Forum Discussion
CA_Traveler
Sep 03, 2019Explorer III
Rover Bill,
Good post. For me the main purpose of my PI HW50C EMS is protection from open ground, reverse polarity, high and low voltage and a surge.
My 2004 PI HW50C used 4-5 months/year has never displayed the Replace Surge error so don't know if I've gotten any surges. I never expect to get the Line Frequency error since utilities are so precise. If any of the above conditions are detected when plugged in power is disconnected and ditto if they occur later. And I've had all of the above faults.
Potentially the worst and most destructive occurred on 2005 when 160V was detected on a 30A pedestal at 10:00 PM. Power was shut down by the HW50C and I could not get unplugged fast enough. I knew the problem was due to a open neutral - something to think about and there are no typos in this paragraph.
Good post. For me the main purpose of my PI HW50C EMS is protection from open ground, reverse polarity, high and low voltage and a surge.
My 2004 PI HW50C used 4-5 months/year has never displayed the Replace Surge error so don't know if I've gotten any surges. I never expect to get the Line Frequency error since utilities are so precise. If any of the above conditions are detected when plugged in power is disconnected and ditto if they occur later. And I've had all of the above faults.
Potentially the worst and most destructive occurred on 2005 when 160V was detected on a 30A pedestal at 10:00 PM. Power was shut down by the HW50C and I could not get unplugged fast enough. I knew the problem was due to a open neutral - something to think about and there are no typos in this paragraph.
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