A RV I've owned never had any issues...

X2. Something's wrong with one or more of the OP's appliances.

MW should be 10 amps or so.

AC has a big surge to start but under 15 amps running.

Yes a 30a circuit is only good for 23-26 amps continuous duty, the microwave counts as an intermittent load.

A/C drawing 15 amps running, 3 for the fridge, a few for all the things plugged in (tv, satellite box) then turning on the microwave for more than about 10 seconds, too much and the breaker blows. Was the same on my previous TT, so I don't think I have any appliance issues. This is the reason why I would like a whole separate circuit for the A/C, and the only way I could think of was to add a 50 amp circuit to the TT, but just for the A/C (and maybe a plug dedicated to something like a space heater in the winter). Trying to take some of the load off and avoid the constant pain of turning off the A/C anytime I want to use something else.
GordonThree
Explorer
Mar 16, 2017
sch911 wrote:
Have you had issues with running the A/C and the MW at the same time? Every 30A RV I've owned never had any issues...

X2. Something's wrong with one or more of the OP's appliances.

MW should be 10 amps or so.

AC has a big surge to start but under 15 amps running.

Yes a 30a circuit is only good for 23-26 amps continuous duty, the microwave counts as an intermittent load.
pianotuna
Nomad III
Mar 16, 2017
Hi,

Many of us have added auxiliary shore power cords. I used male and female plugs which allows me to choose where my heavy loads are powered. I have the OEM 30, 20, and 15 amp shore power cords.

Alternately it is possible to upgrade to 50 amps. If you do so, it is best practise to try to "balance" the load between the two legs.

If the concern is low voltage (brown out) then consider adding an autoformer.
sch911
Explorer
Mar 16, 2017
Have you had issues with running the A/C and the MW at the same time? Every 30A RV I've owned never had any issues...

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Add extra circuit

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