Triker33 wrote:
A autoformer won't boost you from 110 to 120V most don't have that much boost.
If you have a surge protector with the low & high cutoff you won't be running your roof AC on lower power then it can handle.
That's my take on it also and why I think in the vast majority of cases an autoformer is a waste of $$$ since if it is really needed then IMO I would be looking for a different CG that has the proper facilities that I'm paying for. Another way I look at it is that it's there problem and why should I pay to fix their issue.
Larry