Running 2 AC units on 30 amp
Hello We are picking up our new 2018 Miramar 35.3 tomorrow! We are very excited as we have been waiting since mid February when we ordered it. We are coming from a 29' travel trailer so this will ...
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I don't suppose maybe the rear mounted air conditioner has its own 120VAC PLug accessible... If so you could use an extension cord running to the camp ground pedestal and plug it into their 20AMP Service plug. This will draw from a different 120VAC zone and not draw from your 30AMP connection zone.
Using the 30AMP zone for both air conditioners is really going to power down your service. It may even get down to just having your converter/charger ON and both air conditioners. The real necessity for me would be to have lights and HDTV and a couple of fans - Maybe the fridge but that can be solved with a 5-day ice chest hehe... Run everything off of PROPANE that you can (Including the Hot water heater)... It still will want to see some 12VDC power for control boards that will be provided by the converter/charger and/or the battery don't let the battery get below 12.0VDC etc... Your battery should be charging when on shore power as long as the converter/charger in ON...
You also should consider that each of your two air conditioners are wired to your separate 50A 120VAC zones. You will have to make sure your RV30A to 50A long DOGBONE adapter will power up both of your 50AMP zones in your trailer.
Sort of like this diagram shows...
Note the RV30A to 50A long adapter has the two HOT zones wired together in the adapter like shown here... Some of these adapters may only be wired to one of your 50A zones... Something to check on...
DMBRUSS.com images
When plugged into the 30A Service at the campground pedestal will power up both of your 50A Zones but will only have to divide both zones with 30A of power. You will want to flip a few breakers OFF in the 120VAC power Distribution Center to make sure you will not power up too many high wattage items otherwise it will trip the Campground 30A Pedestal breaker. This would really help if one of your 120VAC Air conditoners has it own 120VAC Power cord available to plug into a standard 20A Receptacle. Then you could use the Camp ground 20AMP Service with an proper size extension cord and allow more items to be powered up on both of your 50A zones being powered by only a single 30AM 120VAC shore power connection.
If you 50A trailer has the washer/Dryer setup please note this may be a true 240VAC operation just for the washer/Dryer combo and will not work at all from using the RV30A to 50A long DOGBONE type adapter. Not living in this high-end world I have no idea what would happen if you tried to run those two units from a single 120VAC zone shore power source...
I have also heard some stories about GFCI breakers tripping when using the RV30A to 50A long DOGBONE Adapter... This may have something to do with any surge protectors your 50A Trailer setup is using...
Maybe others on here that has actually done these things will dime in with more info..
Just things to know about and check on...
Roy ken
Using the 30AMP zone for both air conditioners is really going to power down your service. It may even get down to just having your converter/charger ON and both air conditioners. The real necessity for me would be to have lights and HDTV and a couple of fans - Maybe the fridge but that can be solved with a 5-day ice chest hehe... Run everything off of PROPANE that you can (Including the Hot water heater)... It still will want to see some 12VDC power for control boards that will be provided by the converter/charger and/or the battery don't let the battery get below 12.0VDC etc... Your battery should be charging when on shore power as long as the converter/charger in ON...
You also should consider that each of your two air conditioners are wired to your separate 50A 120VAC zones. You will have to make sure your RV30A to 50A long DOGBONE adapter will power up both of your 50AMP zones in your trailer.
Sort of like this diagram shows...
Note the RV30A to 50A long adapter has the two HOT zones wired together in the adapter like shown here... Some of these adapters may only be wired to one of your 50A zones... Something to check on...
DMBRUSS.com images
When plugged into the 30A Service at the campground pedestal will power up both of your 50A Zones but will only have to divide both zones with 30A of power. You will want to flip a few breakers OFF in the 120VAC power Distribution Center to make sure you will not power up too many high wattage items otherwise it will trip the Campground 30A Pedestal breaker. This would really help if one of your 120VAC Air conditoners has it own 120VAC Power cord available to plug into a standard 20A Receptacle. Then you could use the Camp ground 20AMP Service with an proper size extension cord and allow more items to be powered up on both of your 50A zones being powered by only a single 30AM 120VAC shore power connection.
If you 50A trailer has the washer/Dryer setup please note this may be a true 240VAC operation just for the washer/Dryer combo and will not work at all from using the RV30A to 50A long DOGBONE type adapter. Not living in this high-end world I have no idea what would happen if you tried to run those two units from a single 120VAC zone shore power source...
I have also heard some stories about GFCI breakers tripping when using the RV30A to 50A long DOGBONE Adapter... This may have something to do with any surge protectors your 50A Trailer setup is using...
Maybe others on here that has actually done these things will dime in with more info..
Just things to know about and check on...
Roy ken
