Quote:
Originally Posted by Chance
The reason 30 Amp 120/240 Volt with ground could be a relatively easy future standard, which is NEMA 14-30R receptacle, is that with a simple and cheap adapter (already in production), existing 30A motorhomes could plug in — and 30A pedestal breaker would protect motorhome properly (limits to 30 Amps). Any new standard would require compatibility with existing motorhomes so campgrounds/industry could implement changes over time, and 14-30R would support that. New campground sections and motorhome manufacturers could supply 30A 240V for equivalent of 60 Amps, plenty for dual air conditioners without needing power management systems.
Unfortunately, 30A 120/240 Volt would not save enough capital investment over existing 50A standard to make it worth the trouble so I don’t see it happening; not unless it’s done for other reasons.
On the plus side, a 30A 120/240 Volt 14-30R connection could not only power existing 30A motorhomes, but with a different adapter supply up to 60 Amps to larger 50A motorhomes which could easily power their 2 air conditioners.
I can’t recall what was proposed years ago, but now that 50A is so common, it’s very doubtful there will be changes to RV electrical system unless it’s to increase power beyond 50A.
A combined 60 Amps would make a great middle ground between present 30A and 50A RV services, but probably not cost effective.
Sorry for thread thrift, but I assumed LDRider had already gotten his answer.
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Existing 30 amp camper could
not plug into a 120/240 outlet! 120 volts is 3 wire. 240 volt is 4 wire. There is only 1 hot wire in 120 volts.
You could not make an adapter that would separate the neutrals and grounds as required by code.
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