Thanks everyone. NORMALLY, everything we have withstands the normal "surges" BUT, we have had a few that actually took out portable transformers. We have the transformers on ALL the refrigerators in the apartments, and a "surge" took one out, even with the transformer. Also we had a large bird land on a transformer pole and fry himself a few months ago. We had voltage regulators (and still do) on our our computers at GRI, and thank goodness we did. Both regs actually caught fire, but saved both computers!!! This is why I highly suggest the portable surge protectors.