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DrewE

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Joined: 08/23/2014

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Posted: 08/22/21 03:33pm Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Usually, 2 air/con units are on separate legs of the 240v, so you need to get power to both legs without creating a conflict between the 2 hots.


The standard 30A to 50A plug adapters will do just that.

I'm not sure what you mean by "creating a conflict between the two hots"; on most RVs, they are pretty practically independent of each other, only sharing the same neutral return (and, of course, safety ground). If you have any 240V circuits--which are not too commonly found in RVs--then they just won't have power when connected to the 120V supply since both legs are at the same potential all the time.





Bobbo

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Posted: 08/22/21 09:29pm Link  |  Quote  |  Print  |  Notify Moderator

DrewE wrote:

valhalla360 wrote:

Usually, 2 air/con units are on separate legs of the 240v, so you need to get power to both legs without creating a conflict between the 2 hots.


The standard 30A to 50A plug adapters will do just that.

I'm not sure what you mean by "creating a conflict between the two hots"; on most RVs, they are pretty practically independent of each other, only sharing the same neutral return (and, of course, safety ground). If you have any 240V circuits--which are not too commonly found in RVs--then they just won't have power when connected to the 120V supply since both legs are at the same potential all the time.

What he means is that the 2 air conditioners are on separate legs of the 50 amp system. Or should be. A 30 to 50 dog bone adapter puts them on the same (30 amp) leg. That is "creating a conflict between the two hots" since both A/C units may try to start up at the same time.


Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB


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