![]() 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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