2oldman wrote:
Voltage sag is way more common.
I guess it's like insurance, rarely needed but a disaster if you don't. And its use would be directly proportional to the amount of time you spend in RV parks.
X2
The problem is that without surge, high/low voltage protection you will probably never be aware of the damage that is being done. When your AC runs on low voltage (as in late afternoon and everyone in the park cranks their AC up resulting in a serious drop in voltage throughout the park), you are shortening its life dramatically. The same holds true for most other AC appliances.
When your AC compressor needs replacement after just a few years you can assume it was subjected to substandard electricity that took its toll. A good (I like Progressive Industries), combination surge protection/EMS will prevent this damage.
:C