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.Ī quest we get asked is “What causes a surge or spike?”Įssentially when you’re at an RV park and everybody is plugged in, you have electricity running through the wires from the park pole into your Watchdog or surge protector, into your Autoformer or whatever, going into your coach. 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. 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 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. So when you hear EPO, it’s the same thing as EMS (electrical management system), which means it has an auto shutoff function.įor example, normally you would have around 120 volts coming in from the park, which is good. 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. Then we have the upper end models which have emergency power off (EPO). We have the base model model which is PWD30 for the 30-amp and PWD50 for the 50-amp. We have two models of our Power Watchdog line. One question we get asked is “What is EPO?”
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