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Old 08-11-2022, 07:45 PM   #16
rames14
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Join Date: Aug 2004
Location: Livermore
Posts: 5,135
M.O.C. #1920
And this link has the features of the Hughes EPO.
https://hughesautoformers.com/power-watchdog-faqs/
One question we get asked is “What is EPO?”

We have two models of our Power Watchdog line. We have the base model model which is PWD30 for the 30-amp and PWD50 for the 50-amp. Then we have the upper end models which have emergency power off (EPO). Essentially it’s a surge protector that has a computer that analyzes the incoming power and a switch or contactor that either allows power to go into your coach or it shuts it off. So when you hear EPO, it’s the same thing as EMS (electrical management system), which means it has an auto shutoff function.

For example, normally you would have around 120 volts coming in from the park, which is good. If the volts drop below 104, then the unit sees that as too low and will cut power to your coach, sparing your coach from damaging low voltage. The Power Watchdog units with EPO will also look for reverse polarity, open ground, open neutral, high voltage, low voltage and too many amps, as well as open neutral from the coach end. If any of those faults are detected, the Power Watchdog’s face turns red, displays the error code on the faceplate, and if you have the unit paired to your phone, you will get an alert letting you know it’s detected a problem. On the app it will let you know what the error is, why it’s potentially bad, what you may be able to do and more information on that particular error.
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Ron and Terrie Ames - MOC #1920/KF0NTA
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