And when you get near the end of the almost 4,000 word essay you will find this:
LOWER THAN NORMAL VOLTAGE
What is it? The most common cause of damage to electrical items in an RV. It is any sustained voltage of 104VAC or less. Common at RV gatherings as well as at campgrounds with insufficient power to sites.
(Text bolded by reviewer)
Which is why I use a hardwired Progressive-Industries EMS-HW30C
. Among it's features, it will disconnect the power to the RV if the voltage falls too far. And this has happened to me more than once, probably saving my air conditioner.
But if you also want voltage regulation (as mentioned in title
of this thread), then you are looking for some sort of uninterruptable power supply (UPS). Using a small UPS in addition to the EMS might be a good idea if you are using a computer, but otherwise I doubt there is a need for one in most small R/Vs.