Hi Brian,
The ISB is an autoformer. I want to buy one but can't find a place to do so in Canada or USA.
briansue wrote:
An autoformer may be a better choice especially since they are easily available at Home Depot in Mexico.
I do realize that most people may not be able to acquire an ISB regulator or justify the cost. But this is what works for us. I do not know what an autoformer is. The ISB device can be ordered at any ferreteria and some even have them in stock. I know many homeowners and businesses have them as well as many RVers. They work. I would have to know more about what an autoformer is but I do not so cannot comment. I have had the ISB regulator for quite a few years and do know it works. Works for us. Works for many others.