Originally Posted by Paradise115
It is useful for spikes, outages etc. It will delay your a.c. from coming back on immediately during a surge.. ... when you think of the electronics in the rv it is money well spent. It has saved me twice so far...paid for itself already.
Progressive does what it claims to do. That is not defined in this above quoted post.
Unfortunately, many assume a surge is any anomaly. For example, a blackout is not a surge. Those are two completely different anomalies. A most important feature of a Progressive is to cut off power when voltage gets too low. Low voltage does not harm any electronics. Low voltage is potentially destructive to motorized appliances - which is what the Progressive is protecting.
Lightning is a completely different anomaly - also called a surge. If the protector is not within feet of earth ground (ie attached at the pole), then it does not claim to protect from that type of surge.
Progressive only does what it claims to do. Most common risk in campgrounds is low voltage that threatens motorized appliances.