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Old 09-25-2021, 12:18 PM   #1
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30 Amp 110v limitation

My new used 2000 Southwind was built with a 30 amp 110v service limitation. I was looking to see if anyone has information where I can purchase a drop in 50a 220v service panel. Something that will fit into the space provided. Then I can distribute the loads and run both Air conditioners and other appliances.
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Old 09-25-2021, 12:20 PM   #2
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You will need a LOT more than a "drop in breaker box" to convert from 30 to 50 amp service.


New shore power cord, new wiring from there to ATS, new ATS, new wiring from ATS to breaker box and new breaker box.
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Old 09-25-2021, 12:32 PM   #3
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I’m aware of that. Need that to start planning the project and design the upgrade. I’m an electrical engineer.
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Old 09-25-2021, 12:46 PM   #4
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30A 120VAC panel.....check brand/model of that Power Center and then look up 50A 240V RV AC Power Panel

https://www.progressivedyn.com/rv/po...s/4500-series/

https://www.bestconverter.com/Distri...nels_c_52.html


50A 4 wire power cord (25' minimum).....#6 ga wire from cord termination to 50A ATS, #6 wire to New 50A AC Panel, Two 50A CBs, 15/20A Individual CBs as needed for the different circuits (6-12 CBs)
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Old 09-25-2021, 01:06 PM   #5
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When we had our 1997 Fleetwood Discovery with the 30 amp system, I was able to run both roof top air conditioners and other things like lighting and entertainment etc. Best to my memory the biggest limitations were running the washing machine or microwave while running both air conditioners. But the EMS (energy management system) would automatically shed ... I believe the rear air conditioner so the other things would run.

Are you having problems getting both roof airs to run, or just when something else big needs to run?
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Old 09-25-2021, 01:21 PM   #6
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Note: It is not 50 amp. 220 volt service, but 2 50 amp. 120 volt service.
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Old 09-25-2021, 04:53 PM   #7
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Quote:
Originally Posted by ROUGHRIDER3 View Post
Note: It is not 50 amp. 220 volt service, but 2 50 amp. 120 volt service.
TY. Understood. If I run both ac units continuously it trips the 30 main after an hour.
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Old 09-25-2021, 05:26 PM   #8
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Note: It is not 50 amp. 220 volt service, but 2 50 amp. 120 volt service.
Yes it is 50 amp, 240 volt service.

2 120 volt services would need 5 wires in the power cords and plugs. 2 hots, 2 ,neutrals and a ground.

1 240 volt service uses 2 hots, one shared neutral and a ground.
Being out of phase, the neutral only carries the difference between the hots and never more then 50 amps.
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Old 09-25-2021, 05:43 PM   #9
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I would check to see just how many amps are being used. A healthy circuit breaker should be able to handle 30 amps for ever and ever. Maybe something else is coming online like a water heater element causing the breaker trip.

Curious as to which roof air conditioner you have. Mine only draw 11+- amps each.
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Old 09-25-2021, 05:48 PM   #10
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I would check to see just how many amps are being used. A healthy circuit breaker should be able to handle 30 amps for ever and ever. Maybe something else is coming online like a water heater element causing the breaker trip.

Curious as to which roof air conditioner you have. Mine only draw 11+- amps each.
No. A 30 amp breaker is typically rated to provide 24 amps continuous. It gets a little more complicated than that but suffice to say 24 amp continuous is your max. Yes it can support more than that for a period of time.

If you want both ACs on make sure your fridge and water heAter are on propane. That might get you under.

Cheers.
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Old 09-25-2021, 05:55 PM   #11
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No. A 30 amp breaker is typically rated to provide 24 amps continuous. It gets a little more complicated than that but suffice to say 24 amp continuous is your max. Yes it can support more than that for a period of time.

If you want both ACs on make sure your fridge and water heAter are on propane. That might get you under.

Cheers.
I stand corrected. Thanks
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Old 09-25-2021, 06:00 PM   #12
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Originally Posted by gkurtz View Post
My new used 2000 Southwind was built with a 30 amp 110v service limitation. I was looking to see if anyone has information where I can purchase a drop in 50a 220v service panel. Something that will fit into the space provided. Then I can distribute the loads and run both Air conditioners and other appliances.
A 50 amp Rv is still 120 volts. 220 would fry every electrical device you have. You want a panel with 2 50 amp 120 legs.
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Old 09-25-2021, 06:08 PM   #13
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A 50 amp Rv is still 120 volts. 220 would fry every electrical device you have. You want a panel with 2 50 amp 120 legs.
A little reading for your clarification
https://www.myrv.us/Imgs/PDF/50-amp%20Service.pdf
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Old 09-25-2021, 06:13 PM   #14
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Originally Posted by ROUGHRIDER3 View Post
Note: It is not 50 amp. 220 volt service, but 2 50 amp. 120 volt service.

Eh, not. It's 50 amp 120/240 split phase service. It is NOT 2 50 amp 120v services.
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