I haven't used it but you also asked for thoughts. If I find I need an autoformer, that one is sharing the top of my list with the Hughes because its low profile would make it easier to conceal alongside the frame. Many CGs/Resorts irrationally ban autoformers because of the mistaken belief that they steal power but this is a case of what they can't see won't hurt them. The Surge Guard's legs can be replaced with an almost flat mounting plate that would allow an even lower profile when attached to a mounting bracket hanging off the frame rail. It would also keep it out of the sight of thieves while allowing it to stay outside where ventilation is better and it is out of the way.
I bought a Hughes after our trip last summer when we experienced low voltage at numerous RV parks. I've used it a few times this fall and was happy with the results. I checked voltage in the coach before and after hooking up the autoformer and it brought the low voltage up to needed levels.
I haven't used it but you also asked for thoughts. If I find I need an autoformer, that one is sharing the top of my list with the Hughes because its low profile would make it easier to conceal alongside the frame. Many CGs/Resorts irrationally ban autoformers because of the mistaken belief that they steal power but this is a case of what they can't see won't hurt them. The Surge Guard's legs can be replaced with an almost flat mounting plate that would allow an even lower profile when attached to a mounting bracket hanging off the frame rail. It would also keep it out of the sight of thieves while allowing it to stay outside where ventilation is better and it is out of the way.
I have a 30a Superautomatic Frank's but if spending money I would get a Power Master based on reviews here.
Issues I have include:
1) 35 amp thermal breaker will always trip before either the 30amp pedestal or 30a main in the RV.
2) Superautomatic is supposed to cut power if over voltage or too low to boost. I find it can cut power when my Kipor inverter generator has no load. Also I have seen it go on/off/on/off in rapid succession in the right conditions and that can't be good for most things.
3) the first boost level seems to hang on too long and hold voltage around 127/128 when bypass would be just fine.
I think I would have preferred the Hughes RV430 but it is not longer made.
If you get Franks, skip the superautomatic. And if you have 50 amp they have two options of what they call 70amp and 100amp. Make sure you know the difference.
I installed my Hughes inside the rig for three reasons.
1: Not only is out of sight out of thief's mind, but it is harder to get past me here inside the house where I'm at than outside.
2: Campgrounds that say "NO AUTOFORMERS" will see no autoformer, Period.
3: When doing a quick overnight, draging that thing out, chaining it to the post and plugging it in at night, then reversing in the am is a LOT of work, so much so I tend to say "Forget it" With it always installed in line, not a problem. (And I really needed it too)
Nothin adds excitment like something that is none of your business
Kenwood TS-2000 housed in a 2005 Damon Intruder 377
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